GLSI insider buying
1 cluster buyGreenwich LifeSciences, Inc.
When two or more insiders at Greenwich LifeSciences, Inc. buy GLSI in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in GLSI 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
- Apr 1, 2024 – Apr 25, 2025Detected Apr 25, 2025Executive buyer3 insidersTotal bought$3.1MMarket cap$300.0M
All notable open-market buys in GLSI
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 |
|---|---|---|---|---|---|
| Jul 29, 2026 | Director, CEO and CFO, 10% Owner | 700 | $13.10 | $9.2K | SEC ↗ |
| Jul 28, 2026 | Director, CEO and CFO, 10% Owner | 1,500 | $13.59 | $20.4K | SEC ↗ |
| Jul 27, 2026 | Director, CEO and CFO, 10% Owner | 1,500 | $13.62 | $20.4K | SEC ↗ |
| Jul 24, 2026 | Director, CEO and CFO, 10% Owner | 1,100 | $12.88 | $14.2K | SEC ↗ |
| Jul 23, 2026 | Director, CEO and CFO, 10% Owner | 2,500 | $13.14 | $32.9K | SEC ↗ |
| Jan 13, 2026 | Director, CEO and CFO, 10% Owner | 1,800 | $29.83 | $53.7K | SEC ↗ |
| Jan 12, 2026 | Director, CEO and CFO, 10% Owner | 2,900 | $27.54 | $79.9K | SEC ↗ |
| Dec 31, 2025 | Director, CEO and CFO, 10% Owner | 4,300 | $21.36 | $91.8K | SEC ↗ |
| Dec 30, 2025 | Director, CEO and CFO, 10% Owner | 2,900 | $21.73 | $63.0K | SEC ↗ |
| Dec 18, 2025 | Director, CEO and CFO, 10% Owner | 4,100 | $12.62 | $51.7K | SEC ↗ |
| Nov 25, 2025 | Director, CEO and CFO, 10% Owner | 4,600 | $8.37 | $38.5K | SEC ↗ |
| Nov 7, 2025 | Director, CEO and CFO, 10% Owner | 10,600 | $8.43 | $89.4K | SEC ↗ |
| Oct 31, 2025 | Director, CEO and CFO, 10% Owner | 2,300 | $9.26 | $21.3K | SEC ↗ |
| Apr 25, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 3,600 | $9.88 | $35.6K | SEC ↗ |
| Apr 17, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 5,400 | $8.98 | $48.5K | SEC ↗ |
| Apr 7, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 3,600 | $9.10 | $32.8K | SEC ↗ |
| Apr 4, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 5,500 | $8.73 | $48.0K | SEC ↗ |
| Jan 10, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 2,500 | $12.51 | $31.3K | SEC ↗ |
| Jan 7, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 1,800 | $13.75 | $24.8K | SEC ↗ |
| Jan 6, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 1,100 | $13.31 | $14.6K | SEC ↗ |
| Jan 3, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 3,400 | $12.95 | $44.0K | SEC ↗ |
| Jan 2, 2025 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 2,000 | $11.97 | $23.9K | SEC ↗ |
| Dec 31, 2024 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 2,400 | $11.36 | $27.3K | SEC ↗ |
| Dec 30, 2024 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 3,200 | $11.12 | $35.6K | SEC ↗ |
| Nov 21, 2024 | Thompson Jayecluster VP Clinical Reg Affairs | 1,000 | $12.91 | $12.9K | SEC ↗ |
GLSI insider buying — FAQ
- Are insiders buying GLSI stock?
- Yes — 3 distinct insiders have bought GLSI (Greenwich LifeSciences, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Jul 30, 2026.
- How much GLSI stock have insiders bought?
- Insiders have bought a combined $3.7M of GLSI across 34 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in GLSI?
- A cluster buy is two or more distinct Greenwich LifeSciences, Inc. insiders — officers, directors, or 10% owners — each buying GLSI on the open market within a rolling window. GLSI has 1 detected cluster buy to date.
- Where does this GLSI 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 GLSI
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 GLSI within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding GLSI.