Sung Lee - 22 Dec 2025 Form 4 Insider Report for CYTOKINETICS INC (CYTK)

Role
EVP, Chief Financial Officer
Signature
/s/ John O. Faurescu, attorney-in-fact for Mr. Lee
Issuer symbol
CYTK
Transactions as of
22 Dec 2025
Net transactions value
-$50,490
Form type
4
Filing time
29 Dec 2025, 16:03:39 UTC
Previous filing
05 Dec 2025
Next filing
06 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lee Sung EVP, Chief Financial Officer 350 OYSTER POINT BLVD, SOUTH SAN FRANCISCO /s/ John O. Faurescu, attorney-in-fact for Mr. Lee 29 Dec 2025 0001793200

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CYTK Common Stock Award $0 +2,152 +3.2% $0.000000 70,069 22 Dec 2025 Direct F1
transaction CYTK Common Stock Award $0 +2,152 +3.1% $0.000000 72,221 22 Dec 2025 Direct F2
transaction CYTK Common Stock Tax liability $50,490 -805 -1.1% $62.72 71,416 22 Dec 2025 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Performance shares earned upon achievement of performance goal. Shares remain subject to 1-year time vesting requirement.
F2 Performance shares earned upon achievement of performance goal. Shares vested immediately.
F3 Shares withheld for tax withholding upon vesting of performance shares.