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United States

Greene County Bancorp Inc (GCBC)

Track

Over the last 90 days, Greene County Bancorp Inc. has seen insider activity with a net buy value of $231,818.9. There were 6 transactions in total, with 2 net insiders buying. A notable proposed sale of $282,100 by a Director occurred on June 11, 2026. The stock has experienced a 32.3% price increase over the past 90 days.
Stock chart
Ticker: GCBC Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
PLUMMER MICHELLE M
1 sale — total 100,000 USD
Sale 11 Jun 2026
Value US$3,033,339.17 | Price 450.48 | Shares 48,626
Proposed sale 11 Jun 2026
Value US$2,668,766.18 | Price 381.80 | Shares 21,916
Buy 28 Apr 2026
Value US$50,004.50 | Price 24.50 | Shares 2,041
Buy 27 Apr 2026
Value US$25,022.40 | Price 24.06 | Shares 1,040
Buy 27 Apr 2026
Value US$25,012.00 | Price 24.05 | Shares 1,040
Buy 18 Mar 2026
Value US$87,800.00 | Price 21.95 | Shares 4,000
Buy 17 Mar 2026
Value US$43,980.00 | Price 21.99 | Shares 2,000
Buy 5 Mar 2026
Value US$28,864.00 | Price 22.55 | Shares 1,280
Buy 2 Mar 2026
Value US$28,665.00 | Price 22.05 | Shares 1,300
Buy 18 Nov 2025
Value US$65,880.00 | Price 21.96 | Shares 3,000
Buy 18 Nov 2025
Value US$33,000.00 | Price 22.00 | Shares 1,500
Buy 14 Nov 2025
Value US$8,052.00 | Price 22.00 | Shares 366
Buy 5 Nov 2025
Value US$33,780.00 | Price 22.52 | Shares 1,500
Buy 4 Nov 2025
Value US$999.00 | Price 22.20 | Shares 45
Buy 3 Nov 2025
Value US$5,123.00 | Price 21.80 | Shares 235
Buy 29 Oct 2025
Value US$10,875.00 | Price 21.75 | Shares 500
Buy 29 Oct 2025
Value US$11,000.00 | Price 22.00 | Shares 500
Buy 29 Oct 2025
Value US$9,640.17 | Price 22.79 | Shares 423
Buy 28 Oct 2025
Value US$16,174.46 | Price 22.91 | Shares 706
Buy 24 Oct 2025
Value US$18,289.80 | Price 22.58 | Shares 810
Buy 24 Oct 2025
Value US$9,133.44 | Price 22.72 | Shares 402
Buy 24 Oct 2025
Value US$11,335.00 | Price 22.67 | Shares 500
Buy 24 Oct 2025
Value US$226.20 | Price 22.62 | Shares 10
Buy 24 Oct 2025
Value US$610.20 | Price 22.60 | Shares 27
Buy 24 Oct 2025
Value US$38,794.00 | Price 22.82 | Shares 1,700
Buy 24 Oct 2025
Value US$2,300.78 | Price 22.78 | Shares 101
Buy 24 Oct 2025
Value US$13,650.00 | Price 22.75 | Shares 600
Buy 24 Oct 2025
Value US$3,403.50 | Price 22.69 | Shares 150
Buy 15 May 2025
Value US$8,904.60 | Price 22.95 | Shares 388
Buy 14 May 2025
Value US$151,745.40 | Price 22.95 | Shares 6,612
Buy 5 May 2025
Value US$855.00 | Price 22.50 | Shares 38
Buy 2 May 2025
Value US$225.00 | Price 22.50 | Shares 10
Buy 2 May 2025
Value US$625.24 | Price 22.33 | Shares 28
Buy 2 May 2025
Value US$2,344.65 | Price 22.33 | Shares 105
Buy 1 May 2025
Value US$6,438.00 | Price 22.20 | Shares 290
Buy 25 Apr 2025
Value US$32,250.00 | Price 21.50 | Shares 1,500
Buy 19 Mar 2025
Value US$46,500.00 | Price 23.25 | Shares 2,000
Buy 19 Mar 2025
Value US$23,260.00 | Price 23.26 | Shares 1,000
Buy 19 Mar 2025
Value US$94,000.00 | Price 23.50 | Shares 4,000
Buy 28 Feb 2025
Value US$48,492.00 | Price 26.94 | Shares 1,800
Buy 27 Feb 2025
Value US$51,418.80 | Price 26.45 | Shares 1,944
Buy 31 Jan 2025
Value US$22,260.00 | Price 26.50 | Shares 840
Buy 1 Nov 2024
Value US$56,000.00 | Price 28.00 | Shares 2,000
Buy 25 Oct 2024
Value US$25,488.81 | Price 28.57 | Shares 892
Sale 18 Jun 2024
Value US$273,956.13 | Price 30.56 | Shares 8,966
Proposed sale 18 Jun 2024
Value US$273,956.13 | Price 30.56 | Shares 8,966
Sale 17 Jun 2024
Value US$6,080.00 | Price 30.40 | Shares 200
Proposed sale 17 Jun 2024
Value US$6,080.00 | Price 30.40 | Shares 200
Sale 13 Jun 2024
Value US$95,629.28 | Price 30.32 | Shares 3,154
Proposed sale 13 Jun 2024
Value US$95,639.69 | Price 30.32 | Shares 3,154
Sale 15 May 2024
Value US$55,176.90 | Price 31.62 | Shares 1,745
Sale 15 May 2024
Value US$46,036.20 | Price 31.64 | Shares 1,455
Sale 15 May 2024
Value US$47,995.20 | Price 31.68 | Shares 1,515
Sale 15 May 2024
Value US$74,266.15 | Price 31.67 | Shares 2,345
Proposed sale 15 May 2024
Value US$221,119.00 | Price 31.32 | Shares 7,060
Buy 18 Sep 2023
Value US$24,500.00 | Price 24.50 | Shares 1,000
Sale 14 Aug 2023
Value US$19,170.90 | Price 35.70 | Shares 537
Sale 4 Aug 2023
Value US$61,299.00 | Price 34.75 | Shares 1,764
Sale 4 Aug 2023
Value US$65,274.00 | Price 34.50 | Shares 1,892
Sale 31 Jul 2023
Value US$621.00 | Price 34.50 | Shares 18
Sale 28 Jul 2023
Value US$3,105.00 | Price 34.50 | Shares 90
Sale 7 Jun 2023
Value US$283,549.00 | Price 28.35 | Shares 10,000
Buy 8 May 2023
Value US$36,400.00 | Price 18.20 | Shares 2,000
Buy 28 Feb 2023
Value US$41,007.46 | Price 56.95 | Shares 720
Buy 10 Feb 2023
Value US$27,168.00 | Price 48.00 | Shares 566
Sale 27 Jan 2023
Value US$229,078.00 | Price 47.00 | Shares 4,874
Buy 26 Jan 2023
Value US$11,575.00 | Price 46.30 | Shares 250
Buy 26 Jan 2023
Value US$11,550.00 | Price 46.20 | Shares 250
Buy 26 Jan 2023
Value US$11,600.00 | Price 46.40 | Shares 250
Buy 26 Jan 2023
Value US$11,625.00 | Price 46.50 | Shares 250
Buy 7 Dec 2022
Value US$22,815.73 | Price 73.84 | Shares 309
Buy 14 Jun 2022
Value US$48,375.00 | Price 45.00 | Shares 1,075
Buy 13 Jun 2022
Value US$20,655.00 | Price 45.00 | Shares 459
Buy 13 Jun 2022
Value US$22,000.00 | Price 44.00 | Shares 500
Buy 10 Jun 2022
Value US$1,845.00 | Price 45.00 | Shares 41
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-15 2026-06-11 S Sale
2.6
PLUMMER MICHELLE M
Non-Executive Director
48,626 -49.5%
450.48
US$3,033,339 		48,626 -49.5% 450.48 US$3,033,339
2026-06-11 2026-06-11 PrS Proposed sale
2.6
Plummer, Michelle M. (GCBC)

Director

Non-Executive Director
21,916
381.80
US$2,668,766 		21,916 381.80 US$2,668,766
2026-04-28 2026-04-28 B Purchase
Brust John
Non-Executive Director
19,351 -4.0%
433.16
US$2,067,775 		19,351 -4.0% 433.16 US$2,067,775
2026-04-28 2026-04-27 B Purchase
Brust John
Non-Executive Director
1,040 +33.1%
24.06
US$25,022 		1,040 +33.1% 24.06 US$25,022
2026-04-28 2026-04-27 B Purchase
Brust John
Non-Executive Director
1,040 +49.5%
24.05
US$25,012 		1,040 +49.5% 24.05 US$25,012
2026-03-18 2026-03-18 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
4,000 +12.7%
21.95
US$87,800 		4,000 +12.7% 21.95 US$87,800
2026-03-18 2026-03-17 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
2,000 +6.8%
21.99
US$43,980 		2,000 +6.8% 21.99 US$43,980
2026-03-05 2026-03-05 B Purchase
2.9
Barzee Nick

SVP and CFO

Officer
1,280 +39.5%
22.55
US$28,864 		1,280 +39.5% 22.55 US$28,864
2026-03-03 2026-03-02 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
1,300 +42.2%
22.05
US$28,665 		1,300 +42.2% 22.05 US$28,665
2025-11-19 2025-11-18 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
3,000 +12.0%
21.96
US$65,880 		3,000 +12.0% 21.96 US$65,880
2025-11-19 2025-11-18 B Purchase
2.5
Antalek John

EVP and CLO

Officer
1,500 +24.7%
22.00
US$33,000 		1,500 +24.7% 22.00 US$33,000
2025-11-17 2025-11-14 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
366 +1.5%
22.00
US$8,052 		366 +1.5% 22.00 US$8,052
2025-11-06 2025-11-05 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
1,500 +6.5%
22.52
US$33,780 		1,500 +6.5% 22.52 US$33,780
2025-11-06 2025-11-04 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
45 +0.2%
22.20
US$999 		45 +0.2% 22.20 US$999
2025-11-04 2025-11-03 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
235 +1.0%
21.80
US$5,123 		235 +1.0% 21.80 US$5,123
2025-10-30 2025-10-29 B Purchase
3.8
Gibson Donald E

President and CEO

Executive Director
500 +100.0%
21.75
US$10,875 		500 +100.0% 21.75 US$10,875
2025-10-30 2025-10-29 B Purchase
3.8
Gibson Donald E

President and CEO

Executive Director
500 +inf%
22.00
US$11,000 		500 +inf% 22.00 US$11,000
2025-10-30 2025-10-29 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
423 +15.9%
22.79
US$9,640 		423 +15.9% 22.79 US$9,640
2025-10-30 2025-10-28 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
706 +36.2%
22.91
US$16,174 		706 +36.2% 22.91 US$16,174
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
810 +2.3%
22.58
US$18,290 		810 +2.3% 22.58 US$18,290
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
402 +1.2%
22.72
US$9,133 		402 +1.2% 22.72 US$9,133
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
500 +1.5%
22.67
US$11,335 		500 +1.5% 22.67 US$11,335
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
10 +0.0%
22.62
US$226 		10 +0.0% 22.62 US$226
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
27 +0.1%
22.60
US$610 		27 +0.1% 22.60 US$610
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
1,700 +5.3%
22.82
US$38,794 		1,700 +5.3% 22.82 US$38,794
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
101 +0.3%
22.78
US$2,301 		101 +0.3% 22.78 US$2,301
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
600 +1.9%
22.75
US$13,650 		600 +1.9% 22.75 US$13,650
2025-10-24 2025-10-24 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
150 +0.5%
22.69
US$3,404 		150 +0.5% 22.69 US$3,404
2025-05-15 2025-05-15 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
388 +1.7%
22.95
US$8,905 		388 +1.7% 22.95 US$8,905
2025-05-15 2025-05-14 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
6,612 +42.1%
22.95
US$151,745 		6,612 +42.1% 22.95 US$151,745
2025-05-05 2025-05-05 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
38 +2.0%
22.50
US$855 		38 +2.0% 22.50 US$855
2025-05-05 2025-05-02 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
10 +35.7%
22.50
US$225 		10 +35.7% 22.50 US$225
2025-05-05 2025-05-02 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
28 +inf%
22.33
US$625 		28 +inf% 22.33 US$625
2025-05-05 2025-05-02 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
105 +5.8%
22.33
US$2,345 		105 +5.8% 22.33 US$2,345
2025-05-05 2025-05-01 B Purchase
2.9
Cannucciari Christopher
Non-Executive Director
290 +19.1%
22.20
US$6,438 		290 +19.1% 22.20 US$6,438
2025-04-25 2025-04-25 B Purchase
2.9
Barzee Nick

SVP and CFO

Officer
1,500 +86.2%
21.50
US$32,250 		1,500 +86.2% 21.50 US$32,250
2025-03-20 2025-03-19 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
2,000 +14.6%
23.25
US$46,500 		2,000 +14.6% 23.25 US$46,500
2025-03-20 2025-03-19 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
1,000 +7.9%
23.26
US$23,260 		1,000 +7.9% 23.26 US$23,260
2025-03-20 2025-03-19 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
4,000 +45.9%
23.50
US$94,000 		4,000 +45.9% 23.50 US$94,000
2025-03-03 2025-02-28 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
1,800 +6.1%
26.94
US$48,492 		1,800 +6.1% 26.94 US$48,492
2025-03-03 2025-02-27 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
1,944 +7.1%
26.45
US$51,419 		1,944 +7.1% 26.45 US$51,419
2025-02-03 2025-01-31 B Purchase
2.9
Barzee Nick

SVP and CFO

Officer
840 +93.3%
26.50
US$22,260 		840 +93.3% 26.50 US$22,260
2024-11-04 2024-11-01 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
2,000 +30.1%
28.00
US$56,000 		2,000 +30.1% 28.00 US$56,000
2024-10-25 2024-10-25 B Purchase
2.9
Barzee Nick

SVP and CFO

Officer
892 +11150.0%
28.57
US$25,489 		892 +11150.0% 28.57 US$25,489
2024-06-20 2024-06-18 S Sale
2.6
PLUMMER MICHELLE M

SEVP, CFO & COO

Executive Director
8,966 -7.6%
30.56
US$273,956 		8,966 -7.6% 30.56 US$273,956
2024-06-18 2024-06-18 PrS Proposed sale
2.6
MICHELLE PLUMMER

Officer

Officer
8,966
30.56
US$273,956 		8,966 30.56 US$273,956
2024-06-20 2024-06-17 S Sale
2.6
PLUMMER MICHELLE M

SEVP, CFO & COO

Executive Director
200 -0.2%
30.40
US$6,080 		200 -0.2% 30.40 US$6,080
2024-06-17 2024-06-17 PrS Proposed sale
2.6
MICHELLE PLUMMER

Officer

Officer
200
30.40
US$6,080 		200 30.40 US$6,080
2024-06-17 2024-06-13 S Sale
2.6
PLUMMER MICHELLE M

SEVP, CFO & COO

Executive Director
3,154 -2.6%
30.32
US$95,629 		3,154 -2.6% 30.32 US$95,629
2024-06-13 2024-06-13 PrS Proposed sale
2.6
MICHELLE PLUMMER

Officer

Officer
3,154
30.32
US$95,640 		3,154 30.32 US$95,640
2024-05-17 2024-05-15 S Sale
3.7
Cahalan Jay P.
Non-Executive Director
1,745 -100.0%
31.62
US$55,177 		1,745 -100.0% 31.62 US$55,177
2024-05-17 2024-05-15 S Sale
3.7
Cahalan Jay P.
Non-Executive Director
1,455 -45.5%
31.64
US$46,036 		1,455 -45.5% 31.64 US$46,036
2024-05-17 2024-05-15 S Sale
3.7
Cahalan Jay P.
Non-Executive Director
1,515 -32.1%
31.68
US$47,995 		1,515 -32.1% 31.68 US$47,995
2024-05-17 2024-05-15 S Sale
3.7
Cahalan Jay P.
Non-Executive Director
2,345 -33.2%
31.67
US$74,266 		2,345 -33.2% 31.67 US$74,266
2024-05-15 2024-05-15 PrS Proposed sale
3.7
Cahalan Jay P.

Director

Non-Executive Director
7,060
31.32
US$221,119 		7,060 31.32 US$221,119
2023-09-19 2023-09-18 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
1,000 +17.9%
24.50
US$24,500 		1,000 +17.9% 24.50 US$24,500
2023-08-16 2023-08-14 S Sale
3.8
Gibson Donald E

President and CEO

Executive Director
537 -100.0%
35.70
US$19,171 		537 -100.0% 35.70 US$19,171
2023-08-07 2023-08-04 S Sale
3.8
Gibson Donald E

President and CEO

Executive Director
1,764 -76.7%
34.75
US$61,299 		1,764 -76.7% 34.75 US$61,299
2023-08-07 2023-08-04 S Sale
3.8
Gibson Donald E

President and CEO

Executive Director
1,892 -45.1%
34.50
US$65,274 		1,892 -45.1% 34.50 US$65,274
2023-08-01 2023-07-31 S Sale
3.8
Gibson Donald E

President and CEO

Executive Director
18 -0.4%
34.50
US$621 		18 -0.4% 34.50 US$621
2023-08-01 2023-07-28 S Sale
3.8
Gibson Donald E

President and CEO

Executive Director
90 -2.1%
34.50
US$3,105 		90 -2.1% 34.50 US$3,105
2023-06-08 2023-06-07 S Sale
2.6
PLUMMER MICHELLE M

SEVP, CFO & COO

Executive Director
10,000 -7.6%
28.35
US$283,549 		10,000 -7.6% 28.35 US$283,549
2023-05-09 2023-05-08 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
2,000 +56.4%
18.20
US$36,400 		2,000 +56.4% 18.20 US$36,400
2023-03-01 2023-02-28 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
720 +5.6%
56.95
US$41,007 		720 +5.6% 56.95 US$41,007
2023-02-13 2023-02-10 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
566 +47.0%
48.00
US$27,168 		566 +47.0% 48.00 US$27,168
2023-01-30 2023-01-27 S Sale
1.3
NELSON STEPHEN E
Non-Executive Director
4,874 -22.3%
47.00
US$229,078 		4,874 -22.3% 47.00 US$229,078
2023-01-30 2023-01-26 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
250 +26.2%
46.30
US$11,575 		250 +26.2% 46.30 US$11,575
2023-01-30 2023-01-26 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
250 +35.5%
46.20
US$11,550 		250 +35.5% 46.20 US$11,550
2023-01-30 2023-01-26 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
250 +55.1%
46.40
US$11,600 		250 +55.1% 46.40 US$11,600
2023-01-30 2023-01-26 B Purchase
3.5
Hada Tejraj S
Non-Executive Director
250 +122.5%
46.50
US$11,625 		250 +122.5% 46.50 US$11,625
2023-01-09 2022-12-07 B Purchase
1.3
NELSON STEPHEN E
Non-Executive Director
309 +1.4%
73.84
US$22,816 		309 +1.4% 73.84 US$22,816
2022-06-16 2022-06-14 B Purchase
3.7
Cahalan Jay P.
Non-Executive Director
1,075 +9.0%
45.00
US$48,375 		1,075 +9.0% 45.00 US$48,375
2022-06-14 2022-06-13 B Purchase
3.8
Gibson Donald E

President and CEO

Executive Director
459 +6.9%
45.00
US$20,655 		459 +6.9% 45.00 US$20,655
2022-06-14 2022-06-13 B Purchase
3.8
Gibson Donald E

President and CEO

Executive Director
500 +8.1%
44.00
US$22,000 		500 +8.1% 44.00 US$22,000
2022-06-13 2022-06-10 B Purchase
3.8
Gibson Donald E

President and CEO

Executive Director
41 +0.7%
45.00
US$1,845 		41 +0.7% 45.00 US$1,845
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