Syndax Pharmaceuticals, Inc. (SNDX) ownership: Top institutional holder: BlackRock, Inc. ($192.82M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 8254426.00 | $192.82M | 2026-03-31 |
| Kynam Capital Management, LP | 8050959.00 | $188.07M | 2026-03-31 |
| VANGUARD GROUP INC | 6230334.00 | $130.90M | 2025-12-31 |
| GOLDMAN SACHS GROUP INC | 4996787.00 | $116.72M | 2026-03-31 |
| STATE STREET CORP | 4430076.00 | $103.49M | 2026-03-31 |
| BANK OF AMERICA CORP /DE/ | 4249836.00 | $99.28M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3822579.00 | $89.30M | 2026-03-31 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 3779900.00 | $88.30M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| 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 | |
| Sell | null | 2026-02-04 | |
| Sell | null | 2026-02-04 | |
| 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.