WSBK insider buying
1 cluster buyWinchester Bancorp, Inc./MD/ · Financials
When two or more insiders at Winchester Bancorp, Inc./MD/ buy WSBK on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in WSBK plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- May 5 – Jun 10, 2025Detected Jun 10, 2025High conviction2 insidersTotal bought$495.0KMarket cap$120.9M
All notable open-market buys in WSBK
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Jun 10, 2025 | Hood William Prestoncluster Director | 1,050 | $9.21 | $9.7K | SEC ↗ |
| May 14, 2025 | Hood William Prestoncluster Director | 3,900 | $9.58 | $37.4K | SEC ↗ |
| May 14, 2025 | Hood William Prestoncluster Director | 800 | $9.60 | $7.7K | SEC ↗ |
| May 14, 2025 | Hood William Prestoncluster Director | 300 | $9.59 | $2.9K | SEC ↗ |
| May 8, 2025 | Hood William Prestoncluster Director | 5,200 | $9.65 | $50.2K | SEC ↗ |
| May 8, 2025 | Hood William Prestoncluster Director | 2,447 | $9.63 | $23.6K | SEC ↗ |
| May 8, 2025 | Hood William Prestoncluster Director | 2,353 | $9.65 | $22.7K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 4,356 | $9.70 | $42.3K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 2,596 | $9.65 | $25.1K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 839 | $9.69 | $8.1K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 500 | $9.68 | $4.8K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 424 | $9.67 | $4.1K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 300 | $9.69 | $2.9K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 300 | $9.66 | $2.9K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 297 | $9.62 | $2.9K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 288 | $9.68 | $2.8K | SEC ↗ |
| May 7, 2025 | Hood William Prestoncluster Director | 100 | $9.60 | $960.0 | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 5,073 | $9.80 | $49.7K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 4,466 | $9.75 | $43.5K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 4,000 | $9.74 | $39.0K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 2,771 | $9.78 | $27.1K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 2,747 | $9.82 | $27.0K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 2,222 | $9.73 | $21.6K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 1,652 | $9.75 | $16.1K | SEC ↗ |
| May 5, 2025 | Carroll John Acluster Director, President & CEO | 825 | $9.80 | $8.1K | SEC ↗ |
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WSBK insider buying — FAQ
- Are insiders buying WSBK stock?
- Yes — 2 distinct insiders have bought WSBK (Winchester Bancorp, Inc./MD/) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Jun 10, 2025.
- How much WSBK stock have insiders bought?
- Insiders have bought a combined $495.0K of WSBK across 27 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in WSBK?
- A cluster buy is two or more distinct Winchester Bancorp, Inc./MD/ insiders — officers, directors, or 10% owners — each buying WSBK on the open market within a rolling window. WSBK has 1 detected cluster buy to date.
- Where does this WSBK insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in WSBK
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy WSBK within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding WSBK.