Winchester Bancorp WSBK SEC Filings

NASDAQ WSBK
$13.82 +0.00 (+0.00%)
At close: Nov 13, 2026 · 4:00 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Winchester Bancorp, Inc./MD/ (WSBK) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
14Insider Transaction0001193125-26-451360Nov 6, 2026 5:58 PM
24Insider Transaction0001193125-26-451355Nov 6, 2026 5:56 PM
34Insider Transaction0001193125-26-451349Nov 6, 2026 5:52 PM
44Insider Transaction0001193125-26-451343Nov 6, 2026 5:51 PM
54Insider Transaction0001193125-26-451315Nov 6, 2026 5:40 PM
64Insider Transaction0001193125-26-451311Nov 6, 2026 5:38 PM
74Insider Transaction0001193125-26-451303Nov 6, 2026 5:35 PM
84Insider Transaction0001193125-26-451286Nov 6, 2026 5:29 PM
94Insider Transaction0001193125-26-451270Nov 6, 2026 5:24 PM
104Insider Transaction0001193125-26-451145Nov 6, 2026 4:26 PM
114Insider Transaction0001193125-26-451132Nov 6, 2026 4:18 PM
124Insider Transaction0001193125-26-451122Nov 6, 2026 4:12 PM
138-KCurrent Report0001193125-26-449165Nov 5, 2026 12:09 PM
1410-QQuarterly & Annual Report0001193125-26-447179Nov 4, 2026 9:02 PM
15S-8Prospectus0001193125-26-447483Nov 4, 2026 4:44 PM
168-KCurrent Report0001193125-26-436113Oct 28, 2026 8:01 PM
178-KCurrent Report0001193125-26-408295Sep 30, 2026 7:20 AM
18DEF 14AOthers0001193125-26-403439Sep 28, 2026 12:22 PM
19ARSOthers0001193125-26-403437Sep 28, 2026 12:21 PM
2010-KQuarterly & Annual Report0001193125-26-392194Sep 16, 2026 6:07 PM
218-KCurrent Report0001193125-26-324928Jul 30, 2026 11:42 AM
224Insider Transaction0001437749-26-018597May 27, 2026 8:54 PM
234Insider Transaction0001437749-26-018205May 22, 2026 3:58 PM
2410-QQuarterly & Annual Report0001193125-26-221566May 13, 2026 8:02 PM
254Insider Transaction0001437749-26-015781May 8, 2026 2:06 PM
264Insider Transaction0001437749-26-015135May 6, 2026 5:24 PM
274Insider Transaction0001437749-26-014760May 5, 2026 1:37 PM
288-KCurrent Report0001193125-26-191386Apr 29, 2026 7:54 PM
2910-QQuarterly & Annual Report0001193125-26-046248Feb 11, 2026 7:26 PM
308-KCurrent Report0001193125-26-027185Jan 28, 2026 8:57 PM
318-KCurrent Report0001193125-25-279601Nov 13, 2025 5:52 PM
3210-QQuarterly & Annual Report0001193125-25-277465Nov 12, 2025 9:00 PM
338-KCurrent Report0001193125-25-246729Oct 22, 2025 7:57 PM
34DEF 14AOthers0001193125-25-236598Oct 10, 2025 2:00 PM
35ARSOthers0001193125-25-236599Oct 10, 2025 2:00 PM
368-KCurrent Report0001193125-25-206345Sep 17, 2025 9:14 PM
3710-KQuarterly & Annual Report0001193125-25-206332Sep 17, 2025 9:09 PM
388-KCurrent Report0000950170-25-100224Jul 30, 2025 8:07 PM
394Insider Transaction0001437749-25-019968Jun 10, 2025 7:44 PM
404Insider Transaction0001437749-25-017190May 15, 2025 8:15 PM
413Insider Transaction0001437749-25-016957May 14, 2025 11:10 PM
42SCHEDULE 13DBeneficial Ownership Report0000950170-25-071716May 14, 2025 10:36 PM
4310-QQuarterly & Annual Report0000950170-25-069255May 12, 2025 8:18 PM
444Insider Transaction0001437749-25-015727May 9, 2025 4:53 PM
453Insider Transaction0001437749-25-014976May 7, 2025 2:29 PM
463Insider Transaction0001437749-25-014975May 7, 2025 2:28 PM
473Insider Transaction0001437749-25-014974May 7, 2025 2:28 PM
488-KCurrent Report0000943374-25-000192May 6, 2025 9:19 PM
494Insider Transaction0001437749-25-014685May 6, 2025 4:24 PM
50CERTOthers0001354457-25-000369May 1, 2025 4:45 PM

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