// company-profile
Syndax Pharmaceuticals Inc
SNDX// activity-summary
Recent insider activity is bullish. Over the last 30 days, 4 insiders purchased shares (net $590K) versus 2 sales. Buying was led by Botwood Nicholas A.J..
// 90-day insight
Over the last 90 days, Syndax Pharmaceuticals Inc insiders bought $743K (4 transactions) and sold $152K (2 transactions).
- Most active insider: Botwood Nicholas A.J. with 6 transactions totaling $1.9M.
- Largest single sale: $617K by Botwood Nicholas A.J. on Jun 11, 2026.
- 50% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Syndax Pharmaceuticals Inc as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 12, 2026 | Botwood Nicholas A.J. | SNDX | Option Exercise | 31,235 | $0.00 | $0K |
| Jun 12, 2026 | Botwood Nicholas A.J. | SNDX | Option Exercise | 31,235 | $13.82 | $432K |
| Jun 12, 2026 | Botwood Nicholas A.J. | SNDX | Sale10b5 | 31,235 | $18.14 | $567K |
| Jun 11, 2026 | Botwood Nicholas A.J. | SNDX | Sale10b5 | 34,280 | $18.00 | $617K |
| Jun 11, 2026 | Botwood Nicholas A.J. | SNDX | Option Exercise | 22,515 | $0.00 | $0K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Popular companies on Form4API
Browse insider trading activity for other actively-filed companies.