Andrew Callos - 30 Jul 2026 Form 4 Insider Report for CYTOKINETICS INC (CYTK)

Reporting relationship: EVP, Chief Commercial Officer
Issuer ticker: CYTK
Reported as of: 30 Jul 2026
Net transaction value: -$1,118,320
SEC form: 4
Accepted by SEC: 30 Jul 2026, 16:26:19 UTC
Prior SEC filing: 02 Jul 2026
Next SEC filing: 31 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ John O. Faurescu, attorney-in-fact for Mr. Callos

Key filing fact

Andrew Callos filed Form 4 for CYTOKINETICS INC (CYTK) on 30 Jul 2026.

Key facts

This page summarizes Andrew Callos's Form 4 filing for CYTOKINETICS INC (CYTK).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 30 Jul 2026, 16:26.

Change

Previous filing in this sequence was filed on 02 Jul 2026.
Current net transaction value: -$1,118,320.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001852129 Primary reporting owner

Callos Andrew

Relationship: EVP, Chief Commercial Officer
Address: 350 OYSTER POINT BLVD, SOUTH SAN FRANCISCO
Signature: /s/ John O. Faurescu, attorney-in-fact for Mr. Callos
Signature date: 30 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CYTK transaction

Common Stock

Options Exercise

Transaction value
Shares: +14,000
Change %: +24%
Price: $23.26^*
Shares after: 72,555
Date: 30 Jul 2026
Ownership: Direct

CYTK transaction

Common Stock

Sale

Transaction value: $1,118,320
Shares: -14,000
Change %: -19%
Price: $79.88
Shares after: 58,555
Date: 30 Jul 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CYTK transaction Derivative

Non-Qualified Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -14,000
Change %: -58%
Price: $0.000000^*
Shares after: 10,000
Date: 30 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14,000
Exercise price: $23.26
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

Stock options will vest over 4 years from the date of the grant, with 1/4th of the shares underlying the reporting person's option vesting on the one-year anniversary of the grant date and the remaining shares thereafter vesting monthly at a rate of 1/48th of the shares underlying the reporting person's option over the subsequent 36 months, subject to the reporting person's continued employment with the Issuer.