# Winchester Bancorp, Inc.: filings

WSBK · Nasdaq · CIK 2047235 · [Financials](/sectors/financials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/wsbk.md) · [Financials](/companies/wsbk/financials.md) · [Filings](/companies/wsbk/filings.md) · [Insiders](/companies/wsbk/insiders.md)

## Reports and events: 27 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (3 16, 8-K 14, 4 9, 10-Q 5, CORRESP 3, 10-K 2, 424B3 2, ARS 2, DEF 14A 2, S-1/A 2, 8-A12B 1, CERT 1, EFFECT 1, S-1 1, SCHEDULE 13D 1, UPLOAD 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-09-30 | 07:20 ET | [8-K](/filings/0001193125-26-408295.md) | 8.01 Other events | 0001193125-26-408295 |
| 2026-09-28 | 08:22 ET | [DEF 14A](/filings/0001193125-26-403439.md) | Proxy statement, period 2026-09-28 | 0001193125-26-403439 |
| 2026-09-16 | 18:07 ET | [10-K](/filings/0001193125-26-392194.md) | Annual report, period 2026-06-30 | 0001193125-26-392194 |
| 2026-07-30 | 07:42 ET | [8-K](/filings/0001193125-26-324928.md) | 2.02 Results of operations; 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-26-324928 |
| 2026-05-13 | 16:02 ET | [10-Q](/filings/0001193125-26-221566.md) | Quarterly report, period 2026-03-31 | 0001193125-26-221566 |
| 2026-04-29 | 15:54 ET | [8-K](/filings/0001193125-26-191386.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-191386 |
| 2026-02-11 | 14:26 ET | [10-Q](/filings/0001193125-26-046248.md) | Quarterly report, period 2025-12-31 | 0001193125-26-046248 |
| 2026-01-28 | 15:57 ET | [8-K](/filings/0001193125-26-027185.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-027185 |
| 2025-11-13 | 12:52 ET | [8-K](/filings/0001193125-25-279601.md) | 5.07 Shareholder vote results | 0001193125-25-279601 |
| 2025-11-12 | 16:00 ET | [10-Q](/filings/0001193125-25-277465.md) | Quarterly report, period 2025-09-30 | 0001193125-25-277465 |
| 2025-10-22 | 15:57 ET | [8-K](/filings/0001193125-25-246729.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-246729 |
| 2025-10-10 | 10:00 ET | [DEF 14A](/filings/0001193125-25-236598.md) | Proxy statement, period 2025-11-12 | 0001193125-25-236598 |
| 2025-09-17 | 17:14 ET | [8-K](/filings/0001193125-25-206345.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-206345 |
| 2025-09-17 | 17:09 ET | [10-K](/filings/0001193125-25-206332.md) | Annual report, period 2025-06-30 | 0001193125-25-206332 |
| 2025-07-30 | 16:07 ET | [8-K](/filings/0000950170-25-100224.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000950170-25-100224 |
| 2025-05-14 | 18:36 ET | [SCHEDULE 13D](/filings/0000950170-25-071716.md) | Ownership report, active investor | 0000950170-25-071716 |
| 2025-05-12 | 16:18 ET | [10-Q](/filings/0000950170-25-069255.md) | Quarterly report, period 2025-03-31 | 0000950170-25-069255 |
| 2025-05-06 | 17:19 ET | [8-K](/filings/0000943374-25-000192.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000943374-25-000192 |
| 2025-04-30 | 09:05 ET | [8-K](/filings/0000943374-25-000173.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000943374-25-000173 |
| 2025-04-30 | 09:04 ET | [8-K](/filings/0000943374-25-000172.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000943374-25-000172 |
| 2025-03-27 | 11:41 ET | [10-Q](/filings/0000950170-25-045817.md) | Quarterly report, period 2024-12-31 | 0000950170-25-045817 |
| 2025-03-21 | 17:15 ET | [8-K](/filings/0001193125-25-060347.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-060347 |
| 2025-03-20 | 09:02 ET | [8-K](/filings/0001193125-25-058404.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-058404 |
| 2025-02-18 | 10:07 ET | [8-K](/filings/0001193125-25-028296.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-25-028296 |
| 2025-02-06 | 16:35 ET | [S-1/A](/filings/0001193125-25-021824.md) | Registration statement, amended | 0001193125-25-021824 |
| 2025-01-28 | 16:42 ET | [S-1/A](/filings/0001193125-25-014427.md) | Registration statement, amended | 0001193125-25-014427 |
| 2024-12-12 | 14:04 ET | [S-1](/filings/0001193125-24-276691.md) | Registration statement | 0001193125-24-276691 |

Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:06 ET. No prices; not investment advice.