Winchester Bancorp, Inc.
Ownership
Ownership Structure
Who owns Winchester Bancorp, Inc. (WSBK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 42.2% of the shares are freely tradable; institutional investors hold 8.4%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Mangrove Partners | 2.08 | 186,201 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 2.00 | 178,941 | -1.4 | 06/30/2026 |
| Northstar Financial Companies, INC. | 0.78 | 70,000 | +0.0 | 06/30/2026 |
| Integrated Wealth Concepts LLC | 0.64 | 57,000 | +0.0 | 06/30/2026 |
| Oppenheimer & Close Inc | 0.56 | 50,000 | +0.0 | 06/30/2026 |
| Renaissance Technologies Corp | 0.35 | 31,400 | +1.3 | 06/30/2026 |
| Geode Capital Management, LLC | 0.32 | 29,037 | +108.6 | 06/30/2026 |
| RFG - Bristol Wealth Advisors, LLC | 0.31 | 27,500 | +170.7 | 09/30/2026 |
| AllianceBernstein L.P. | 0.28 | 24,656 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 1.47 | 132,140 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Hood William Preston | Director | 54,050 | 751,295 $ | Nov 4, 2026 | direct |
| Pierce Connolly Carole Ann | Director | 28,000 | 389,200 $ | Nov 4, 2026 | direct |
| Carson Deborah Anne | Director | 28,000 | 389,200 $ | Nov 4, 2026 | direct |
| Macdonald Alan George | Director | 23,000 | 319,700 $ | Nov 4, 2026 | direct |
| Snow John Ingalls III | Director | 22,735 | 316,017 $ | Nov 4, 2026 | direct |
| Salehpour Sara Perkins | Director | 13,000 | 180,700 $ | Nov 4, 2026 | direct |
| Curtis Geoffrey Adams | Director | 8,000 | 111,200 $ | Nov 4, 2026 | direct |
| Hood David Preston | Director | 7,000 | 97,300 $ | Nov 4, 2026 | direct |
| Cotter Paula Marie | Director | 5,500 | 76,450 $ | Nov 4, 2026 | direct |
| Harte Neal Joseph | Director | 3,000 | 41,700 $ | Nov 4, 2026 | direct |
| Boodakian Stephen Harry | Director | 3,000 | 41,700 $ | Nov 4, 2026 | direct |
| Merritt Edward J | Director | 3,000 | 41,700 $ | Nov 4, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Nov 4, 2026 | Snow John Ingalls III | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Salehpour Sara Perkins | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Macdonald Alan George | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Pierce Connolly Carole Ann | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Carson Deborah Anne | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Cotter Paula Marie | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Harte Neal Joseph | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Boodakian Stephen Harry | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Merritt Edward J | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Curtis Geoffrey Adams | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Hood William Preston | Director | Other | 3,000 | 13.64 | 40,920 |
| Nov 4, 2026 | Hood David Preston | Director | Other | 3,000 | 13.64 | 40,920 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 13, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.