Comparable stake leader
FMR LLC
SEC ownership of GREENE COUNTY BANCORP INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001070524.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 Jun 2026
- Public ticker
- GCBC on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
FMR LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
FMR LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
11 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001070524
- Issuer location
- Catskill, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of GREENE COUNTY BANCORP INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 4%
13D/G row: FMR LLC
Showing 1-8 of 50 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 4%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 5
FMR LLC
4%
Donald E. Gibson
1%
Michelle M. Plummer
0.89%
Peter W. Hogan
0.44%
Tejraj S. Hada
0.21%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
Company
|
4%
|
$14,781,028
677,097 shares
|
$0 | 31 Dec 2024 |
| Donald E. Gibson |
3/4/5
President and CEO, Director
|
1%
|
$3,868,157
171,195 shares
|
+$21,875 | 29 Oct 2025 |
| Michelle M. Plummer |
3/4/5
Director
|
0.89%
|
$3,992,169
149,887 shares
|
-$287,700 | 11 Jun 2026 |
| Peter W. Hogan |
3/4/5
Director
|
0.44%
|
$1,657,500
75,000 shares
|
+$66,300 | 18 Mar 2026 |
| Tejraj S. Hada |
3/4/5
Director
|
0.21%
|
$777,622
35,427 shares
|
+$245,614 | 17 Mar 2026 |
| Jay P. Cahalan |
3/4/5
Director
|
0.21%
|
$799,873
35,424 shares
|
+$97,743 | 24 Oct 2025 |
| John Antalek |
3/4/5
EVP and CLO
|
0.05%
|
$203,543
9,190 shares
|
+$33,000 | 18 Nov 2025 |
| John Brust |
3/4/5
Director
|
0.04%
|
$152,414
6,221 shares
|
+$100,039 | 27 Apr 2026 |
How to read this table
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.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$360,214.
Buys
$647,914
Insiders: 8
Sells
$287,700
Insiders: 1
Net
+$360,214
Shares: +18,776
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 28,776
Shares: 10,000
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 10,000 | $0 | $287,700 | -$287,700 |
| 3-6 | 15,701 | 0 | $355,648 | $0 | +$355,648 |
| 6-9 | 6,411 | 0 | $141,711 | $0 | +$141,711 |
| 9-12 | 6,664 | 0 | $150,556 | $0 | +$150,556 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-11 of 11 reporting-owner rows connected to GREENE COUNTY BANCORP INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
11
Largest Forms 3/4/5 holder
Michelle M. Plummer
Net 12M change
+$360,215
Latest report
11 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Michelle M. Plummer | Director | $3,992,169 | -$287,700 | -6.7% | Mixed | 11 Jun 2026 |
| 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 |
Recent insider transactions for GREENE COUNTY BANCORP INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michelle M. Plummer | GCBC | Common Stock | Sale | -9.13% | $287,700 | $28.77 | -10,000 | 99,560 | 11 Jun 2026 | Direct |
| 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 |
* marks a reported price that did not pass the local price check.