Sung Lee Cytokinetics Inc (CYTK) insider trading activity

Sung Lee is EVP, Chief Financial Officer of CYTOKINETICS INC. Currently has a direct ownership of 67,917 shares of CYTK, which is worth approximately $4.51 Million. The most recent transaction as insider was on Dec 03, 2025, when has been sold 1,560 shares (Common Stock) at a price of $65.02 per share, resulting in proceeds of $101,431. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 67.9K

2.25% 3M change

81.35% 12M change

Total Value Held $4.51 Million

Sung Lee Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 03 2025	SELL Payment of exercise price or tax liability	$101,431 $65.02 p/Share	1,560 Reduced 2.25%	67,917 Common Stock
Jun 02 2025	SELL Payment of exercise price or tax liability	$154,957 $31.21 p/Share	4,965 Reduced 6.67%	69,477 Common Stock
Mar 14 2025	BUY Grant, award, or other acquisition	-	32,687 Added 30.51%	74,442 Common Stock
Dec 03 2024	SELL Payment of exercise price or tax liability	$79,119 $51.51 p/Share	1,536 Reduced 3.94%	37,451 Common Stock
Dec 03 2024	BUY Grant, award, or other acquisition	-	8,607 Added 17.09%	41,755 Common Stock
May 31 2024	BUY Grant, award, or other acquisition	-	34,684 Added 50.0%	34,684 Common Stock

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Sung Lee

EVP, Chief Financial Officer

Brisbane, CA

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