ACHR / Archer Aviation Inc. - Arquivamentos da SEC, Relatório Anual, Declaração de Procuração

Archer Aviation Inc.
US ˙ NYSE ˙ US03945R1023

Estatísticas Básicas
CIK 1824502
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Archer Aviation Inc.
SEC Filings (Chronological Order)
Esta página fornece uma lista completa e cronológica de Arquivamentos da SEC, excluindo os arquivamentos de propriedade que fornecemos em outro lugar.
May 14, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

May 14, 2026 424B7

ARCHER AVIATION INC. 3,266,870 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(7)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 3,266,870 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS This prospectus supplement relates to the offer and resale from time to time of up to 3,266,870 shares of our Class A common stock, $0.0001 par value per share

May 14, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

May 14, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2026 Archer Aviation Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File

May 14, 2026 424B5

ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $8,000,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per share

May 11, 2026 EX-99.2

Archer’s Midnight aircraft during a recent flight test Archer Announces First Quarter 2026 Results, Highlighting Record FAA Certification Progress With Initial US Operations Expected In 2026 ● US operations expected to begin this year under the White

archerq126earningspressr Archer’s Midnight aircraft during a recent flight test Archer Announces First Quarter 2026 Results, Highlighting Record FAA Certification Progress With Initial US Operations Expected In 2026 ● US operations expected to begin this year under the White House’s eVTOL Integration Pilot Program (eIPP) and in preparation for LA28 Olympic Games ● Advanced commercial readiness wit

May 11, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2026 Archer Aviation Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File

May 11, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of registrant as speci

May 11, 2026 EX-99.1

UNLOCK THE SKIES Q1 2026 SHAREHOLDER LETTER | 1 Q1 2026 UNLOCK THE SKIES Q1 2026 SHAREHOLDER LETTER | 2 US operations expected to begin this year under eVTOL Integration Pilot Program (eIPP) and in preparation for LA28 Olympic Games Advanced commerci

archerlettertoshareholde UNLOCK THE SKIES Q1 2026 SHAREHOLDER LETTER | 1 Q1 2026 UNLOCK THE SKIES Q1 2026 SHAREHOLDER LETTER | 2 US operations expected to begin this year under eVTOL Integration Pilot Program (eIPP) and in preparation for LA28 Olympic Games Advanced commercial readiness with expanded piloted flight test program and operational control of Hawthorne Airport in LA Record certificatio

April 30, 2026 ARS

ARS

ADAM GOLDSTEIN Founder & Chief Executive Officer TO OUR STOCKHOLDERS: I founded Archer with a single vision: to make flying taxis an every day reality.

April 30, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Com

April 30, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 17, 2026 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 19, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2026 Archer Aviation In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission Fil

March 12, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2026 Archer Aviation Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File

March 5, 2026 424B7

ARCHER AVIATION INC. 5,325,440 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(7)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 5,325,440 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS This prospectus supplement relates to the offer and resale from time to time of up to 5,325,440 shares of our Class A common stock, $0.0001 par value per share

March 5, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

March 5, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

March 5, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2026 Archer Aviation Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File

March 5, 2026 424B5

ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $8,000,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per share

March 2, 2026 EX-10.39

EARNOUT AGREEMENT

[***] = Certain identified information has been excluded from the exhibit because it is both not material and is the type that the registrant treats as private or confidential.

March 2, 2026 EX-99.2

Archer Announces Fourth Quarter and Full Year 2025 Results, US and UAE Air Taxi Pilot Programs On-Track for 2026 ● On-track for piloted vertical take-off and landing operations as part of the White House’s eVTOL Integration Pilot Program (eIPP) and A

archerq425earningspressr Archer Announces Fourth Quarter and Full Year 2025 Results, US and UAE Air Taxi Pilot Programs On-Track for 2026 ● On-track for piloted vertical take-off and landing operations as part of the White House’s eVTOL Integration Pilot Program (eIPP) and Archer’s UAE commercial launch program.

March 2, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of regist

March 2, 2026 EX-4.1

DESCRIPTION OF THE REGISTRANT’S SECURITIES

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES The following description of capital stock of Archer Aviation Inc. (“Archer,” the “Company,” “we,” “us,” and “our”) and certain provisions of our amended and restated certificate of incorporation (the “Certificate of Incorporation”), amended and restated bylaws (the “Bylaws”), and the agreements governing the warrants described herein are summ

March 2, 2026 EX-99.1

Q4 & FY 2025 SHAREHOLDER LETTER | UNLOCK THE SKIES LETTER TO SHAREHOLDERS Q4 & FY 2025 SHAREHOLDER LETTER | UNLOCK THE SKIES 2 PILOTED VTOL OPS ON TRACK FOR EIPP & UAE WITH EXPANDED MIDNIGHT FLEET TARGETING FIRST PASSENGER FLIGHTS IN 2026 RECORD 2025

archerlettertoshareholde Q4 & FY 2025 SHAREHOLDER LETTER | UNLOCK THE SKIES LETTER TO SHAREHOLDERS Q4 & FY 2025 SHAREHOLDER LETTER | UNLOCK THE SKIES 2 PILOTED VTOL OPS ON TRACK FOR EIPP & UAE WITH EXPANDED MIDNIGHT FLEET TARGETING FIRST PASSENGER FLIGHTS IN 2026 RECORD 2025 YEAR-END LIQUIDITY OF ~$2B EXPANDED DEFENSE OPPORTUNITIES DUAL–USE HYBRID AIRCRAFT + POWERTRAIN SALES FAA MEANS OF COMPLIANCE 100% COMPLETE FIRST TO ACHIEVE THIS CERTIFICATION MILESTONE FOR AN EVTOL AIRCRAFT *Passenger-carrying operations are intended to begin with additional occupant(s) beyond a pilot.

March 2, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2026 Archer Aviation Inc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 2, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File

March 2, 2026 EX-21.1

Archer Aviation Inc. List of Material Subsidiaries Subsidiary Jurisdiction Archer Aviation Operating Corp. Delaware Archer Air LLC Delaware Hawthorne Airport Ground Lease LLC Texas

Exhibit 21.1 Archer Aviation Inc. List of Material Subsidiaries Subsidiary Jurisdiction Archer Aviation Operating Corp. Delaware Archer Air LLC Delaware Hawthorne Airport Ground Lease LLC Texas

March 2, 2026 S-8

As filed with the U.S. Securities and Exchange Commission on March 2, 2026

As filed with the U.S. Securities and Exchange Commission on March 2, 2026 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ARCHER AVIATION INC. (Exact Name of Registrant as Specified in its Charter) Delaware 85-2730902 (State or other jurisdiction of incorporation) (IRS Employer Identific

March 2, 2026 EX-FILING FEES

Table 1: Newly Registered Securities

Calculation of Filing Fee Tables S-8 Archer Aviation Inc. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Class A common stock, par value $0.0001 per share Other 37,202,288 $ 6.82 $ 253,719,604.16 0.0001381 $ 35,038.68

March 2, 2026 EX-10.21

WARRANT TO PURCHASE SHARES ARCHER AVIATION INC.

Issued: WARRANT TO PURCHASE SHARES of ARCHER AVIATION INC. THIS WARRANT TO PURCHASE SHARES (this “Agreement”) is entered into by and between ARCHER AVIATION INC, a Delaware corporation (“Company”), and (“Holder”, and together with the Company, the “Parties”). Subject to the terms and conditions set forth herein, this Agreement entitles the Holder to purchase from the Company the Shares (as defined

February 24, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2026 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission

January 26, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2026 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission F

January 22, 2026 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

January 22, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2026 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2026 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission F

January 22, 2026 424B7

ARCHER AVIATION INC. 341,984 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(7)   Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 341,984 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDERS This prospectus supplement relates to the offer and resale from time to time of up to 341,984 shares of our Class A common stock, $0.0001 par value per share (

December 10, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 8, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 8, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

December 10, 2025 EX-99.1

Archer Completes First Phase of Transactions To Acquire Control Of Hawthorne Airport Archer’s Midnight aircraft at Hawthorne Airport Hawthorne, CA - December 9, 2025 - Today, Archer Aviation (NYSE: ACHR) announced that it has now completed the first

exhibit991 Archer Completes First Phase of Transactions To Acquire Control Of Hawthorne Airport Archer’s Midnight aircraft at Hawthorne Airport Hawthorne, CA - December 9, 2025 - Today, Archer Aviation (NYSE: ACHR) announced that it has now completed the first phase of its Hawthorne Airport transactions that includes the acquisition of the master lease from the City of Hawthorne and the associated subleases, giving it control of the real estate that makes up the airport.

December 10, 2025 424B7

ARCHER AVIATION INC. 1,174,453 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDER

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(7)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 1,174,453 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDER This prospectus supplement relates to the offer and resale from time to time of up to 1,174,453 shares of our Class A common stock, $0.0001 par value per share

December 10, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

December 2, 2025 EX-99.1

Archer And Karem Aircraft Announce Exclusive Collaboration To Utilize Military-Grade Rotor Technology On Archer’s Next-Generation Dual-Use VTOL Aircraft ● Integral to Archer’s strategic partnership with Anduril is the goal of delivering an autonomous

exhibit991 Archer And Karem Aircraft Announce Exclusive Collaboration To Utilize Military-Grade Rotor Technology On Archer’s Next-Generation Dual-Use VTOL Aircraft ● Integral to Archer’s strategic partnership with Anduril is the goal of delivering an autonomous, hybrid propulsion, vertical take-off and landing aircraft that can help modernize the U.

December 2, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 2, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 2, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

November 26, 2025 424B5

ARCHER AVIATION INC. 1,517,618 SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 1,517,618 SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus 1,517,618 shares of our Class A common stock, par value $0.0001 per share (“Class A common stock”), issuable

November 26, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 24, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 24, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

November 26, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

November 21, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 18, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 18, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

November 19, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 19, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 19, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

November 19, 2025 424B7

ARCHER AVIATION INC. 1,095,321 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDER

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(7)   Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. 1,095,321 SHARES OF CLASS A COMMON STOCK OFFERED BY THE SELLING STOCKHOLDER This prospectus supplement relates to the offer and resale from time to time of up to 1,095,321 shares of our Class A common stock, $0.0001 par value per shar

November 19, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

November 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 5, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 5, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

November 12, 2025 EX-1.1

[***] = Certain identified information has been excluded from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. Certain schedules, exhibits and similar attachments to this exhibit, have

exhibit11 [***] = Certain identified information has been excluded from the exhibit because it is both not material and is the type that the registrant treats as private or confidential.

November 12, 2025 EX-1.2

[***] = Certain identified information has been excluded from the exhibit because it is both not material and is the type that the registrant treats as private or confidential. Certain schedules, exhibits and similar attachments to this exhibit, have

exhibit12 [***] = Certain identified information has been excluded from the exhibit because it is both not material and is the type that the registrant treats as private or confidential.

November 7, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

November 7, 2025 424B5

81,250,000 Shares of Class A Common Stock

TABLE OF CONTENTS  As filed pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (to Prospectus dated February 11, 2025) 81,250,000 Shares of Class A Common Stock We are offering 81,250,000 shares of our Class A common stock, par value $0.0001 per share (the “Class A common stock”), pursuant to this prospectus supplement and the accompanying base prospectus. Our Class A co

November 7, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

November 7, 2025 424B5

ARCHER AVIATION INC. UP TO $27,641,113.80 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)   Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $27,641,113.80 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $27,641,113.80 of shares (the “Shares”) of our Class A common stock, par value $0.0001

November 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name

November 6, 2025 EX-10.1

Execution SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is entered into as of November 6, 2025, by and among Archer Aviation Inc., a Delaware corporation (the “Company”), and each purchaser identified on the sign

exhibit101spa Execution SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is entered into as of November 6, 2025, by and among Archer Aviation Inc.

November 6, 2025 EX-99.2

Archer To Acquire Los Angeles Airport As Strategic Air Taxi Network Hub and AI Testbed Archer Announces Third Quarter Results, Highlighting Additional $650M in Fundraising, Recent Record Flight Test Milestones, Closing of Lilium Patent Portfolio Acqu

exhibit992earningsreleas Archer To Acquire Los Angeles Airport As Strategic Air Taxi Network Hub and AI Testbed Archer Announces Third Quarter Results, Highlighting Additional $650M in Fundraising, Recent Record Flight Test Milestones, Closing of Lilium Patent Portfolio Acquisition & Continued Strong Global Demand Image depicts Archer’s development plans for Hawthorne Airport.

November 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 6, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 6, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

November 6, 2025 EX-99.1

SHAREHOLDER LETTER // HAWTHORNE AIRPORT, LOS ANGELES, CA Financial Position Reinforced Our Sector-Leading Balance Sheet Raised $650M of new equity capital, reinforcing our sector-leading balance sheet taking our total liquidity to now over $2B. Quart

exhibit991shareholderlet SHAREHOLDER LETTER // HAWTHORNE AIRPORT, LOS ANGELES, CA Financial Position Reinforced Our Sector-Leading Balance Sheet Raised $650M of new equity capital, reinforcing our sector-leading balance sheet taking our total liquidity to now over $2B.

October 22, 2025 424B5

ARCHER AVIATION INC. WARRANTS TO PURCHASE UP TO $5,000,000 SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)   Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. WARRANTS TO PURCHASE UP TO $5,000,000 SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus warrants to purchase up to $5,000,000 shares of Class A common stock, with an

October 22, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

October 17, 2025 EX-99.1

Archer Wins Competitive Bid Process To Acquire Lilium's Patent Portfolio ● Lilium was founded in 2015 and spent over $1.5B developing advanced technologies related to electric vertical takeoff and landing (eVTOL) aircraft ● The Lilium patent portfoli

exhibit991 Archer Wins Competitive Bid Process To Acquire Lilium's Patent Portfolio ● Lilium was founded in 2015 and spent over $1.

October 17, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: October 15, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: October 15, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

August 11, 2025 EX-4.1

Form of Warrant to Purchase Shares

exhibit41formofwarrant Issued: FORM OF WARRANT TO PURCHASE SHARES of ARCHER AVIATION INC.

August 11, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of re

August 11, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initia

August 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identific

August 11, 2025 EX-99.1

SHAREHOLDER LETTER // SHAREHOLDER LETTER Q1 2025 Financial Position Sector-Leading Cash Position Surpasses $1.7B Our Q2’25 $850M capital raise further strengthened our balance sheet supporting our simultaneous execution across both our commercial and

exhibit991shareholderlet SHAREHOLDER LETTER // SHAREHOLDER LETTER Q1 2025 Financial Position Sector-Leading Cash Position Surpasses $1.

August 11, 2025 EX-10.2

Transition Letter Agreement, dated July 8, 2025 by and between Mark Mesler and the Company

exhibit102transitionagre July 8, 2025 VIA E-MAIL Mark Mesler Re: Terms of Transition Dear Mark: This letter confirms the agreement (“Agreement”) between you and Archer Aviation Inc.

August 11, 2025 EX-99.2

Archer Announces Second Quarter Results, Highlighting Manufacturing Ramp Of Midnight Aircraft Ahead Of Early Commercial Deployments ● Six Midnight aircraft in production, three of which are in final assembly at our facilities ● Selected as the Offici

exhibit992earningsreleas Archer Announces Second Quarter Results, Highlighting Manufacturing Ramp Of Midnight Aircraft Ahead Of Early Commercial Deployments ● Six Midnight aircraft in production, three of which are in final assembly at our facilities ● Selected as the Official Air Taxi Provider of the LA28 Olympic Games ● Commenced UAE Launch Edition program with Abu Dhabi Aviation and the Abu Dhabi Investment Office ● Accelerated defense program with two strategic acquisitions ● Sector leading balance sheet with over $1.

August 11, 2025 424B5

ARCHER AVIATION INC. UP TO $51,493,000 OF SHARES OF CLASS A COMMON STOCK WARRANTS TO PURCHASE 314,760 SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)   Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $51,493,000 OF SHARES OF CLASS A COMMON STOCK WARRANTS TO PURCHASE 314,760 SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus (i) up to $51,493,000 of shares (th

July 25, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 21, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 21, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

July 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 7, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 7, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificati

July 1, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 27, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 27, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

June 13, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

June 13, 2025 EX-10.1

Securities Purchase Agreement, dated as of June 12, 2025, by and among Archer Aviation Inc. and the purchasers identified on the signature pages thereto

Exhibit 10.1 Execution SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is entered into as of June 12, 2025, by and among Archer Aviation Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, an “Investor” and collectively the “Investors”). WHEREAS, subject to the ter

June 13, 2025 424B5

85,000,000 Shares of Class A Common Stock

TABLE OF CONTENTS  As filed pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (to Prospectus dated February 11, 2025) 85,000,000 Shares of Class A Common Stock We are offering 85,000,000 shares of our Class A common stock, par value $0.0001 per share (the “Class A common stock”), pursuant to this prospectus supplement and the accompanying base prospectus. Our Class A co

June 13, 2025 EX-99.1

Archer Raises $850M Following White House Executive Order To Accelerate U.S. eVTOL Rollout, Cementing Its Industry-Leading Liquidity Position Of Approximately $2B Archer’s Midnight aircraft at its facility in California

Exhibit 99.1 Archer Raises $850M Following White House Executive Order To Accelerate U.S. eVTOL Rollout, Cementing Its Industry-Leading Liquidity Position Of Approximately $2B Archer’s Midnight aircraft at its facility in California SANTA CLARA, CA, June 12, 2025—Today Archer Aviation Inc. (NYSE: ACHR) raised an additional $850M following the White House’s announcement last week of an Executive Or

June 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 12, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 12, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

May 15, 2025 EX-99.1

Archer Selected as the Official Air Taxi Provider of the LA28 Olympic and Paralympic Games and Team USA in Exclusive Deal Archer’s Midnight eVTOL Aircraft Will Seek to Integrate Across the LA28 Games through Transporting VIPs, Fans, & Stakeholders, W

Archer Selected as the Official Air Taxi Provider of the LA28 Olympic and Paralympic Games and Team USA in Exclusive Deal Archer’s Midnight eVTOL Aircraft Will Seek to Integrate Across the LA28 Games through Transporting VIPs, Fans, & Stakeholders, While Electrifying Vertiport Take-off-and- Landing Hubs for Key Venues Los Angeles, CA (May 15, 2025) — Today, Archer (NYSE: ACHR) announced that it has been selected as the Official Air Taxi Provider of the LA28 Olympic and Paralympic Games and Team USA.

May 15, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: May 15, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: May 15, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificati

May 12, 2025 EX-99.1

SHAREHOLDER LETTER // SHAREHOLDER LETTER Q1 2025 Strong Financial Position Total Cash Position Surpasses $1B, Leading the Industry. Our Q1’25 capital raise further strengthened our balance sheet helping enable us to execute on early commercial deploy

archershareholderletter- SHAREHOLDER LETTER // SHAREHOLDER LETTER Q1 2025 Strong Financial Position Total Cash Position Surpasses $1B, Leading the Industry.

May 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of r

May 12, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

May 12, 2025 EX-99.2

Archer Announces First Quarter Results, Highlighting On-Track UAE Launch & New “Launch Edition” Customers ● UAE Launch remains on track for later this year with plans to deliver a piloted Midnight aircraft to the UAE this summer ● The Midnight “Launc

archerq125earningspressr Archer Announces First Quarter Results, Highlighting On-Track UAE Launch & New “Launch Edition” Customers ● UAE Launch remains on track for later this year with plans to deliver a piloted Midnight aircraft to the UAE this summer ● The Midnight “Launch Edition” program rolls out with its first two customers: Abu Dhabi Aviation and Ethiopian Airlines ● Partnering with Palantir to build artificial intelligence for the future of next-gen aviation technologies ● Total cash position surpasses $1B, leading the industry with Q1'25 spending landed within its guided range Recent photo from Archer’s flight test facility in California SANTA CLARA, CA, May 12, 2025 - Archer Aviation Inc.

May 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: May 12, 2025 Archer Aviation Inc. (Exact Name of Registrant as Spec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: May 12, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificati

May 12, 2025 424B5

ARCHER AVIATION INC. UP TO $19,250,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $19,250,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $19,250,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per sha

April 30, 2025 ARS

ARS

ARCHER AVIATION INC 2025 Proxy Statement & 2024 Annual Report ADAM GOLDSTEIN Founder & Chief Executive Officer TO OUR STOCKHOLDERS: You are cordially invited to attend the 2025 Annual Meeting of Stockholders (the “Annual Meeting”) of Archer Aviation Inc.

April 30, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 30, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 18, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 3, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: March 31, 2025 Archer Aviation Inc. (Exact Name of Registrant as Sp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: March 31, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifica

February 28, 2025 S-8

As filed with the U.S. Securities and Exchange Commission on February 28, 2025

As filed with the U.S. Securities and Exchange Commission on February 28, 2025 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ARCHER AVIATION INC. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 85-2730902 (I.

February 28, 2025 EX-21.1

List of Subsidiaries

Exhibit 21.1 Archer Aviation Inc. List of Material Subsidiaries Subsidiary Jurisdiction Archer Aviation Operating Corp. Delaware Archer Air LLC Delaware

February 28, 2025 EX-19.1

Policy Against Insid

INSIDER TRADING POLICY APPROVED BY THE BOARD ON SEPTEMBER 16, 2021; AMENDMENTS APPROVED BY THE BOARD ON APRIL 12, 2022, FEBRUARY 2, 2023 AND FEBRUARY 20, 2025 1 POLICY Directors, officers, employees and contractors (each, a “Covered Person,” and collectively, “Covered Persons”) of Archer Aviation Inc.

February 28, 2025 EX-4.1

Exhibit 4.1

DESCRIPTION OF THE REGISTRANT’S SECURITIES The following description of capital stock of Archer Aviation Inc.

February 28, 2025 424B5

ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)  Registration No. 333-284812 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 11, 2025) ARCHER AVIATION INC. UP TO $8,000,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $8,000,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per shar

February 28, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of regist

February 28, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

February 28, 2025 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-8 Archer Aviation Inc. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Class A Common Stock, par value $0.0001 per share Other 25,191,478 $ 7.87 $ 198,256,931.86 0.0001531 $ 30,353.14

February 27, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission

February 27, 2025 EX-99.2

Archer Announces Fourth Quarter & Full Year 2024 Results, Sets Plans For Midnight Commercial Deployments Ahead Of FAA Certification Archer Chief Pilot Jeff Greenwood With The Company’s Midnight Aircraft ● Unveiled “Launch Edition” commercialization p

ex992earningspressreleas Archer Announces Fourth Quarter & Full Year 2024 Results, Sets Plans For Midnight Commercial Deployments Ahead Of FAA Certification Archer Chief Pilot Jeff Greenwood With The Company’s Midnight Aircraft ● Unveiled “Launch Edition” commercialization program with Abu Dhabi Aviation (ADA) as its first customer, establishing a playbook to deploy Midnight commercially to dozens of early adopter markets in advance of type certification of the aircraft by the FAA ● Eyeing strong demand in the defense market and beyond for its planned hybrid aircraft that it is developing under an exclusive partnership with Anduril Industries Inc.

February 27, 2025 EX-99.1

Q4 & FY 2024 Shareholder Letter UNLOCK THE SKIES™ HIGHLIGHTS // STRONG LIQUIDITY POSITION Our total liquidity is now over $1B*. We have long maintained one of the strongest balance sheets in our industry, and the additional capital raised since the e

ex991shareholderletterq4 Q4 & FY 2024 Shareholder Letter UNLOCK THE SKIES™ HIGHLIGHTS // STRONG LIQUIDITY POSITION Our total liquidity is now over $1B*.

February 14, 2025 424B5

ARCHER AVIATION INC. UP TO $13,700,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-279289 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 16, 2024) ARCHER AVIATION INC. UP TO $13,700,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $13,700,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per share (“

February 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

February 11, 2025 EX-4.9

Form of Debt Security

Exhibit 4.9 FORM OF DEBT SECURITY [Face of Security] ARCHER AVIATION INC. [IF APPLICABLE, INSERT—FOR PURPOSES OF THE ORIGINAL ISSUE DISCOUNT PROVISIONS OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED, THE ISSUE PRICE OF THIS SECURITY IS % OF ITS PRINCIPAL AMOUNT AT STATED MATURITY SET FORTH BELOW (ITS “PRINCIPAL AMOUNT”), THE AMOUNT OF ORIGINAL ISSUE DISCOUNT IS % OF ITS PRINCIPAL AMOUNT, THE YIE

February 11, 2025 S-3ASR

As filed with the Securities and Exchange Commission on February 11, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 11, 2025 Registration No.

February 11, 2025 EX-4.10

Form of Indenture

Exhibit 4.10 ARCHER AVIATION INC. And , as Trustee INDENTURE Dated as of , TABLE OF CONTENTS ARTICLE 1 – DEFINITIONS AND INCORPORATION BY REFERENCE 1 1.1 DEFINITIONS 1 1.2. OTHER DEFINITIONS 4 1.3. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT 4 1.4. RULES OF CONSTRUCTION 4 ARTICLE 2 – THE SECURITIES 5 2.1. ISSUABLE IN SERIES 5 2.2. ESTABLISHMENT OF TERMS OF SERIES OF SECURITIES 5 2.3. EXECUTI

February 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 11, 2025 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

February 11, 2025 EX-10.1

Securities Purchase Agreement, dated as of February 11, 2025, by and among Archer Aviation Inc. and the purchasers identified on the signature pages thereto

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This SECURITIES PURCHASE AGREEMENT (this “Agreement”) is entered into as of February 11, 2025, by and among Archer Aviation Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, an “Investor” and collectively the “Investors”). WHEREAS, subject to the terms and

February 11, 2025 424B5

35,500,000 Shares of Class A Common Stock

TABLE OF CONTENTS  As filed pursuant to Rule 424(b)(5)  Registration No. 333- 284812 PROSPECTUS SUPPLEMENT (to Prospectus dated February 11, 2025) 35,500,000 Shares of Class A Common Stock We are offering 35,500,000 shares of our Class A common stock, par value $0.0001 per share (the “Class A common stock”), pursuant to this prospectus supplement and the accompanying base prospectus. Our Class A c

February 11, 2025 EX-99.1

Archer Raises $300M From Leading Institutional Investors To Accelerate Hybrid Aircraft Platform Development As Defense Opportunities Look Stronger Than Expected

Exhibit 99.1 Press Release Archer Raises $300M From Leading Institutional Investors To Accelerate Hybrid Aircraft Platform Development As Defense Opportunities Look Stronger Than Expected · Leading institutional investors participated in this financing, including funds and accounts managed by BlackRock · The additional $300M in equity capital reinforces its already strong financial position as it

February 11, 2025 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

February 11, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

February 11, 2025 EX-3.1

Amended and Restated Certificate of Incorporation of Archer, as amended

Exhibit 3.1 CERTIFICATE OF AMENDMENT OF THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF ARCHER AVIATION INC. Adopted in accordance with the provisions of Section 242 of the General Corporation Law of the State of Delaware Archer Aviation Inc. (the “Corporation”), a corporation organized and existing under the laws of the State of Delaware, by its duly authorized officer, does hereby certi

January 3, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 31, 2024 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 31, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

December 27, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 20, 2024 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 20, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

December 27, 2024 EX-3.2

Amended and Restated Bylaws

AMENDED AND RESTATED BYLAWS OF ARCHER AVIATION INC. (A DELAWARE CORPORATION) As Amended and Restated on December 26, 2024 ARTICLE I OFFICES Section 1.              Registered Office. The registered office of the corporation in the State of Delaware shall be as set forth in the Amended and Restated Certificate of Incorporation of the corporation (as the same may be amended and/or restated from time

December 27, 2024 EX-3.1

Amended and Restated Bylaws of Archer

CERTIFICATE OF AMENDMENT OF THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF ARCHER AVIATION INC.

December 13, 2024 S-3ASR

As filed with the Securities and Exchange Commission on December 13, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on December 13, 2024 Registration No.

December 13, 2024 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

December 12, 2024 EX-99.1

Archer Announces Strategic Partnership With Anduril to Develop Hybrid VTOL Military Aircraft; Raises An Additional $430M

Exhibit 99.1 Archer Announces Strategic Partnership With Anduril to Develop Hybrid VTOL Military Aircraft; Raises An Additional $430M - Anduril Industries Inc. (“Anduril”) and Archer Aviation Inc. (“Archer”) announced today that they have entered into an exclusive agreement to jointly develop a next-generation aircraft for defense applications. - The companies’ first product from this partnership

December 12, 2024 EX-10.1

Form of Subscription Agreement

  Exhibit 10.1   SUBSCRIPTION AGREEMENT   This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into as of December 11, 2024, by and between Archer Aviation Inc., a Delaware corporation (the “Company”), and the undersigned subscriber (the “Investor”).   WHEREAS, the Company and the Investor are executing and delivering this Subscription Agreement in reliance upon the exemption fro

December 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 11, 2024 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: December 11, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

December 12, 2024 EX-10.2

Form of Stellantis Subscription Agreement

Exhibit 10.2 SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into as of December 11, 2024, by and between Archer Aviation Inc., a Delaware corporation (the “Company”), and Stellantis N.V. (the “Investor”). WHEREAS, the Company and the Investor are executing and delivering this Subscription Agreement in reliance upon the exemption from securities regist

December 12, 2024 EX-99.2

2 This confidential presentation (this "Presentation") contains certain information pertaining to Archer Aviation Inc. (collectively with its subsidiaries, the "Company"). This Presentation is being provided solely to assist the recipient in determin

Exhibit 99.2 INVESTOR PRESENTATION DECEMBER 2024 CONFIDENTIAL 2 This confidential presentation (this "Presentation") contains certain information pertaining to Archer Aviation Inc. (collectively with its subsidiaries, the "Company"). This Presentation is being provided solely to assist the recipient in determining whether it wishes to proceed with conducting its own due diligence investigation of

December 12, 2024 EX-10.5

Form of Stellantis Registration Rights Agreement

Exhibit 10.5 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), is made as of December 11, 2024, by and between Archer Aviation, Inc., a Delaware corporation (the “Company”), and Stellantis N.V. (the “Investor,” and together with the Company, the “Parties”). Any term used but not defined herein will have the meaning ascribed to such term in that certain Subscripti

December 12, 2024 EX-10.3

Form of Lock-up Agreement

Exhibit 10.3 LOCK-UP AGREEMENT , 2024 Re: Archer Aviation Inc. - Private Placement of Class A Common Stock Ladies and Gentlemen: The undersigned is an owner of shares of Class A common stock, par value $0.0001 per share (the “Class A Common Stock”) and/or shares of Class B common stock, par value $0.0001 per share (the “Class B Common Stock” and, together with the Class A Common Stock, the “Common

December 12, 2024 EX-10.4

Form of Registration Rights Agreement

Exhibit 10.4 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), is made as of December 11, 2024, by and among Archer Aviation, Inc., a Delaware corporation (the “Company”), and the Investors (each an “Investor,” and collectively, the “Investors,” and together with the Company, the “Parties”) named in those certain Subscription Agreements by and among the Company a

November 18, 2024 SC 13D/A

ACHR / Archer Aviation Inc. / Goldstein Adam D - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Adam Goldstein c/o Archer Aviation Inc. 190 West Tasman Drive San Jose, CA 95134 (Name, Address and Telephone

November 14, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

November 13, 2024 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

November 13, 2024 S-3ASR

As filed with the Securities and Exchange Commission on November 13, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 13, 2024 Registration No.

November 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name

November 7, 2024 EX-99.2

Recent photo of Archer’s manufacturing facility in Covington, Georgia Archer Announces Third Quarter 2024 Results, Demonstrating Manufacturing, Certification and Commercial Launch Momentum ● Manufacturing facility set for completion in the coming wee

archerq324earningspressr Recent photo of Archer’s manufacturing facility in Covington, Georgia Archer Announces Third Quarter 2024 Results, Demonstrating Manufacturing, Certification and Commercial Launch Momentum ● Manufacturing facility set for completion in the coming weeks, focus going into 2025 is on building piloted, type-design aircraft for use in testing and early commercial deployment ● N

November 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2024 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission F

November 7, 2024 EX-99.1

Q3 2024 Shareholder Letter UNLOCK THE SKIES™ STRONG LIQUIDITY POSITION Over $500M Of Cash & Cash Equivalents. We finished the quarter with our cash position being as strong as it has been over the last 18 months Quarterly Spend On Target. Our spendin

archershareholderletter- Q3 2024 Shareholder Letter UNLOCK THE SKIES™ STRONG LIQUIDITY POSITION Over $500M Of Cash & Cash Equivalents.

November 4, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2024 Archer Aviation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission F

November 4, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

October 17, 2024 SC 13G/A

ACHR / Archer Aviation Inc. / STATE STREET CORP Passive Investment

SC 13G/A 1 ArcherAviationInc.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* ARCHER AVIATION INC (Name of Issuer) COMMON STOCK (Title of Class of Securities) 03945R102 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuan

October 15, 2024 SC 13G/A

ACHR / Archer Aviation Inc. / Lore Marc E. - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

September 17, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: September 16, 2024 Archer Aviation Inc. (Exact Name of Registrant a

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: September 16, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identi

September 17, 2024 424B5

ARCHER AVIATION INC. UP TO $5,000,000 OF SHARES OF CLASS A COMMON STOCK

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-279289 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 16, 2024) ARCHER AVIATION INC. UP TO $5,000,000 OF SHARES OF CLASS A COMMON STOCK We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $5,000,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per share (“Cl

September 9, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: September 9, 2024 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: September 9, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

August 28, 2024 424B3

Archer Aviation Inc. 49,283,582 shares of Class A Common Stock Offered by the Selling Stockholders

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration Statement No. 333-281517 PROSPECTUS Archer Aviation Inc. 49,283,582 shares of Class A Common Stock Offered by the Selling Stockholders This prospectus relates to the offer and resale from time to time of up to 49,283,582 shares of our Class A common stock, $0.0001 par value per share (the “Class A common stock”), by the selling stoc

August 26, 2024 CORRESP

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134 August 26, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, DC 20549 Attention: Erin Donahue Re: Archer Aviation Inc. Registration Statement on Form S-3 (File No. 333-281517) filed August 13, 2024 Requested Date: August 28, 2024 Requested Time: 4:00 PM

August 26, 2024 LETTER

LETTER

August 26, 2024 Adam Goldstein Chief Executive Officer Archer Aviation Inc. 190 West Tasman Drive San Jose, California 95134 Re: Archer Aviation Inc. Registration Statement on Form S-3 Filed August 13, 2024 File No. 333-281517 Dear Adam Goldstein: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests fo

August 13, 2024 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-3 Archer Aviation Inc. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date

August 13, 2024 S-3

As filed with the Securities and Exchange Commission on August 13, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on August 13, 2024 Registration No.

August 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of re

August 9, 2024 EX-4.1

Form of Warrant to Purchase Shares by and between Archer Aviation Inc. and Blue Skies Consulting & Trading Limited

exhibit41 Issued: [ ], 2024 WARRANT TO PURCHASE SHARES of ARCHER AVIATION INC. THIS CERTIFIES THAT, for value received, Blue Skies Consulting & Trading Limited, a company organized and existing under the laws of Hong Kong, or its registered assigns (the “Holder”), is entitled, subject to the terms and conditions set forth herein, to purchase from ARCHER AVIATION INC., a Delaware corporation (the “

August 8, 2024 EX-10.1

Form of Subscription Agreement, dated August 8, 2024

exhibit101 SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into as of August 8, 2024, by and between Archer Aviation Inc.

August 8, 2024 EX-99.1

Q2 2024 Shareholder Letter UNLOCK THE SKIES™ JUNE 2024 | ARCHER MIDNIGHT TRANSITION FLIGHT 2 Unveiled Planned Los Angeles Air Taxi Network Future Flight Global Planned Purchase Of Up to $580M of aircraft; Archer’s Indicative Order Book Now Nearly $6B

archershareholderletter- Q2 2024 Shareholder Letter UNLOCK THE SKIES™ JUNE 2024 | ARCHER MIDNIGHT TRANSITION FLIGHT 2 Unveiled Planned Los Angeles Air Taxi Network Future Flight Global Planned Purchase Of Up to $580M of aircraft; Archer’s Indicative Order Book Now Nearly $6B** Finalized Key Terms Of Contract Manufacturing Relationship With Stellantis Delivered First Midnight Aircraft To United Sta

August 8, 2024 EX-10.3

Form of Lock-up Agreement

exhibit103 1 LOCK-UP AGREEMENT , 2024 Re: Archer Aviation Inc. - Private Placement of Class A Common Stock Ladies and Gentlemen: The undersigned is an owner of shares of Class A common stock, par value $0.0001 per share (the “Class A Common Stock”) and/or shares of Class B common stock, par value $0.0001 per share (the “Class B Common Stock” and, together with the Class A Common Stock, the “Common

August 8, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 8, 2024 Archer Aviation Inc. (Exact Name of Registrant as Sp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 8, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifica

August 8, 2024 EX-10.5

Form of Stellantis Registration Rights Agreement, dated August 8, 2024

exhibit105 755600866.3 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), is made as of [●], 2024, by and between Archer Aviation, Inc., a Delaware corporation (the “Company”), and Stellantis N.V. (the “Investor,” and together with the Company, the “Parties”). Any term used but not defined herein will have the meaning ascribed to such term in that certain Subscrip

August 8, 2024 EX-10.4

Form of Registration Rights Agreement, dated August 8, 2024

exhibit104 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), is made as of [●], 2024, by and among Archer Aviation, Inc.

August 8, 2024 EX-10.2

Form of Stellantis Subscription Agreement, dated August 8, 2024

exhibit102 755611974.3 SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into as of August 8, 2024, by and between Archer Aviation Inc., a Delaware corporation (the “Company”), and the Stellantis N.V. (the “Investor”). WHEREAS, the Company and the Investor are executing and delivering this Subscription Agreement in reliance upon the exemption from securi

August 8, 2024 EX-99.2

Recent photo of Archer’s high-volume manufacturing facility in Covington, GA Archer Announces Key Terms Of Contract Manufacturing Relationship With Stellantis – Representing Up To ~$400M To Help Scale Midnight Production To 650 Aircraft Annually; Sec

archerq224earningspressr Recent photo of Archer’s high-volume manufacturing facility in Covington, GA Archer Announces Key Terms Of Contract Manufacturing Relationship With Stellantis – Representing Up To ~$400M To Help Scale Midnight Production To 650 Aircraft Annually; Secures $230M In Additional Equity Capital From Strategic & Institutional Investors Archer Announces Second Quarter 2024 Financial and Operating Results ● Reached agreement in principle on key terms of contract manufacturing relationship with Stellantis1.

July 5, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 21, 2024 Archer Aviation Inc. (Exact Name of Registrant as S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 21, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identific

July 5, 2024 EX-3.1

Certificate of Correction to Amended and Restated Certificate of Incorporation, as filed with the Delaware Secretary of State on July 5, 2024

certificateofxcorrectio CERTIFICATE OF CORRECTION OF AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF ARCHER AVIATION INC.

July 3, 2024 SC 13D/A

ACHR / Archer Aviation Inc. / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 8)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

July 3, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 27, 2024 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 27, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

July 2, 2024 424B5

ARCHER AVIATION INC. Up to $6,000,000 of Shares of Class A Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-279289 PROSPECTUS SUPPLEMENT (To Prospectus Dated May 16, 2024) ARCHER AVIATION INC. Up to $6,000,000 of Shares of Class A Common Stock We are offering pursuant to this prospectus supplement and the accompanying prospectus up to $6,000,000 of shares (the “Shares”) of our Class A common stock, par value $0.0001 per share (“Cl

July 2, 2024 424B8

ARCHER AVIATION INC. Warrants to Purchase 57,050 Shares of Class A Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5) and Rule 424(b)(8)  Registration No.

July 2, 2024 424B5

ARCHER AVIATION INC. Warrants to Purchase 57,050 Shares of Class A Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5) and Rule 424(b)(8)  Registration No.

June 27, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 21, 2024 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 21, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

June 27, 2024 EX-3.1

Certificate of Amendment

amendmentofxcertificate ARCHER AVIATION INC. AMENDED AND RESTATED CERTIFICATE OF INCORPORATION Archer Aviation Inc. (the “Corporation”), a corporation organized and existing under and by virtue of the Delaware General Corporation Law, hereby certifies as follows: 1. The name of the Corporation is “Archer Aviation Inc.” The date of the filing of its original Certificate of Incorporation with the Se

May 16, 2024 424B5

ARCHER AVIATION INC. Up to $70,000,000 Class A Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No.333-279289 PROSPECTUS ARCHER AVIATION INC. Up to $70,000,000 Class A Common Stock We have entered into a Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”) relating to the sale of shares of our Class A common stock, par value $0.0001 per share (“Class A common stock”), off

May 14, 2024 LETTER

LETTER

United States securities and exchange commission logo May 14, 2024 Adam Goldstein Chief Executive Officer Archer Aviation Inc.

May 14, 2024 CORRESP

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134 May 14, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, DC 20549 Attention: Sarah Sidwell Re: Archer Aviation Inc. Registration Statement on Form S-3 (File No. 333-279289) filed May 10, 2024 Requested Date: May 16, 2024 Requested Time: 4:00 PM Eastern

May 10, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation Of Filing Fee Tables Form S-3 (Form Type) Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered S

May 10, 2024 S-3

As filed with the Securities and Exchange Commission on May 9, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 9, 2024 Registration No.

May 10, 2024 EX-4.5

Form of Debt Security

Exhibit 4.5 FORM OF DEBT SECURITY [Face of Security] ARCHER AVIATION INC. [IF APPLICABLE, INSERT—FOR PURPOSES OF THE ORIGINAL ISSUE DISCOUNT PROVISIONS OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED, THE ISSUE PRICE OF THIS SECURITY IS % OF ITS PRINCIPAL AMOUNT AT STATED MATURITY SET FORTH BELOW (ITS “PRINCIPAL AMOUNT”), THE AMOUNT OF ORIGINAL ISSUE DISCOUNT IS % OF ITS PRINCIPAL AMOUNT, THE YIE

May 10, 2024 EX-4.6

Form of Indenture

Exhibit 4.6 ARCHER AVIATION INC. And , as Trustee INDENTURE Dated as of , TABLE OF CONTENTS ARTICLE 1 – DEFINITIONS AND INCORPORATION BY REFERENCE 1 1.1 DEFINITIONS 1 1.2. OTHER DEFINITIONS 4 1.3. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT 4 1.4. RULES OF CONSTRUCTION 4 ARTICLE 2 – THE SECURITIES 5 2.1. ISSUABLE IN SERIES 5 2.2. ESTABLISHMENT OF TERMS OF SERIES OF SECURITIES 5 2.3. EXECUTIO

May 9, 2024 EX-10.1

between the Company and Andy Missan

STATEMENT OF WORK THIS STATEMENT OF WORK is effective as of the date of last signature (the “Effective Date”) by and between the Archer legal entity identified in the table below (“Archer”) and supplier’s legal entity identified in the table below (the “Supplier”).

May 9, 2024 EX-99.1

Q1 2024 Shareholder Letter UNLOCK THE SKIES™ 2 Key Systems Pass Rigorous Testing Final Assembly of First Conforming Aircraft Rapidly Progressing Multi-Hundred Million Dollar Framework Agreement To Accelerate UAE Launch We are putting Midnight’s syste

Q1 2024 Shareholder Letter UNLOCK THE SKIES™ 2 Key Systems Pass Rigorous Testing Final Assembly of First Conforming Aircraft Rapidly Progressing Multi-Hundred Million Dollar Framework Agreement To Accelerate UAE Launch We are putting Midnight’s systems and components through rigorous testing as part of its safety of flight readiness for our upcoming piloted flight tests later this year and in support of our ongoing FAA certification program.

May 9, 2024 EX-99.2

Archer Announces First Quarter 2024 Results; Flight Testing Accelerates As Midnight Closes In On Transition Milestone & Midnight’s Key Systems Pass Rigorous Testing ● Midnight’s Flight Test Campaign Accelerates – Closing In On Transition Milestone. I

Archer Announces First Quarter 2024 Results; Flight Testing Accelerates As Midnight Closes In On Transition Milestone & Midnight’s Key Systems Pass Rigorous Testing ● Midnight’s Flight Test Campaign Accelerates – Closing In On Transition Milestone.

May 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of r

May 9, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: May 9, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificatio

May 9, 2024 EX-10.2

between the Company and Andy Missan

February 1, 2024 VIA E-MAIL Andy Missan Re: Terms of Transition Dear Andy: This letter confirms the agreement (“Agreement”) between you and Archer Aviation Inc.

April 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 29, 2024 ARS

ARS

ARCHERAVIATIONINC 2024ProxyStatement& 2023AnnualReportADAMGOLDSTEIN Founder&ChiefExecutiveOdž cer TOOURSTOCKHOLDERS: Youarecordiallyinvitedtoattendthe2024AnnualMeetingofStockholders(the “AnnualMeeting”)ofArcherAviationInc.

April 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 15, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 29, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: March 25, 2024 Archer Aviation Inc. (Exact Name of Registrant as Sp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: March 25, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifica

March 15, 2024 SC 13D/A

ACHR / Archer Aviation Inc. / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 7)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

March 11, 2024 SC 13G/A

ACHR / Archer Aviation Inc. / ARK Investment Management LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm248428d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 4)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 (Title of Class of Securities) 03945R102 (CUSIP Number) February 29, 2024 (Date of Event Which Requires Filing of this Statement) Check t

March 8, 2024 SC 13D/A

ACHR / Archer Aviation Inc. / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

February 29, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation Of Filing Fee Tables Form S-8 (Form Type) Archer Aviation Inc.

February 29, 2024 EX-10.36

Design-Build Agreement, dated as of October 3, 2023, by and between Archer and Evans General Contractors, LLC

Document A141® – 2014 Standard Form of Agreement Between Owner and Design-Builder 1 ADDITIONS AND DELETIONS: The author of this document has added information needed for its completion.

February 29, 2024 EX-4.1

Exhibit 4.1 to our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on February 29, 2024

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES The following description of capital stock of Archer Aviation Inc. (“Archer,” the “Company,” “we,” “us,” and “our”) and certain provisions of our amended and restated certificate of incorporation (the “Certificate of Incorporation”), amended and restated bylaws (the “Bylaws”), and the agreements governing the warrants described herein are summ

February 29, 2024 EX-10.29

Credit Agreement, dated as of October 5, 2023, by and among Archer, the subsidiary guarantors thereto, and Synovus Bank, as administrative agent and lender

Exhibit 10.29 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXLCUDED FROM THIS EXHIBIT BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE REGISTRANT IF PUBLICLY DISCLOSED. [***] INDICATES THAT INFORMATION HAS BEEN REDACTED. CREDIT AGREEMENT dated as of October 5, 2023 among ARCHER AVIATION INC., as the Borrower AND THE SUBSIDIARIES OF THE BORROWER IDENTIFIED HEREIN, as the Guarant

February 29, 2024 S-8

As filed with the U.S. Securities and Exchange Commission on February 29, 2024

As filed with the U.S. Securities and Exchange Commission on February 29, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ARCHER AVIATION INC. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 85-2730902 (I.

February 29, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of regist

February 29, 2024 EX-97.1

Clawback Policy

Archer Aviation Inc. Compensation Recovery Policy (Adopted November 1, 2023) The Board has determined that it is in the best interests of the Company and its stockholders to adopt this Policy enabling the Company to recover from specified current and former Company executives certain incentive-based compensation in the event of an accounting restatement resulting from material noncompliance with a

February 29, 2024 EX-21.1

List of Subsidiaries

Exhibit 21.1 Archer Aviation Inc. List of Subsidiaries Subsidiary Jurisdiction Archer Aviation Operating Corp. Delaware Archer Air LLC Delaware San Francisco Helicopters, LLC California Archer Aviation Brasil LTDA, a Brazil limited liability company Brazil

February 26, 2024 EX-99.1

Q4 & FY 2023 Shareholder Letter 2 THREE CONFORMING AIRCRAFT NOW UNDER CONSTRUCTION INDICATIVE ORDER BOOK IS NOW UP TO $3.5B* 80% of Midnight’s Subsystems & Components Have Low Certification Risk The vast majority of Midnight’s subsystems and componen

shareholderletter-q423fi Q4 & FY 2023 Shareholder Letter 2 THREE CONFORMING AIRCRAFT NOW UNDER CONSTRUCTION INDICATIVE ORDER BOOK IS NOW UP TO $3.

February 26, 2024 EX-99.2

Archer Announces Fourth Quarter and Full Year 2023 Results; Now In Final Phase of Midnight’s Certification Program as it Readies for Launch in 2025 ● Approximately 80% of Archer’s Midnight aircraft’s subsystems and components are sourced from leading

q423earningspressrelease Archer Announces Fourth Quarter and Full Year 2023 Results; Now In Final Phase of Midnight’s Certification Program as it Readies for Launch in 2025 ● Approximately 80% of Archer’s Midnight aircraft’s subsystems and components are sourced from leading aerospace suppliers with certification heritage giving it a significantly de-risked path to certification ● Construction of

February 26, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 26, 2024 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: February 26, 2024 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identif

January 29, 2024 SC 13G/A

ACHR / Archer Aviation Inc. / BlackRock Inc. Passive Investment

us03945r1023012924.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) Archer Aviation Inc - (Name of Issuer) Class A Common Stock - (Title of Class of Securities) 03945R102 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pu

January 29, 2024 SC 13G/A

ACHR / Archer Aviation Inc. / ARK Investment Management LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm244117d8sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 3)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 (Title of Class of Securities) 03945R102 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check t

January 24, 2024 SC 13G

ACHR / Archer Aviation Inc. / STATE STREET CORP Passive Investment

SC 13G 1 ArcherAviaInc.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 INITIAL FILING ARCHER AVIATION INC (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 03945R102 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT T

January 10, 2024 SC 13D/A

ACHR / Archer Aviation Inc. / Stellantis N.V. - SC 13D/A Activist Investment

SC 13D/A 1 sc-13da01102024stla.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherl

November 22, 2023 424B5

ARCHER AVIATION INC. Up to $70,000,000 Class A Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-275465 PROSPECTUS SUPPLEMENT (To Prospectus Dated November 22, 2023) ARCHER AVIATION INC. Up to $70,000,000 Class A Common Stock We have entered into a Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”) relating to the sale of shares of our Class A common stock, par v

November 20, 2023 CORRESP

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134

ARCHER AVIATION INC. 190 West Tasman Drive San Jose, California 95134 November 20, 2023 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, DC 20549 Attention: Eranga Dias Re: Archer Aviation Inc. Registration Statement on Form S-3 (File No. 333-275465) filed November 13, 2023 Requested Date: November 22, 2023 Requested Time: 4:

November 20, 2023 LETTER

LETTER

United States securities and exchange commission logo November 20, 2023 Adam Goldstein Chief Executive Officer Archer Aviation Inc.

November 13, 2023 EX-4.6

Form of Indenture

Exhibit 4.6 ARCHER AVIATION INC. And , as Trustee INDENTURE Dated as of , TABLE OF CONTENTS ARTICLE 1 – DEFINITIONS AND INCORPORATION BY REFERENCE 1 1.1 DEFINITIONS 1 1.2. OTHER DEFINITIONS 4 1.3. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT 4 1.4. RULES OF CONSTRUCTION 4 ARTICLE 2 – THE SECURITIES 5 2.1. ISSUABLE IN SERIES 5 2.2. ESTABLISHMENT OF TERMS OF SERIES OF SECURITIES 5 2.3. EXECUTIO

November 13, 2023 EX-4.5

Form of Debt Security

Exhibit 4.5 FORM OF DEBT SECURITY [Face of Security] ARCHER AVIATION INC. [IF APPLICABLE, INSERT—FOR PURPOSES OF THE ORIGINAL ISSUE DISCOUNT PROVISIONS OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED, THE ISSUE PRICE OF THIS SECURITY IS % OF ITS PRINCIPAL AMOUNT AT STATED MATURITY SET FORTH BELOW (ITS “PRINCIPAL AMOUNT”), THE AMOUNT OF ORIGINAL ISSUE DISCOUNT IS % OF ITS PRINCIPAL AMOUNT, THE YIE

November 13, 2023 S-3

As filed with the Securities and Exchange Commission on November 9, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 9, 2023 Registration No.

November 13, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 11)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

November 13, 2023 EX-1.2

Controlled Equity Offering

Exhibit 1.2 Archer Aviation Inc. Shares of Class A Common Stock (par value $0.0001 per share) Controlled Equity OfferingSM Sales Agreement November 9, 2023 Cantor Fitzgerald & Co. 499 Park Avenue New York, NY 10022 Ladies and Gentlemen: Archer Aviation Inc., a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with Cantor Fitzgerald & Co. (the “Agent”), as follows: 1. 

November 13, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation Of Filing Fee Tables Form S-3 (Form Type) Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered S

November 9, 2023 EX-99.1

Q3 2023 Shareholder Letter UNLOCK THE SKIES Aerial view of Midnight recently being tugged from hangar in Salinas. 2 Q3 2023 - KEY HIGHLIGHTS (1) The “up to” contract value is subject to certain conditions being met as defined in the contracts. Midnig

Q3 2023 Shareholder Letter UNLOCK THE SKIES Aerial view of Midnight recently being tugged from hangar in Salinas.

November 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name

November 9, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 9, 2023 Archer Aviation Inc. (Exact Name of Registrant as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: November 9, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

November 9, 2023 EX-99.2

Archer Announces Third Quarter 2023 Results Rapidly Advanced Commercialization Strategy and Enhanced Already Strong Financial Position As Midnight Takes Flight SANTA CLARA, CA, November 9, 2023 - Archer Aviation Inc. (“Archer” or the “Company”) (NYSE

q323earningspressrelease Archer Announces Third Quarter 2023 Results Rapidly Advanced Commercialization Strategy and Enhanced Already Strong Financial Position As Midnight Takes Flight SANTA CLARA, CA, November 9, 2023 - Archer Aviation Inc.

November 9, 2023 EX-10.1

Agreement, dated August 10, 2023

exhibit101q323 EXHIBIT 10.1 [***] = CERTAIN IDENTIFIED INFORMATION HAS BEEN REDACTED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. EXHIBITS A-D TO THIS EXHIBIT HAVE BEEN OMITTED PURSUANT TO ITEM 601(A)(5) OF REGULATION S-K. THE REGISTRANT AGREES TO FURNISH SUPPLEMENTALLY A COPY OF ANY OMITTED EXHIBIT TO THE SEC UPON REQUEST.

October 20, 2023 8-K

Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: October 16, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identifi

October 18, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

October 10, 2023 SC 13G/A

ACHR / Archer Aviation Inc - Class A / ARK Investment Management LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm2328039d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 2)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 (Title of Class of Securities) 03945R102 (CUSIP Number) September 30, 2023 (Date of Event Which Requires Filing of this Statement) Check

October 10, 2023 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: October 3, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identific

August 28, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

August 22, 2023 424B3

Archer Aviation Inc. 94,671,586 shares of Class A Common Stock Offered by the Selling Stockholders

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration Statement No. 333-273996 PROSPECTUS Archer Aviation Inc. 94,671,586 shares of Class A Common Stock Offered by the Selling Stockholders This prospectus relates to the offer and resale from time to time of up to 94,671,586 shares of our Class A common stock, $0.0001 par value per share (the “Class A common stock”), by the selling stoc

August 17, 2023 LETTER

LETTER

United States securities and exchange commission logo August 17, 2023 Adam Goldstein Chief Executive Officer and Director Archer Aviation Inc.

August 17, 2023 CORRESP

Archer Aviation Inc, 190 West Tasman Drive San Jose, California 95134

Archer Aviation Inc, 190 West Tasman Drive San Jose, California 95134 August 17, 2023 VIA EDGAR U.

August 15, 2023 S-3

As filed with the Securities and Exchange Commission on August 15, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on August 15, 2023 Registration No.

August 15, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Fee Filing Tables Form S-3 (Form Type) Archer Aviation Inc. (Exact name of Registrant as Specified in its Charter) Table 1 – Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registe

August 15, 2023 EX-4.10

Restricted Stock Purchase Agreement, dated August 10, 2023, by and between Archer and Gibson Dunn & Crutcher

Exhibit 4.10 RESTRICTED STOCK PURCHASE AGREEMENT This Restricted Stock Purchase Agreement (this “Agreement”) is made and entered into as of August 10, 2023 (the “Effective Date”) by and between Archer Aviation Inc. (the “Company”), a Delaware corporation, and Gibson, Dunn & Crutcher LLP (“Purchaser”). 1.            PURCHASE OF SHARES. On the Effective Date and subject to the terms and conditions o

August 15, 2023 EX-4.9

First Warrant to Purchase Shares, dated August 15, 2023, by and among Archer, Wisk Aero LLC and The Boeing Company

[***] = CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

August 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-39668 Archer Aviation Inc. (Exact name of re

August 10, 2023 EX-99.1

ARCHER ACCELERATES PATH TO MARKET: SECURES $215M INVESTMENT FROM STELLANTIS, BOEING, UNITED AIRLINES, ARK INVEST AND OTHERS; FAA ISSUES ARCHER CERTIFICATE TO BEGIN FLYING MIDNIGHT; ON TRACK TO COMPLETE FIRST EVER EVTOL AIRCRAFT CUSTOMER DELIVERY Arch

exhibit991 ARCHER ACCELERATES PATH TO MARKET: SECURES $215M INVESTMENT FROM STELLANTIS, BOEING, UNITED AIRLINES, ARK INVEST AND OTHERS; FAA ISSUES ARCHER CERTIFICATE TO BEGIN FLYING MIDNIGHT; ON TRACK TO COMPLETE FIRST EVER EVTOL AIRCRAFT CUSTOMER DELIVERY Archer Announces Second Quarter 2023 Financial and Operating Results ● Archer secures $215 million investment, which includes Stellantis, Boeing, United Airlines, and ARK Investment Management LLC (“ARK Invest”), increasing Archer’s total funding to date to over $1.

August 10, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 10, 2023 Archer Aviation Inc. (Exact Name of Registrant as S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: August 10, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identific

August 10, 2023 EX-99.4

C O N FI D EN TI A L C O N FI D EN TI A L Investor Presentation JULY 2023 C O N FI D EN TI A L C O N FI D EN TI A L 2 This confidential presentation (this “Presentation”) contains certain information pertaining to Archer Aviation Inc. (collectively w

julyinvestorxpresentati C O N FI D EN TI A L C O N FI D EN TI A L Investor Presentation JULY 2023 C O N FI D EN TI A L C O N FI D EN TI A L 2 This confidential presentation (this “Presentation”) contains certain information pertaining to Archer Aviation Inc.

August 10, 2023 EX-10.1

Form of Subscription Agreement

exhibit101 Exhibit 10.1 [FORM OF SUBSCRIPTION AGREEMENT] This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into as of August 10, 2023, by and between Archer Aviation Inc., a Delaware corporation (the “Company”), and the undersigned subscriber (the “Investor”). WHEREAS, the Company and the Investor are executing and delivering this Subscription Agreement in reliance upon the ex

August 10, 2023 EX-10.2

Form of Lock-up Agreement

exhibit102 Exhibit 10.2 1 [FORM OF LOCK-UP AGREEMENT] , 2023 Re: Archer Aviation Inc. - Private Placement of Class A Common Stock Ladies and Gentlemen: The undersigned is an owner of shares of Class A common stock, par value $0.0001 per share (the “Class A Common Stock”) and/or shares of Class B common stock, par value $0.0001 per share (the “Class B Common Stock” and, together with the Class A Co

August 10, 2023 EX-99.3

Wisk Aero, Archer, and Boeing Reach Agreement To Settle Litigation and Enter into Autonomous Flight Collaboration; Boeing Invests in Archer’s Latest Funding Round MOUNTAIN VIEW, CA & SANTA CLARA, CA. – (BUSINESS WIRE) – Wisk Aero (“Wisk”) and Archer

exhibit993 Wisk Aero, Archer, and Boeing Reach Agreement To Settle Litigation and Enter into Autonomous Flight Collaboration; Boeing Invests in Archer’s Latest Funding Round MOUNTAIN VIEW, CA & SANTA CLARA, CA.

August 10, 2023 EX-99.2

Q2 2023 Shareholder Letter UNLOCK THE SKIES FAA Issues Archer Certificate To Begin Flying Midnight Aircraft 2 Billy Nolen, FAA Administrator Joined Archer as Its Chief Safety Officer – In June, Billy Nolen left his role as Administrator of the FAA an

exhibit992 Q2 2023 Shareholder Letter UNLOCK THE SKIES FAA Issues Archer Certificate To Begin Flying Midnight Aircraft 2 Billy Nolen, FAA Administrator Joined Archer as Its Chief Safety Officer – In June, Billy Nolen left his role as Administrator of the FAA and joined us bringing 30+ years of experience in safety, regulatory affairs and flight operations – While at the FAA, Nolen led the agency’s efforts to enable the safe entry of eVTOL aircraft into the national airspace Secured $215M Investment from Stellantis, Boeing, United Airlines & Others – Increases Archer’s total funding to date to over $1.

August 10, 2023 EX-10.3

Registration Rights Agreement, by and between Archer and certain stockholders, dated August 10, 2023

exhibit103 Exhibit 10.3 [FORM OF REGISTRATION RIGHTS AGREEMENT] THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), is made as of [ ], 2023, by and among Archer Aviation, Inc., a Delaware corporation (the “Company”), and the Investors (each an “Investor,” and collectively, the “Investors,” and together with the Company, the “Parties”) named in those certain Subscription Agreements by and among

July 20, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

July 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 6, 2023 Archer Aviation Inc. (Exact Name of Registrant as Spec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: July 6, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificati

July 3, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

June 27, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

June 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 23, 2023 Archer Aviation Inc. (Exact Name of Registrant as Spe

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report: June 23, 2023 Archer Aviation Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-39668 85-2730902 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identificat

June 20, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

June 13, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

June 7, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

May 24, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Adcock Brett - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Steven B. Stokdyk Latham & Watkins LLP 10250 Constellation Blvd., Suite 1100 Los Angeles, CA 90067 (213) 891

May 22, 2023 SC 13D/A

ACHR / Archer Aviation Inc - Class A / Stellantis N.V. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Archer Aviation Inc. (Name of Issuer) Class A Common Stock, $0.0001 par value per share (Title of Class of Securities) 03945R 102 (CUSIP Number) Giorgio Fossati, Taurusavenue 1, 2132 LS Hoofddorp, The Netherlands, +31 23 700 1511 (Name, Address and Tel

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