Latest Period
Q4 2025
Security Snapshot
Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share (WSBK) Institutional Ownership
CUSIP: 97269D103
13F Institutional Holders and Ownership History from Q2 2025 to Q1 2026
Institutions Reporting
22
Shares (Excl. Options)
841,277
Price
$10.45
- Type / Class
- Equity / Common Stock, $0.01 par value per share
- Symbol
- WSBK on Nasdaq
- Shares outstanding
- 9,295,376
- Price per share
- $12.70
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 841,277
- Total reported value
- $8,791,690
- % of total 13F portfolios
- 0%
- Share change
- +63,013
- Value change
- +$702,908
- Number of holders
- 22
- Price from insider filings
- $12.70
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- WSBK - Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share is tracked under CUSIP 97269D103.
- 22 institutions reported positions in Q4 2025.
- 1 significant owner is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 22 to 1 between Q4 2025 and Q1 2026.
- Reported value moved from $8,791,690 to $31,750.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Official SEC Source
Backed by Form 13F
Ownership context comes from SEC Form 13F and, when available, Schedule 13D/13G filings.
See Original FilingInvestment Quick Answers
What is CUSIP 97269D103?
CUSIP 97269D103 identifies WSBK - Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Continue Investment Research
- Latest 13F filings for new institutional portfolio disclosures.
- Latest Schedule 13D/13G reports for activist and beneficial ownership updates.
- Latest 10-Q/10-K reports to cross-check issuer fundamentals.
- Recent insider transactions for management buying/selling context.
- SEC investors directory and top value investors for manager-level discovery.
- All institutional ownership pages to compare adjacent CUSIP pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 97269D103:
Significant Owners of Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share (WSBK) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Winchester Bancorp, MHC | 55% | 5,112,457 | Winchester Bancorp, MHC | 30 Apr 2025 |
As of 31 Dec 2025, 22 institutional investors reported holding 841,277 shares of Winchester Bancorp, Inc./MD/ - Common Stock, $0.01 par value per share (WSBK). This represents 9.1% of the company’s total 9,295,376 outstanding shares.