Winchester Bancorp, Inc. Common Stock (WSBK) Insider Trading
Over the last 3 months, WSBK insiders made 6 open-market buys and 0 sales, a net purchase of $145K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 3 institutions increased and 3 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
6
Sells (3m)
0
Net (3m)
$145.3K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Jun
May
Context3-month price -2.9%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 27, 2026 | Merritt Edward Jdirector | Buy | 915 | $12.76 |
| May 22, 2026 | Carroll John Adirector, officer: President & CEO | Buy | 50 | $12.75 |
| May 8, 2026 | Snow John Ingalls IIIdirector | Buy | 1,525 | $12.79 |
| May 8, 2026 | Snow John Ingalls IIIdirector | Buy | 200 | $12.77 |
| May 6, 2026 | Snow John Ingalls IIIdirector | Buy | 6,110 | $12.87 |
| May 5, 2026 | Boodakian Stephen Harrydirector | Buy | 2,500 | $12.93 |
| Jun 10, 2025 | Hood William Prestondirector | Buy | 1,050 | $9.21 |
Source: WSBK SEC Form 4 filings, latest May 27, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their WSBK positions over the last 6 months (SEC Form 13F).
Increased
3
New positions
2
Reduced
3
Sold out
4
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| MANGROVE PARTNERS | Unchanged | 186K | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 182K | May 15, 2026 |
| NORTHSTAR FINANCIAL COMPANIES, INC. | Unchanged | 70K | May 5, 2026 |
| INTEGRATED WEALTH CONCEPTS LLC | Unchanged | 57K | May 15, 2026 |
| OPPENHEIMER & CLOSE, LLC | Unchanged | 50K | May 12, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 31K | May 14, 2026 |
| ALLIANCEBERNSTEIN L.P. | Unchanged | 25K | May 15, 2026 |
| M3F, INC. | Reduced | 25K | Apr 28, 2026 |
| VANGUARD FIDUCIARY TRUST CO | New Position | 23K | May 8, 2026 |
| RAYMOND JAMES FINANCIAL INC | Unchanged | 20K | May 14, 2026 |
| STEWARD PARTNERS INVESTMENT ADVISORY, LLC | Unchanged | 19K | May 8, 2026 |
| EAGLECLAW CAPITAL MANAGMENT, LLC | Unchanged | 16K | May 8, 2026 |
| LPL FINANCIAL LLC | Unchanged | 16K | May 6, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 14K | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 12K | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.