Greene County Bancorp, Inc.
US ˙ NasdaqCM ˙ US3943571071

SecurityGCBC / Greene County Bancorp, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership371,003 shares
Latest Disclosed Value $ 8,247,396
Vanguard Group Inc reports 0.41% increase in ownership of GCBC / Greene County Bancorp, Inc.

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 371,003 shares of Greene County Bancorp, Inc. (US:GCBC) valued at $8,247,397 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 369,486 shares of Greene County Bancorp, Inc.. This represents a change in shares of 0.41% during the quarter. The current value of the position is $10,247,103 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F GREENE CNTY BANCORP COM 394357107 371,003 1,517 0.41 8,247 -1.23 0.0001
2025-11-07 2025-09-30 13F GREENE CNTY BANCORP COM 394357107 369,486 4,650 1.27 8,350 3.01 0.0001
2025-08-11 2025-06-30 13F GREENE CNTY BANCORP COM 394357107 364,836 -5,635 -1.52 8,107 -9.25 0.0001
2025-05-09 2025-03-31 13F GREENE CNTY BANCORP COM 394357107 370,471 -5,281 -1.41 8,932 -14.24 0.0002
2025-02-11 2024-12-31 13F GREENE CNTY BANCORP COM 394357107 375,752 1,037 0.28 10,416 -10.04 0.0002
2024-11-13 2024-09-30 13F GREENE CNTY BANCORP COM 394357107 374,715 6,366 1.73 11,579 -6.76 0.0002
2024-08-13 2024-06-30 13F GREENE CNTY BANCORP COM 394357107 368,349 6,153 1.70 12,417 19.09 0.0002
2024-05-10 2024-03-31 13F GREENE CNTY BANCORP COM 394357107 362,196 2,407 0.67 10,428 2.77 0.0002
2024-03-11 2023-12-31 13F/A-1 GREENE CNTY BANCORP COM 394357107 359,789 3,133 0.88 10,146 18.29 0.0002
2024-02-14 2023-12-31 13F GREENE CNTY BANCORP COM 394357107 359,789 3,133 10,146 0.0002
2023-12-18 2023-09-30 13F/A-1 GREENE CNTY BANCORP COM 394357107 356,656 6,328 1.81 8,578 -17.84 0.0002
2023-11-14 2023-09-30 13F GREENE CNTY BANCORP COM 394357107 356,656 6,328 8,578 0.0000
2023-08-14 2023-06-30 13F GREENE CNTY BANCORP COM 394357107 350,328 -3,005 -0.85 10,440 30.28 0.0002
2023-07-14 2023-03-31 13F/A-1 GREENE CNTY BANCORP COM 394357107 353,333 177,620 101.09 8,014 -20.58 0.0002
2023-05-15 2023-03-31 13F GREENE CNTY BANCORP COM 394357107 353,333 177,620 8,014 0.0002
2023-02-10 2022-12-31 13F GREENE CNTY BANCORP COM 394357107 175,713 748 0.43 10,089 0.69 0.0003
2022-11-14 2022-09-30 13F GREENE CNTY BANCORP COM 394357107 174,965 -102 -0.06 10,020 26.37 0.0003
2022-08-12 2022-06-30 13F GREENE CNTY BANCORP COM 394357107 175,067 30,531 21.12 7,929 22.74 0.0002
2022-05-13 2022-03-31 13F GREENE CNTY BANCORP COM 394357107 144,536 23,121 19.04 6,460 44.78 0.0002
2022-02-14 2021-12-31 13F GREENE CNTY BANCORP COM 394357107 121,415 -108 -0.09 4,462 1.39 0.0001
2021-11-12 2021-09-30 13F GREENE CNTY BANCORP COM 394357107 121,523 0 0.00 4,401 28.80 0.0001
2021-08-13 2021-06-30 13F GREENE CNTY BANCORP COM 394357107 121,523 -8,899 -6.82 3,417 4.75 0.0001
2021-05-14 2021-03-31 13F GREENE COUNTY BANCORP COM 394357107 130,422 1,344 1.04 3,262 -0.85 0.0001
2021-02-12 2020-12-31 13F GREENE COUNTY BANCORP COM 394357107 129,078 1,331 1.04 3,290 18.73 0.0001
2020-11-16 2020-09-30 13F GREENE COUNTY BANCORP COM 394357107 127,747 -414 -0.32 2,771 -3.04 0.0001
2020-08-14 2020-06-30 13F GREENE COUNTY BANCORP COM 394357107 128,161 -3,966 -3.00 2,858 -7.36 0.0001
2020-05-15 2020-03-31 13F GREENE COUNTY BANCORP COM 394357107 132,127 2,838 2.20 3,085 -17.11 0.0001
2020-02-14 2019-12-31 13F GREENE COUNTY BANCORP COM 394357107 129,289 446 0.35 3,722 5.44 0.0001
2019-11-14 2019-09-30 13F GREENE COUNTY BANCORP COM 394357107 128,843 1,637 1.29 3,530 -5.67 0.0001
2019-08-14 2019-06-30 13F GREENE COUNTY BANCORP COM 394357107 127,206 3,726 3.02 3,742 -0.19 0.0001
2019-05-15 2019-03-31 13F GREENE COUNTY BANCORP COM 394357107 123,480 1,015 0.83 3,749 -1.63 0.0001
2019-02-14 2018-12-31 13F GREENE COUNTY BANCORP COM 394357107 122,465 203 0.17 3,811 -2.90 0.0002
2018-12-13 2018-09-30 13F/A-2 GREENE COUNTY BANCORP COM 394357107 122,262 2,718 2.27 3,925 -3.16 0.0002
2018-11-23 2018-09-30 13F/A-1 GREENE COUNTY BANCORP COM 394357107 122,262 0 3,925 0.0002
2018-11-14 2018-09-30 13F GREENE COUNTY BANCORP COM 394357107 122,262 2,718 3,925
2018-08-14 2018-06-30 13F GREENE COUNTY BANCORP COM 394357107 119,544 9,987 9.12 4,053 0.80 0.0002
2018-05-15 2018-03-31 13F GREENE COUNTY BANCORP COM 394357107 109,557 621 0.57 4,021 13.24 0.0002
2018-02-14 2017-12-31 13F GREENE COUNTY BANCORP COM 394357107 108,936 1,151 1.07 3,551 9.63 0.0002
2017-11-14 2017-09-30 13F GREENE COUNTY BANCORP COM 394357107 107,785 36,695 51.62 3,239 67.48 0.0002
2017-08-24 2017-06-30 13F/A-1 GREENE COUNTY BANCORP COM 394357107 71,090 1,335 1.91 1,934 18.72 0.0001
2017-08-11 2017-06-30 13F GREENE COUNTY BANCORP COM 394357107 71,090 1,335 1,934
2017-05-12 2017-03-31 13F GREENE COUNTY BANCORP COM 394357107 69,755 55,762 398.50 1,629 407.48 0.0001
2017-02-14 2016-12-31 13F GREENE COUNTY BANCORP COM 394357107 13,993 292 2.13 321 40.17 0.0000
2016-11-14 2016-09-30 13F GREENE COUNTY BANCORP COM 394357107 13,701 90 0.66 229 3.15 0.0000
2016-08-10 2016-06-30 13F GREENE COUNTY BANCORP COM 394357107 13,611 13,611 222 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.