Updated Jul 16, 2026
BELVIN MARCIA is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market sales: $202K.
Marcia Belvin is the Senior Vice President and Chief Scientific Officer at CytomX Therapeutics, Inc., a biopharmaceutical company focused on developing cancer immunotherapies. She has been involved in the company's efforts to create novel biologics designed for targeted cancer treatment.
| Role | Insider |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-19 | CTMX | CytomX Therapeutics, Inc. | S — Open-market sale | 31.5K | $6.42 | $202K |
| 2026-02-04 | CTMX | CytomX Therapeutics, Inc. | A — Grant or award | 60.0K | $0.00 |
Marcia Belvin is the Senior Vice President and Chief Scientific Officer at CytomX Therapeutics, Inc., a biopharmaceutical company focused on developing cancer immunotherapies. She has been involved in the company's efforts to create novel biologics designed for targeted cancer treatment.…
Recorded transactions: 0 open-market purchases () and 1 open-market sales ($202K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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