SNDX insider buying
1 cluster buySyndax Pharmaceuticals Inc · Healthcare
When two or more insiders at Syndax Pharmaceuticals Inc buy SNDX 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 SNDX 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 16 – May 19, 2025Detected May 19, 2025High conviction3 insidersTotal bought$241.9KMarket cap$2.0B
All notable open-market buys in SNDX
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 |
|---|---|---|---|---|---|
| May 19, 2025 | Katkin Keithcluster Director | 10,000 | $9.11 | $91.1K | SEC ↗ |
| May 19, 2025 | Huber Martin H. Jr.cluster Director | 5,000 | $8.99 | $45.0K | SEC ↗ |
| May 16, 2025 | Botwood Nicholas A.J.cluster Head of R&D, CMO | 11,765 | $9.00 | $105.9K | SEC ↗ |
| Jun 14, 2024 | Chief Financial Officer | 1,250 | $20.03 | $25.0K | SEC ↗ |
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SNDX insider buying — FAQ
- Are insiders buying SNDX stock?
- Yes — 4 distinct insiders have bought SNDX (Syndax Pharmaceuticals 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 May 19, 2025.
- How much SNDX stock have insiders bought?
- Insiders have bought a combined $267.0K of SNDX across 4 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in SNDX?
- A cluster buy is two or more distinct Syndax Pharmaceuticals Inc insiders — officers, directors, or 10% owners — each buying SNDX on the open market within a rolling window. SNDX has 1 detected cluster buy to date.
- Where does this SNDX 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 SNDX
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 SNDX 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 SNDX.