BLUM ROBERT I (President & CEO) sold 105.43K shares of CYTOKINETICS INC on the open market

Open‑market sale worth $7.34M. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales

BLUM ROBERT I

Filed: 9/15/2026ACC: 0001061983-26-000094

InsiderBLUM ROBERT ICIK 1288859

→

IssuerCYTOKINETICS INCCIK 1061983

DirectorOfficer· President & CEO

Since Jul 2018

-106.78K

Net shares

Net seller

$7.34M

Total sold

Open market trades

0B · 2S

Total transactions

105.43K acquired · 212.20K disposed

Non-Derivative Transactions6

Common Stock

Direct

M · Option Exercise

+7.50K

Price / share

$10.60

Trade value

$79.50K

% of position

2.0%

9/14/2026

377.82K→385.32K

Common Stock

Direct

S · Sale

−7.50K

Price / share

$73.44

Trade value

$550.80K

% of position

1.9%

9/14/2026

385.32K→377.82K

Common Stock

Direct

G · Gift

−1.35K

Price / share

—

Trade value

—

% of position

0.4%

9/14/2026

377.82K→376.47K

Common Stock

Direct

G · Gift

−97.93K

Price / share

—

Trade value

—

% of position

26.0%

9/14/2026

376.47K→278.54K

Common Stock

Indirect

G · Gift

+97.93K

Price / share

—

Trade value

—

% of position

New position

9/14/2026

0.00→97.93K

Common Stock

Indirect

S · Sale

−97.93K

Price / share

$69.33

Trade value

$6.79M

% of position

New position

9/15/2026

97.93K→0.00

Total

Net shares

−99.28K

Net value

-$7.26M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	9/14/2026	M · Option Exercise	+7.50K	$10.60	$79.50K	2.0%	377.82K	385.32K
Common Stock Direct	9/14/2026	S · Sale	−7.50K	$73.44	$550.80K	1.9%	385.32K	377.82K
Common Stock Direct	9/14/2026	G · Gift	−1.35K	—	—	0.4%	377.82K	376.47K
Common Stock Direct	9/14/2026	G · Gift	−97.93K	—	—	26.0%	376.47K	278.54K
Common Stock Indirect	9/14/2026	G · Gift	+97.93K	—	—	New position	0.00	97.93K
Common Stock Indirect	9/15/2026	S · Sale	−97.93K	$69.33	$6.79M	New position	97.93K	0.00
Total			−99.28K		-$7.26M

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

156.75K

Exercisable

—

9/14/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Non-Qualified Stock Option (Right to Buy) Direct	Common Stock7.50K shares	9/14/2026	M · Option Exercise	−7.50K	10.60	—	156.75K

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned2.08K

Common Stock

Indirect

Shares owned2.08K

Total

4.17K indirect4.17K

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

Derivative Holdings (Post-Transaction)0

No derivative holdings reported