Marcia Belvin Cytom X Therapeutics, Inc. (CTMX) insider trading activity

Marcia Belvin is SVP, Chief Scientific Officer of CytomX Therapeutics, Inc.. Currently has a direct ownership of 272,252 shares of CTMX, which is worth approximately $647,959. The most recent transaction as insider was on Jun 16, 2025, when has been sold 13,884 shares (Common Stock) at a price of $2.69 per share, resulting in proceeds of $37,347. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 272K

9.5% 3M change

61.5% 12M change

Total Value Held $647,959

MARCIA BELVIN Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jun 16 2025	SELL Open market or private sale	$37,347 $2.69 p/Share	13,884 Reduced 4.85%	272,252 Common Stock
Jun 13 2025	BUY Exercise of conversion of derivative security	-	37,500 Added 11.59%	286,136 Common Stock
Mar 18 2025	SELL Open market or private sale	$11,707 $0.6 p/Share	19,512 Reduced 7.28%	248,636 Common Stock
Feb 04 2025	BUY Grant, award, or other acquisition	-	87,500 Added 24.95%	263,148 Common Stock
Aug 20 2024	SELL Open market or private sale	$5,142 $1.23 p/Share	4,181 Reduced 2.32%	175,648 Common Stock
Aug 20 2024	BUY Exercise of conversion of derivative security	-	11,250 Added 5.89%	179,829 Common Stock
Mar 19 2024	SELL Open market or private sale	$26,741 $2.09 p/Share	12,795 Reduced 7.05%	168,579 Common Stock
Jan 18 2024	BUY Grant, award, or other acquisition	-	26,250 Added 12.64%	181,374 Common Stock
Dec 20 2023	SELL Open market or private sale	$5,626 $1.38 p/Share	4,077 Reduced 2.56%	155,124 Common Stock
Dec 17 2023	BUY Exercise of conversion of derivative security	-	11,250 Added 6.6%	159,201 Common Stock
Sep 22 2023	SELL Open market or private sale	$5,354 $1.3 p/Share	4,119 Reduced 2.71%	147,951 Common Stock
Sep 20 2023	BUY Grant, award, or other acquisition	-	11,250 Added 6.89%	152,070 Common Stock
Mar 22 2023	BUY Grant, award, or other acquisition	-	60,000 Added 29.88%	140,820 Common Stock

Marcia Belvin

SVP, Chief Scientific Officer

South San Francisco, CA

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