GLSI insider buying
1 cluster buyGreenwich LifeSciences, Inc.
When two or more insiders at Greenwich LifeSciences, Inc. buy GLSI 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 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, 2025High conviction3 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 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 ↗ |
| Sep 26, 2024 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 1,500 | $14.63 | $21.9K | SEC ↗ |
| Aug 12, 2024 | Thompson Jayecluster VP Clinical Reg Affairs | 800 | $13.85 | $11.1K | SEC ↗ |
| Aug 6, 2024 | Patel Snehalcluster Director, CEO and CFO, 10% Owner | 2,000 | $13.81 | $27.6K | 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 27, 2026.
- How much GLSI stock have insiders bought?
- Insiders have bought a combined $3.7M of GLSI across 31 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. 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 GLSI.