Key facts
- GCBC - GREENE COUNTY BANCORP INC has 11 insiders with reported activity on this page.
- Net insider value flow over the last year: +$647,914.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 11 Insiders of GREENE COUNTY BANCORP INC
- Symbol
- GCBC on Nasdaq
- Location
- Catskill, NY
Change
- Buy value: $647,914; sell value: $0.
- Net share flow: +28,776.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$647,914.
Buys
$647,914
Shares: 28,776
Insiders: 8
Sells
$0
Shares: 0
Insiders: 0
Net
+$647,914
Shares: +28,776
Insiders: 8
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 15,701 | 0 | $355,648 | $0 | +$355,648 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 13,075 | 0 | $292,267 | $0 | +$292,267 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
GREENE COUNTY BANCORP INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Michelle M. Plummer | SEVP, CFO & COO, Director | $4,819,349 | Mixed | 17 Jun 2024 | ||
| Donald E. Gibson | President and CEO, Director | $3,868,157 | +$21,875 | +0.57% | Mixed | 29 Oct 2025 |
| Paul Slutzky | Director | $2,267,157 | Mixed | 01 Jun 2022 | ||
| Peter W. Hogan | Director | $1,657,500 | +$66,300 | +4.2% | Filing P/S | 18 Mar 2026 |
| Jay P. Cahalan | Director | $799,873 | +$97,743 | +14% | Filing P/S | 24 Oct 2025 |
| Tejraj S. Hada | Director | $777,622 | +$245,614 | +46% | Filing P/S | 17 Mar 2026 |
| Stephen E. Nelson | Director | $416,500 | Mixed | 27 Jan 2023 | ||
| John Antalek | EVP and CLO | $203,543 | +$33,000 | +19% | Mixed | 18 Nov 2025 |
| John Brust | Director | $152,414 | +$100,039 | +191% | Filing P/S | 27 Apr 2026 |
| Nick Barzee | SVP and CFO | $110,886 | +$28,864 | +35% | Mixed | 05 Mar 2026 |
| Christopher Cannucciari | Director | $104,739 | +$54,480 | +108% | Mixed | 02 Mar 2026 |
Top shareholders of GREENE COUNTY BANCORP INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
|
Company |
4%
|
677,097
|
$14,781,028 | $0 | 31 Dec 2024 | |
| Donald E. Gibson |
3/4/5
|
President and CEO, Director |
1%
|
171,195
|
$3,868,157 | +$21,875 | 29 Oct 2025 | |
| Peter W. Hogan |
3/4/5
|
Director |
0.44%
|
75,000
|
$1,657,500 | +$66,300 | 18 Mar 2026 | |
| Tejraj S. Hada |
3/4/5
|
Director |
0.21%
|
35,427
|
$777,622 | +$245,614 | 17 Mar 2026 | |
| Jay P. Cahalan |
3/4/5
|
Director |
0.21%
|
35,424
|
$799,873 | +$97,743 | 24 Oct 2025 | |
| John Antalek |
3/4/5
|
EVP and CLO |
0.05%
|
9,190
|
$203,543 | +$33,000 | 18 Nov 2025 | |
| John Brust |
3/4/5
|
Director |
0.04%
|
6,221
|
$152,414 | +$100,039 | 27 Apr 2026 | |
| Nick Barzee |
3/4/5
|
SVP and CFO |
0.03%
|
4,900
|
$110,886 | +$28,864 | 05 Mar 2026 | |
| Christopher Cannucciari |
3/4/5
|
Director |
0.03%
|
4,726
|
$104,739 | +$54,480 | 02 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
4%
|
678,228
|
$15,199,091 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.8%
|
298,151
|
$6,681,564 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.99%
|
166,924
|
$3,741,406 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
0.76%
|
128,801
|
$2,886,430 | — | 31 Mar 2026 | |
| NewEdge Advisors, LLC |
13F
|
Company |
0.65%
|
109,495
|
$109,495 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.55%
|
92,607
|
$2,075,873 | — | 31 Mar 2026 | |
| Covalent Partners LLC |
13F
|
Company |
0.41%
|
69,000
|
$1,546,290 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.4%
|
68,191
|
$1,528,160 | — | 31 Mar 2026 | |
| Angel Oak Capital Advisors, LLC |
13F
|
Company |
0.36%
|
61,000
|
$1,367,010 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.31%
|
52,418
|
$1,174,687 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.3%
|
51,000
|
$1,142,910 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.3%
|
50,966
|
$1,142,148 | — | 31 Mar 2026 | |
| LPL Financial LLC |
13F
|
Company |
0.25%
|
42,899
|
$961,373 | — | 31 Mar 2026 | |
| HSBC HOLDINGS PLC |
13F
|
Company |
0.25%
|
42,421
|
$968,047 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.24%
|
41,311
|
$925,780 | — | 31 Mar 2026 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.21%
|
34,948
|
$783,185 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.2%
|
34,487
|
$772,871 | — | 31 Mar 2026 | |
| BARCLAYS PLC |
13F
|
Company |
0.17%
|
28,571
|
$640,276 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.15%
|
25,861
|
$579,543 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.14%
|
23,628
|
$529,503 | — | 31 Mar 2026 | |
| STONERIDGE INVESTMENT PARTNERS LLC |
13F
|
Company |
0.13%
|
22,615
|
$507,000 | — | 31 Mar 2026 | |
| Nuveen, LLC |
13F
|
Company |
0.13%
|
22,603
|
$506,533 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.13%
|
21,302
|
$477,378 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.12%
|
19,576
|
$438,698 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.11%
|
18,640
|
$417,722 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.1%
|
16,565
|
$371,224 | — | 31 Mar 2026 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.08%
|
14,301
|
$320,483 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.07%
|
11,434
|
$256,236 | — | 31 Mar 2026 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.07%
|
11,430
|
$254,089 | — | 31 Mar 2026 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.05%
|
8,560
|
$191,822 | — | 31 Mar 2026 | |
| PITTENGER & ANDERSON INC |
13F
|
Company |
0.03%
|
5,065
|
$113,507 | — | 31 Mar 2026 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.02%
|
4,015
|
$89,977 | — | 31 Mar 2026 | |
| MetLife Investment Management, LLC |
13F
|
Company |
0.02%
|
3,923
|
$87,914 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.02%
|
3,450
|
$78,695 | — | 31 Mar 2026 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
0.02%
|
3,414
|
$76,508 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.02%
|
3,016
|
$67,589 | — | 31 Mar 2026 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
0.02%
|
2,659
|
$59,588 | — | 31 Mar 2026 | |
| Vanguard Global Advisers, LLC |
13F
|
Company |
0.01%
|
2,484
|
$55,666 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.01%
|
2,100
|
$47,061 | — | 31 Mar 2026 | |
| Police & Firemen's Retirement System of New Jersey |
13F
|
Company |
0.01%
|
1,407
|
$31,531 | — | 31 Mar 2026 | |
| CWM, LLC |
13F
|
Company |
0.01%
|
1,184
|
$26,533 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for GREENE COUNTY BANCORP INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Brust | GCBC | Common Stock | Purchase | 48.8% | $50,004 | $24.50 | 2,041 | 6,221 | 28 Apr 2026 | By 401(k) |
| John Brust | GCBC | Common Stock | Purchase | 99% | $50,034 | $24.06 | 2,080 | 4,180 | 27 Apr 2026 | By 401(k) |
| Peter W. Hogan | GCBC | Common Stock | Purchase | 4.17% | $66,300 | $22.10 | 3,000 | 75,000 | 18 Mar 2026 | By 401(k) |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 12.7% | $87,800 | $21.95 | 4,000 | 35,427 | 18 Mar 2026 | Direct |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 6.8% | $43,980 | $21.99 | 2,000 | 31,427 | 17 Mar 2026 | Direct |
| Nick Barzee | GCBC | Common Stock | Purchase | 39.5% | $28,864 | $22.55 | 1,280 | 4,520 | 05 Mar 2026 | By 401(k) |
| Christopher Cannucciari | GCBC | Common Stock | Purchase | 42.2% | $28,665 | $22.05 | 1,300 | 4,378 | 02 Mar 2026 | Direct |
| Tejraj S. Hada | GCBC | Common Stock | Small acquisition under Rule 16a-6 | 0.96% | 268 | 28,191 | 19 Nov 2025 | Direct | ||
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 12% | $65,880 | $21.96 | 3,000 | 27,923 | 18 Nov 2025 | Direct |
| John Antalek | GCBC | Common Stock | Purchase | 24.7% | $33,000 | $22.00 | 1,500 | 7,567 | 18 Nov 2025 | By 401(k) |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 1.49% | $8,052 | $22.00 | 366 | 24,923 | 14 Nov 2025 | Direct |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 6.51% | $33,780 | $22.52 | 1,500 | 24,557 | 05 Nov 2025 | Direct |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 0.2% | $999 | $22.20 | 45 | 23,057 | 04 Nov 2025 | Direct |
| Tejraj S. Hada | GCBC | Common Stock | Purchase | 1.03% | $5,123 | $21.80 | 235 | 23,012 | 03 Nov 2025 | Direct |
| Donald E. Gibson | GCBC | Common Stock | Purchase | $21,875 | $21.88 | 1,000 | 1,000 | 29 Oct 2025 | 401(k) | |
| Christopher Cannucciari | GCBC | Common Stock | Purchase | 15.9% | $9,640 | $22.79 | 423 | 3,078 | 29 Oct 2025 | Direct |
| Christopher Cannucciari | GCBC | Common Stock | Purchase | 36.2% | $16,174 | $22.91 | 706 | 2,655 | 28 Oct 2025 | Direct |
| Jay P. Cahalan | GCBC | Common Stock | Purchase | 13.8% | $97,743 | $22.73 | 4,300 | 35,424 | 24 Oct 2025 | Direct |
| Donald E. Gibson | GCBC | Common Stock | Gift | 125,100 | 125,100 | 11 Jun 2025 | By Trust | |||
| Donald E. Gibson | GCBC | Common Stock | Gift | -100% | -125,100 | 0 | 11 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.