CytomX Therapeutics, Inc. (CTMX) ownership: Top institutional holder: FMR LLC ($150.19M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| FMR LLC | 31955637.00 | $150.19M | 2026-03-31 |
| Kynam Capital Management, LP | 15013093.00 | $70.56M | 2026-03-31 |
| BANK OF AMERICA CORP /DE/ | 10202785.00 | $47.95M | 2026-03-31 |
| PERCEPTIVE ADVISORS LLC | 10098824.00 | $47.46M | 2026-03-31 |
| Venrock Adviser, LLC | 9982124.00 | $46.92M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 8733118.00 | $41.05M | 2026-03-31 |
| Point72 Asset Management, L.P. | 7875390.00 | $37.01M | 2026-03-31 |
| VANGUARD GROUP INC | 8475584.00 | $36.11M | 2025-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 | |
| Sell | null | 2026-03-17 |
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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.