Winchester Bancorp, Inc./MD/ SEC EDGAR Filings (CIK 0002047235)

SEC EDGAR filings, ownership reports, and insider transactions for Winchester Bancorp, Inc./MD/.

Symbol
WSBK on Nasdaq
Industry
Savings Institutions, Not Federally Chartered (Office Of Finance)
Business address
661 Main Street, Winchester, MA, 01890
State of incorporation
MD
Fiscal year end
30 June
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Winchester Bancorp, Inc./MD/ has filed 49 SEC EDGAR filings since 12 Dec 2024

Latest Filings

Recent SEC filings for Winchester Bancorp, Inc./MD/ including 8-K, 10-Q, DEF 14A and more.

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Nov 2025 12 Nov 2025 001-42627
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 Nov 2025 30 Sep 2025 001-42627
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 22 Oct 2025 22 Oct 2025 001-42627
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 10 Oct 2025 12 Nov 2025 001-42627
ARS Open ARS document View SEC filing for ARS ARS 10 Oct 2025 30 Jun 2025 001-42627
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 17 Sep 2025 17 Sep 2025 001-42627
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 17 Sep 2025 30 Jun 2025 001-42627
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Jul 2025 30 Jul 2025 001-42627
4 Open 4 document View SEC filing for 4 FORM 4 10 Jun 2025 10 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 15 May 2025 14 May 2025
3 Open 3 document View SEC filing for 3 FORM 3 14 May 2025 30 Apr 2025
SCHEDULE 13D Open SCHEDULE 13D document View SEC filing for SCHEDULE 13D 14 May 2025 005-95022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 May 2025 31 Mar 2025 001-42627
4 Open 4 document View SEC filing for 4 FORM 4 09 May 2025 07 May 2025
3 Open 3 document View SEC filing for 3 FORM 3 07 May 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 07 May 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 07 May 2025 30 Apr 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K WINCHESTER BANCORP, INC. FORM 8-K APRIL 30, 2025 06 May 2025 30 Apr 2025 001-42627
4 Open 4 document View SEC filing for 4 FORM 4 06 May 2025 05 May 2025
CERT Open CERT document View SEC filing for CERT 01 May 2025 001-42627
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
3 Open 3 document View SEC filing for 3 FORM 3 30 Apr 2025 30 Apr 2025
8-A12B Open 8-A12B document View SEC filing for 8-A12B WINCHESTER BANCORP, INC. FORM 8-A APRIL 30, 2025 30 Apr 2025 001-42627
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K WINCHESTER BANCORP, INC. FORM 8-K APRIL 30, 2025 30 Apr 2025 30 Apr 2025 333-283752
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K WINCHESTER BANCORP, INC. FORM 8-K APRIL 29, 2025 30 Apr 2025 29 Apr 2025 333-283752
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 27 Mar 2025 31 Dec 2024 333-283752
8-K Open 8-K document View SEC filing for 8-K 8-K 21 Mar 2025 21 Mar 2025 333-283752
8-K Open 8-K document View SEC filing for 8-K 8-K 20 Mar 2025 20 Mar 2025 333-283752
424B3 Open 424B3 document View SEC filing for 424B3 424B3 20 Mar 2025 333-283752
424B3 Open 424B3 document View SEC filing for 424B3 424B3 21 Feb 2025 333-283752
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 18 Feb 2025 11 Feb 2025 333-283752
EFFECT Open EFFECT document View SEC filing for EFFECT 11 Feb 2025 333-283752
CORRESP Open CORRESP document View SEC filing for CORRESP 07 Feb 2025
CORRESP Open CORRESP document View SEC filing for CORRESP 07 Feb 2025
S-1/A Open S-1/A document View SEC filing for S-1/A S-1/A 06 Feb 2025 333-283752
CORRESP Open CORRESP document View SEC filing for CORRESP 28 Jan 2025
S-1/A Open S-1/A document | Open XBRL data View SEC filing for S-1/A S-1/A 28 Jan 2025 333-283752
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 08 Jan 2025 333-283752
S-1 Open S-1 document View SEC filing for S-1 S-1 12 Dec 2024 333-283752

About this filer

Winchester Bancorp, Inc./MD/ files with the SEC under CIK 0002047235. This page aggregates EDGAR filings and related ownership activity.

Industry: Savings Institutions, Not Federally Chartered.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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