Cytokinetics (NASDAQ: CYTK) CEO trims stake with 7,500-share sale

Q: What indirect CYTK holdings related to Robert Blum are reported on the Form 4?

The Form 4 reports 2,083 CYTOKINETICS shares held by The Bridget Blum 2003 Irrevocable Trust and 2,083 shares held by The Brittany Blum 2003 Irrevocable Trust. These positions are classified as indirect ownership, each identified as held by a specific irrevocable trust.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Cytokinetics President & CEO Robert I. Blum reported an open-market sale of 7,500 shares of Cytokinetics common stock at $84.92 per share on July 1, 2026. After this sale, he directly holds 377,830 shares of common stock.

In addition to his direct holdings, there are indirect positions of 2,083 shares held by The Bridget Blum 2003 Irrevocable Trust and 2,083 shares held by The Brittany Blum 2003 Irrevocable Trust. These trust positions are reported as indirect ownership on the Form 4.

Insider Trade Summary 10b5-1

Net Seller: 7,500 shares ($636,900)

Net Sell 3 txns

Insider Blum Robert I

Role President & CEO

Sold 7,500 shs ($637K)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,500	$84.92	$637K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 377,830 shares (Direct, null); Common Stock — 2,083 shares (Indirect, by Trust 1)

Footnotes (1)

Shares held by The Bridget Blum 2003 Irrevocable Trust. Shares held by The Brittany Blum 2003 Irrevocable Trust.

Key Figures

Shares sold: 7,500 shares Sale price: $84.92 per share Direct holdings after transaction: 377,830 shares +3 more

6 metrics

Shares sold 7,500 shares Open-market sale of common stock on July 1, 2026

Sale price $84.92 per share Price for 7,500-share open-market sale

Direct holdings after transaction 377,830 shares Common stock held directly by CEO after sale

Bridget trust holdings 2,083 shares Shares held by The Bridget Blum 2003 Irrevocable Trust

Brittany trust holdings 2,083 shares Shares held by The Brittany Blum 2003 Irrevocable Trust

Net share change -7,500 shares Net buy/sell shares in transaction summary

Key Terms

open-market sale, indirect ownership, Irrevocable Trust, transaction code S

4 terms

open-market sale financial

"transaction_action: "open-market sale" for 7,500 common shares"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

indirect ownership financial

"direct_or_indirect: "I" and nature_of_ownership "by Trust 2""

Irrevocable Trust financial

"Shares held by The Bridget Blum 2003 Irrevocable Trust."

An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.

transaction code S financial

"transaction_code: "S" with description "Sale in open market""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/02/2026 - 05:20 PM Accepted by SEC EDGAR 07/02/2026 - 05:20 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Blum Robert I

(Last)

(First)

(Middle)

350 OYSTER POINT BLVD

(Street)

SOUTH SAN FRANCISCO

CALIFORNIA

94080

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CYTOKINETICS INC [ CYTK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/01/2026		S		7,500	D	$84.92	377,830	D
Common Stock								2,083	I	by Trust 1⁽¹⁾
Common Stock								2,083	I	by Trust 2⁽²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares held by The Bridget Blum 2003 Irrevocable Trust.

2. Shares held by The Brittany Blum 2003 Irrevocable Trust.

	/s/ John O. Faurescu, attorney-in-fact for Mr. Blum	07/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CYTOKINETICS INC (CYTK) report for Robert Blum?

CYTOKINETICS INC reported that President & CEO Robert I. Blum sold 7,500 shares of common stock in an open-market transaction at $84.92 per share on July 1, 2026, as disclosed in a Form 4 insider trading report.

How many CYTK shares did the CEO sell and at what price?

Robert I. Blum sold 7,500 shares of CYTOKINETICS common stock at $84.92 per share. The Form 4 describes this as an open-market sale transaction dated July 1, 2026, reflecting a single non-derivative sale entry for common stock.

How many CYTOKINETICS (CYTK) shares does the CEO hold after this transaction?

After the reported sale, Robert I. Blum directly holds 377,830 shares of CYTOKINETICS common stock. This post-transaction balance is shown in the Form 4 as the total non-derivative shares owned directly following the 7,500-share sale.

Was the CYTOKINETICS CEO transaction a buy or a sell of shares?

The Form 4 shows a sale of shares by CYTOKINETICS President & CEO Robert I. Blum. It records an open-market sale transaction coded “S” for 7,500 shares of common stock at $84.92 per share, reducing his directly held share count.

Does the CYTK Form 4 show any option exercises or derivative transactions?

The Form 4 does not report any option exercises or other derivative transactions. Its derivative transaction count is zero, and the only non-derivative transaction listed is the 7,500-share open-market sale of common stock at $84.92 per share.