Syndax Pharmaceuticals, Inc. (SNDX) ownership: insiders 2% · institutions 110% · index and ETF funds 5% (13F 2026-03-31). Insider activity, 90 days: Routine (1 sales, 0 open-market buys). SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 8254426.00 | $192.82M | 9.3% | 2026-03-31 |
| Kynam Capital Management, LP | 8050959.00 | $188.07M | 9.1% | 2026-03-31 |
| Vanguard | 6269334.00 | $146.45M | 7.1% | 2026-03-31 |
| Goldman Sachs | 4996787.00 | $116.72M | 5.6% | 2026-03-31 |
| State Street | 4430076.00 | $103.49M | 5.0% | 2026-03-31 |
| Bank of America | 4249836.00 | $99.28M | 4.8% | 2026-03-31 |
| Deerfield Management Company, L.P. | 3779900.00 | $88.30M | 4.3% | 2026-03-31 |
| Eversept Partners, LP | 2885622.00 | $67.41M | 3.3% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-08 | |
| Sell | null | 2026-07-08 | |
| Sell | null | 2026-07-08 | |
| Sell | null | 2026-02-09 | |
| Sell | null | 2026-02-09 | |
| Sell | null | 2026-02-06 | |
| Sell | null | 2026-02-06 | |
| Sell | null | 2026-02-04 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.