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