Robert Arthur Harrington Cytokinetics Inc (CYTK) insider trading activity

Robert Arthur Harrington is Director of CYTOKINETICS INC. Currently has a direct ownership of 18,542 shares of CYTK, which is worth approximately $1.23 Million. The most recent transaction as insider was on Dec 01, 2025, when has been sold 2,150 shares (Common Stock) at a price of $66.8 per share, resulting in proceeds of $143,620. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 18.5K

9.52% 3M change

17.7% 12M change

Total Value Held $1.23 Million

Robert Arthur Harrington Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 01 2025	SELL Open market or private sale	$143,620 $66.8 p/Share	2,150 Reduced 10.39%	18,542 Common Stock
Oct 15 2025	BUY Grant, award, or other acquisition	$12,497 $62.8 p/Share	199 Added 0.95%	20,692 Common Stock
Sep 02 2025	SELL Open market or private sale	$104,640 $48.67 p/Share	2,150 Reduced 9.5%	20,493 Common Stock
Jul 15 2025	BUY Grant, award, or other acquisition	$12,467 $38.01 p/Share	328 Added 1.43%	22,643 Common Stock
May 14 2025	BUY Grant, award, or other acquisition	-	7,333 Added 24.73%	22,315 Common Stock
Apr 15 2025	BUY Grant, award, or other acquisition	$12,493 $38.56 p/Share	324 Added 2.12%	14,982 Common Stock
Apr 03 2025	SELL Open market or private sale	$17,743 $39.43 p/Share	450 Reduced 2.98%	14,658 Common Stock

Mar 04 2025	SELL Open market or private sale	$38,250 $42.5 p/Share	900 Reduced 5.62%	15,108 Common Stock
Jan 02 2025	BUY Grant, award, or other acquisition	$12,477 $48.93 p/Share	255 Added 1.57%	16,008 Common Stock
Oct 01 2024	BUY Grant, award, or other acquisition	$12,466 $52.6 p/Share	237 Added 1.48%	15,753 Common Stock
Jul 05 2024	SELL Open market or private sale	$13,816 $54.61 p/Share	253 Reduced 1.6%	15,516 Common Stock
Jul 01 2024	BUY Grant, award, or other acquisition	-	228 Added 1.43%	15,769 Common Stock
Jun 03 2024	SELL Open market or private sale	$76,851 $48.64 p/Share	1,580 Reduced 9.23%	15,541 Common Stock
May 15 2024	BUY Grant, award, or other acquisition	-	5,600 Added 24.65%	17,121 Common Stock
Jan 02 2024	BUY Grant, award, or other acquisition	$12,449 $84.12 p/Share	148 Added 1.27%	11,521 Common Stock
Oct 02 2023	BUY Grant, award, or other acquisition	$12,490 $27.88 p/Share	448 Added 3.79%	11,373 Common Stock
Jul 03 2023	BUY Grant, award, or other acquisition	$12,476 $33.36 p/Share	374 Added 3.31%	10,925 Common Stock
May 10 2023	BUY Grant, award, or other acquisition	-	5,000 Added 32.15%	10,551 Common Stock
Apr 03 2023	BUY Grant, award, or other acquisition	$11,237 $37.71 p/Share	298 Added 5.09%	5,551 Common Stock
Jan 03 2023	BUY Grant, award, or other acquisition	$11,220 $44.35 p/Share	253 Added 4.59%	5,253 Common Stock
May 10 2022	BUY Grant, award, or other acquisition	-	5,000 Added 50.0%	5,000 Common Stock

RAH

Robert Arthur Harrington

Director

South San Francisco, CA

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