Greene County Bancorp Inc.

GCBC·NASDAQ·$25.25Share Price as of 11/2·$430MMarket Cap as of 11/2

Financials

10-KFY 202609/09/26 10-QQ3 ended 03/31/2605/08/26 10-QQ2 ended 12/31/2502/06/26 10-QQ1 ended 09/30/2511/07/25 10-KFY 202509/05/25

Disclosures

8-KCurrent report10/22/26 8-KCurrent report10/21/26 8-KCurrent report09/15/26 8-KCurrent report07/23/26 8-KCurrent report07/22/26

Prospectuses and Registrations

S-8Registration of securities for employees12/18/09 S-8Registration of securities for employees12/08/00 424B3Prospectus11/25/98

Proxies

DEF 14ADefinitive proxy09/25/26 DEFA14AAdditional proxy materials09/25/26 PRE 14APreliminary proxy09/15/26 DEF 14ADefinitive proxy09/19/25 DEFA14AAdditional proxy materials09/19/25

Ownership

Form 4Insider transaction06/15/26 144Proposed sale of securities06/11/26 Form 4Insider transaction04/28/26 Form 4Insider transaction03/18/26 Form 4Insider transaction03/18/26

Other

ARSAnnual report to shareholders09/25/26 11-KEmployee stock purchase plan report06/24/26 ARSAnnual report to shareholders09/19/25 11-KEmployee stock purchase plan report06/26/25 ARSAnnual report to shareholders09/20/24