AXT, Inc.
US ˙ NasdaqGS ˙ US00246W1036

SecurityAXTI / AXT, Inc.
InsiderDavid C Chang
This page shows the track record and history of CHANG DAVID C insider trades in AXT, Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by David C Chang in AXTI / AXT, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AXTI / AXT, Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by David C Chang in AXTI / AXT, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2026-03-10 20,000 45.9959 20,000 45.9959 919,918 27 41.9900 -80,118 -8.71
2026-03-05 20,000 38.4238 20,000 38.4238 768,476
2026-03-04 20,000 38.5319 20,000 38.5319 770,638
2025-12-09 25,000 14.8410 25,000 14.8410 371,025
2025-12-02 25,000 12.3300 25,000 12.3300 308,250
2025-11-28 25,000 10.7200 25,000 10.7200 268,000
2025-11-05 100,000 8.9404 100,000 8.9404 894,040
2020-05-28 12,800 5.4800 12,800 5.4800 70,144
2017-08-01 9,000 8.8000 9,000 8.8000 79,200

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

AXTI / AXT, Inc. Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2026-06-05 2026-06-04 4 CHANG DAVID C AXTI Common Stock A - Award D 754 73,498
2026-03-12 2026-03-10 4 CHANG DAVID C AXTI Common Stock S - Sale D 45.9959 -20,000 -920 72,744
2026-03-05 2026-03-05 4 CHANG DAVID C AXTI Common Stock S - Sale D 38.4238 -20,000 -768 92,744
2026-03-05 2026-03-04 4 CHANG DAVID C AXTI Common Stock S - Sale D 38.5319 -20,000 -771 112,744
2025-12-10 2025-12-09 4 CHANG DAVID C DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST AXTI Common Stock S - Sale I 14.8410 -25,000 -371 132,744
2025-12-02 2025-12-02 4 CHANG DAVID C DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST AXTI Common Stock S - Sale I 12.3300 -25,000 -308 157,744
2025-12-02 2025-11-28 4 CHANG DAVID C DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST AXTI Common Stock S - Sale I 10.7200 -25,000 -268 182,744
2025-11-06 2025-11-05 4 CHANG DAVID C AXTI Common Stock S - Sale D 8.9404 -100,000 -894 207,744
2025-05-16 2025-05-15 4 CHANG DAVID C AXTI Common Stock A - Award D 55,172 307,744
2024-05-20 2024-05-16 4 CHANG DAVID C AXTI Common Stock A - Award D 23,323 252,572
2023-05-19 2023-05-18 4 CHANG DAVID C AXTI Common Stock A - Award D 23,323 229,249
2022-05-23 2022-05-19 4 CHANG DAVID C AXTI Common Stock A - Award D 15,238 205,926
2021-05-24 2021-05-20 4 CHANG DAVID C AXTI Common Stock A - Award D 6,726 190,688
2020-06-01 2020-05-28 4 CHANG DAVID C AXTI Common Stock S - Sale D 5.4800 -12,800 -70 183,962
2020-05-22 2020-05-21 4 CHANG DAVID C AXTI Common Stock A - Award D 10,909 196,762
2019-05-24 2018-05-23 4 CHANG DAVID C AXTI Common Stock A - Award D 13,452 185,853
2018-05-24 2018-05-24 4 CHANG DAVID C AXTI Common Stock A - Award D 7,594 172,401
2017-08-02 2017-08-01 4 CHANG DAVID C AXTI Common Stock S - Sale D 8.8000 -9,000 -79 164,807
2017-05-26 2017-05-27 4 CHANG DAVID C AXTI Common Stock A - Award D 8,823 173,807
2016-05-31 2016-05-26 4 CHANG DAVID C AXTI Common Stock A - Award D 16,260 164,984
2015-12-07 2015-11-02 4 CHANG DAVID C AXTI Common Stock A - Award D 13,761 148,724
2015-05-29 2015-05-27 4 CHANG DAVID C AXTI Common Stock A - Award D 11,952 134,963
2014-05-14 2014-05-13 4 CHANG DAVID C AXTI Common Stock A - Award D 13,761 123,011
2013-05-14 2013-05-14 4 CHANG DAVID C AXTI Common Stock A - Award D 10,909 109,250
2012-05-15 2012-05-15 4 CHANG DAVID C AXTI Common Stock A - Award D 7,692 98,341
P
Compra de mercado aberto ou privada de ativo não-derivativo ou derivativo
S
Venda de mercado aberto ou privada de ativo não-derivativo ou derivativo
A
Concessão, premiação, ou outra aquisição de ativos da empresa (como uma opção)
C
Conversão de derivativo
D
Venda ou transferência de ativos de volta para a empresa
F
Pagamento do preço de exercício ou responsabilidade fiscal utilizando parte dos ativos recebidos da empresa
G
Doação de ativos pelo ou para o insider
K
Swaps de capital e transações de hedge similares
M
Exercício ou conversão de ativo derivativo recebido da empresa (como uma opção)
V
Uma transação voluntariamente reportada no Formulário 4
J
Outro (acompanhado de uma nota explicativa descrevendo a transação)