Winchester Bancorp, Inc.

WSBK

Financials

10-KFY 202609/16/26 10-QQ3 ended 03/31/2605/13/26 10-QQ2 ended 12/31/2502/11/26 10-QQ1 ended 09/30/2511/12/25 10-KFY 202509/17/25

Disclosures

8-KCurrent report10/28/26 8-KCurrent report09/30/26 8-KCurrent report07/30/26 8-KCurrent report04/29/26 8-KCurrent report01/28/26

Prospectuses and Registrations

424B3Prospectus03/20/25 424B3Prospectus02/21/25 S-1/ARegistration statement (amended)02/06/25 S-1/ARegistration statement (amended)01/28/25 S-1Registration statement (IPO)12/12/24

Proxies

DEF 14ADefinitive proxy09/28/26 DEF 14ADefinitive proxy10/10/25

Ownership

Form 4Insider transaction05/27/26 Form 4Insider transaction05/22/26 Form 4Insider transaction05/08/26 Form 4Insider transaction05/06/26 Form 4Insider transaction05/05/26

Other

ARSAnnual report to shareholders09/28/26 ARSAnnual report to shareholders10/10/25 CERTCEO/CFO certification05/01/25 8-A12B8-A12B04/30/25 EFFECTRequest for effectiveness02/11/25