Marcia Belvin

Companies

• CytomX Therapeutics, Inc.SVP, Chief Scientific Officer Mar 29, 2023 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CTCytomX Therapeutics, Inc. CTMX300,760 shares²$691.7K at $2.30Mar 17, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 17, 2026Sold 31,492 shares at $6.42 of CytomX Therapeutics, Inc.²
• Feb 2, 2026Granted 60,000 shares of CytomX Therapeutics, Inc.³
• Jun 16, 2025Sold 13,884 shares at $2.69 of CytomX Therapeutics, Inc.⁴
• Jun 13, 2025Exercised options 37,500 shares of CytomX Therapeutics, Inc.⁴
• Mar 18, 2025Sold 19,512 shares at $0.60 of CytomX Therapeutics, Inc.⁵
• Feb 4, 2025Granted 57,500 shares of CytomX Therapeutics, Inc.⁶
• Feb 4, 2025Granted 57,500 shares of CytomX Therapeutics, Inc.⁷
• Feb 4, 2025Granted 35,000 shares of CytomX Therapeutics, Inc.⁶
• Feb 4, 2025Granted 30,000 shares of CytomX Therapeutics, Inc.⁷
• Aug 20, 2024Sold 4,181 shares at $1.23 of CytomX Therapeutics, Inc.⁸
• Aug 20, 2024Exercised options 11,250 shares of CytomX Therapeutics, Inc.⁸
• Mar 19, 2024Sold 12,795 shares at $2.09 of CytomX Therapeutics, Inc.⁹
• Jan 18, 2024Granted 26,250 shares of CytomX Therapeutics, Inc.¹⁰
• Dec 20, 2023Sold 4,077 shares at $1.38 of CytomX Therapeutics, Inc.¹¹
• Dec 17, 2023Exercised options 11,250 shares of CytomX Therapeutics, Inc.¹²
• Sep 22, 2023Sold 4,119 shares at $1.30 of CytomX Therapeutics, Inc.¹³
• Sep 20, 2023Granted 11,250 shares of CytomX Therapeutics, Inc.¹³
• Mar 22, 2023Granted 60,000 shares of CytomX Therapeutics, Inc.¹⁴