Marcia Belvin
CIK 1970752 · View on SEC EDGAR ↗
First SEC filing: March 29, 2023 · Latest: March 29, 2023
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Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 22, 2023 | CTMX | A | 60,000 | — | — | 140,820 Direct | +74.24% | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 13 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 29, 2023 | CTMX | Common Stock | — | Direct |
| March 29, 2023 | CTMX | Performance Stock Units (PSUs)→ Common Stock (11,250) | 11,250 | Direct |
| March 29, 2023 | CTMX | Performance Stock Units (PSUs)→ Common Stock (22,500) | 22,500 | Direct |
| March 29, 2023 | CTMX | Performance Stock Units (PSUs)→ Common Stock (75,000) | 75,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (50,000) | 50,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (17,740) | 17,740 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (34,000) | 34,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (40,000) | 40,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (150,000) | 150,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (30,000) | 30,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (135,000) | 135,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (135,000) | 135,000 | Direct |
| March 29, 2023 | CTMX | Stock Option (Right to Buy)→ Common Stock (100,000) | 100,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
CTMX
SVP| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2023 | $459,827 | — | $402,250 | $169,270 | $170,000 | — | $5,000 | $1,206,347 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.