BLUM ROBERT I (President & CEO) sold 2.6% of their position (7.50K shares) of CYTOKINETICS INC on the open market

Open‑market sale worth $490.9K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

BLUM ROBERT I

Filed: 9/28/2026ACC: 0001061983-26-000097

InsiderBLUM ROBERT ICIK 1288859

→

IssuerCYTOKINETICS INCCIK 1061983

DirectorOfficer· President & CEO

Since Jul 2018

-7.50K

Net shares

Net seller

$490.9K

Total sold

Open market trades

0B · 1S

Total transactions

7.50K acquired · 15K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+7.50K

Price / share

$10.60

Trade value

$79.50K

% of position

2.7%

9/28/2026

278.54K→286.04K

Common Stock

Direct

S · Sale

−7.50K

Price / share

$65.46

Trade value

$490.95K

% of position

2.6%

9/28/2026

286.04K→278.54K

Total

Net shares

+0.00

Net value

-$411.45K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	9/28/2026	M · Option Exercise	+7.50K	$10.60	$79.50K	2.7%	278.54K	286.04K
Common Stock Direct	9/28/2026	S · Sale	−7.50K	$65.46	$490.95K	2.6%	286.04K	278.54K
Total			+0.00		-$411.45K

Derivative Transactions1

Non-Qualified Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

7.50K shares

−7.50K

Strike price

10.60

Held after

149.25K

Exercisable

—

9/28/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Non-Qualified Stock Option (Right to Buy) Direct	Common Stock7.50K shares	9/28/2026	M · Option Exercise	−7.50K	10.60	—	149.25K

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Indirect

Shares owned2.08K

Common Stock

Indirect

Shares owned2.08K

Common Stock

Indirect

Shares owned0.00

Total

4.17K indirect4.17K

Security Title	Shares Owned	Ownership Type
Common Stock	2.08K	Indirect
Common Stock	2.08K	Indirect
Common Stock	0.00	Indirect
Total	4.17K	4.17K indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported