CYTK insider Robert Blum notifies planned sale of 44,990 shares (CYTK)

Rhea-AI Filing Summary

Robert Blum filed a Form 144 reporting proposed sales and recent 10b5-1 transactions in CYTK common stock. The notice lists a proposed sale of 44,990 shares tied to an exercise of stock options on 07/01/2026 and 7,510 shares from Restricted Stock Units dated 03/14/2025. The filing also records completed 10b5-1 sales of 7,500 shares on each of 04/15/2026, 04/29/2026, 05/14/2026, 05/27/2026, and 06/15/2026, with the proceeds for each sale shown in the excerpt.

Insights

Insider Transactions Analyst

Form 144 shows proposed option-related sales plus a sequence of 10b5-1 dispositions.

The filing lists a proposed sale of 44,990 shares associated with an exercise of stock options dated 07/01/2026 and 7,510 shares from Restricted Stock Units dated 03/14/2025. It separately records five completed 10b5-1 sales of 7,500 shares on specific dates in April–June 2026 with per‑trade proceeds shown.

These items are routine affiliate disclosures: the 10b5-1 label indicates prearranged trading plans. The excerpt provides per‑trade proceeds; other cash‑flow details or total post‑transaction holdings are not included in the provided text.

Key Figures

Proposed option-related shares: 44,990 shares RSU shares listed: 7,510 shares 10b5-1 sales (example): 7,500 shares +1 more

4 metrics

Proposed option-related shares 44,990 shares Exercise of Stock Options dated 07/01/2026

RSU shares listed 7,510 shares Restricted Stock Units dated 03/14/2025

10b5-1 sales (example) 7,500 shares Sale on 06/15/2026 with proceeds $528,484.50

10b5-1 sale proceeds (example) $584,433.75 Proceeds from 7,500 shares sold on 05/14/2026

Key Terms

10b5-1, Restricted Stock Units, Exercise of Stock Options

3 terms

10b5-1 regulatory

"10b5-1 Sales for ROBERT BLUM ... | Common | 06/15/2026 | 7500"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Restricted Stock Units financial

"Restricted Stock Units | Issuer | | | 7510 | 03/14/2025"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Exercise of Stock Options financial

"Exercise of Stock Options | Issuer | | | 44990 | 07/01/2026"

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Available on EDGAR 07/01/2026 - 04:55 PM Accepted by SEC EDGAR 07/01/2026 - 04:54 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	52500	4472475.00	124432565	07/01/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/01/2026	Exercise of Stock Options	Issuer			44990	07/01/2026	Cash
Common	03/14/2025	Restricted Stock Units	Issuer			7510	03/14/2025	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for ROBERT BLUM 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	06/15/2026	7500	528484.50
10b5-1 Sales for ROBERT BLUM 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	05/27/2026	7500	579065.25
10b5-1 Sales for ROBERT BLUM 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	05/14/2026	7500	584433.75
10b5-1 Sales for ROBERT BLUM 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	04/29/2026	7500	447176.25
10b5-1 Sales for ROBERT BLUM 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	04/15/2026	7500	490362.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Robert Blum's Form 144 for CYTK report?

It reports a proposed sale of 44,990 shares from an exercise of stock options (dated 07/01/2026) and 7,510 RSU shares (dated 03/14/2025). The filing also lists multiple completed 10b5-1 sales of 7,500 shares each.

Which dates show completed 10b5-1 sales in the filing for CYTK?

The excerpt lists completed 10b5-1 sales of 7,500 shares on 04/15/2026, 04/29/2026, 05/14/2026, 05/27/2026, and 06/15/2026, each with a proceeds figure shown next to the trade.

How many shares are tied to the option exercise reported in the Form 144?

The filing shows an option‑exercise line dated 07/01/2026 associated with 44,990 shares. The entry labels the method as an Exercise of Stock Options and lists the issuer as the source for those shares.

Does the excerpt show proceeds from the 10b5-1 sales for CYTK?

Yes. Each listed 7,500‑share 10b5-1 sale in the excerpt includes a proceeds amount (for example, $528,484.50 on 06/15/2026 and $584,433.75 on 05/14/2026).