Reporting Owner Activity for Robert Arthur Harrington

Form 3/4/5 issuer positions and transaction evidence for this reporting owner.

Issuer positions

1

Largest position

CYTOKINETICS INC

Disclosed value

$1.44M

Recent activity

Available

Identity
Location
South San Francisco, CA
SEC ownership signals
Ownership read

Disclosed holdings value

$1,435,585

Parsed Forms 3/4/5 holdings where value can be estimated.

Issuer positions

1

Distinct issuers linked to this reporting owner.

Largest parsed position

CYTOKINETICS INC (CYTK)

About $1.44M reported.

Latest ownership filing

27 May 2026

Most recent owner-level filing date in the parsed SEC record.

Values come from parsed SEC Forms 3/4/5 and should be verified against the source filing.

SEC record
Reporting signature
/s/ John Faurescu, attorney-in-fact for Dr. Harrington
SEC evidence

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Reported issuer positions for Robert Arthur Harrington

CYTK Forms 3/4/5

CYTOKINETICS INC

Relationship
Director
Holdings value
$1,435,585
Past year net change
-$248,261
Change %
-15%
Report period
27 May 2026

Insider Transactions Reported by Robert Arthur Harrington:

Sym Company Class Transaction % Reported value Reported price Shares Shares after Date Ownership
* indicates a reported price that failed the local validity check.
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