Official SEC submissions

Winchester Bancorp SEC Filings

Winchester Bancorp (WSBK) SEC filings, periodic reports and insider submissions.

Direct answer

Winchester Bancorp's latest SEC filing is 8-K.

It was filed on July 30, 2026, and 32 recent filings are available.

Each row links directly to the SEC document and filing index.

Official SEC EDGAR submissions

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Recent SEC filings

8-K

Current report

Filed: 2026-07-30

Report date: 2026-07-30

8-K

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Insider transaction

Filed: 2026-05-27

Report date: 2026-05-26

FORM 4

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Insider transaction

Filed: 2026-05-22

Report date: 2026-05-21

FORM 4

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10-Q

Periodic report

Filed: 2026-05-13

Report date: 2026-03-31

10-Q

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Insider transaction

Filed: 2026-05-08

Report date: 2026-05-07

FORM 4

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Insider transaction

Filed: 2026-05-06

Report date: 2026-05-05

FORM 4

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Insider transaction

Filed: 2026-05-05

Report date: 2026-05-01

FORM 4

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8-K

Current report

Filed: 2026-04-29

Report date: 2026-04-29

8-K

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10-Q

Periodic report

Filed: 2026-02-11

Report date: 2025-12-31

10-Q

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8-K

Current report

Filed: 2026-01-28

Report date: 2026-01-28

8-K

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8-K

Current report

Filed: 2025-11-13

Report date: 2025-11-12

8-K

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10-Q

Periodic report

Filed: 2025-11-12

Report date: 2025-09-30

10-Q

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8-K

Current report

Filed: 2025-10-22

Report date: 2025-10-22

8-K

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DEF 14A

Proxy statement

Filed: 2025-10-10

Report date: 2025-11-12

DEF 14A

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8-K

Current report

Filed: 2025-09-17

Report date: 2025-09-17

8-K

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10-K

Periodic report

Filed: 2025-09-17

Report date: 2025-06-30

10-K

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8-K

Current report

Filed: 2025-07-30

Report date: 2025-07-30

8-K

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Insider transaction

Filed: 2025-06-10

Report date: 2025-06-10

FORM 4

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Insider transaction

Filed: 2025-05-15

Report date: 2025-05-14

FORM 4

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10-Q

Periodic report

Filed: 2025-05-12

Report date: 2025-03-31

10-Q

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Insider transaction

Filed: 2025-05-09

Report date: 2025-05-07

FORM 4

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8-K

Current report

Filed: 2025-05-06

Report date: 2025-04-30

WINCHESTER BANCORP, INC. FORM 8-K APRIL 30, 2025

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Insider transaction

Filed: 2025-05-06

Report date: 2025-05-05

FORM 4

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8-K

Current report

Filed: 2025-04-30

Report date: 2025-04-30

WINCHESTER BANCORP, INC. FORM 8-K APRIL 30, 2025

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8-K

Current report

Filed: 2025-04-30

Report date: 2025-04-29

WINCHESTER BANCORP, INC. FORM 8-K APRIL 29, 2025

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10-Q

Periodic report

Filed: 2025-03-27

Report date: 2024-12-31

10-Q

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8-K

Current report

Filed: 2025-03-21

Report date: 2025-03-21

8-K

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8-K

Current report

Filed: 2025-03-20

Report date: 2025-03-20

8-K

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8-K

Current report

Filed: 2025-02-18

Report date: 2025-02-11

8-K

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S-1/A

Registration statement

Filed: 2025-02-06

S-1/A

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S-1/A

Registration statement

Filed: 2025-01-28

S-1/A

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S-1

Registration statement

Filed: 2024-12-12

S-1

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Verified data

Recent filing categories: 5
Recent filings: 32
SEC CIK: 0002047235
Latest filing date: July 30, 2026

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