CYTK Form 144: Andrew Callos 10b5-1 resale notices

Morgan Stanley Smith Barney LLC filed a Form 144 disclosing resale notices for Common stock related to multiple 10b5-1 sales attributed to Andrew Callos.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC filed a Form 144 disclosing resale notices for Common stock related to multiple 10b5-1 sales attributed to Andrew Callos. The filing lists dated sales and per‑trade quantities with associated cash amounts, including 03/05/2026 sales of 15,000 and 11,000 shares.

Insights

Securities Counsel

Routine resale notices under Rule 144 documenting several 10b5-1 sales.

The filing lists multiple executed sales of Common stock under prearranged 10b5-1 plans, with individual trades showing share counts and gross cash amounts (for example, $928,062.00 for 03/05/2026). The notice is procedural and records transactions rather than new company actions.

Cash‑flow treatment and any proceeds recipients are explicit in the trade lines; the filing does not state additional conditions or changes to ownership limits. Subsequent filings or Form 4s would be needed to update post‑transaction positions.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does CYTK's Form 144 disclose about Andrew Callos?

It discloses multiple resale notices for Common stock executed under 10b5-1 plans. The filing lists dated trades with share counts and amounts, including 03/05/2026 sales of 15,000 and 11,000 shares and associated cash figures.

Are the transactions in CYTK's Form 144 open‑market sales or plan sales?

The filing identifies the trades as 10b5-1 sales. Each line is labeled as a 10b5-1 sale with trade dates, share quantities, and gross proceeds; the notice documents prearranged plan executions rather than ad hoc market purchases.

Does CYTK's Form 144 state who receives the sale proceeds?

Each trade line shows a cash amount but does not restate proceeds recipient separately. The filing records gross cash amounts per sale (for example, $928,062.00) without additional allocation or use-of-proceeds language in the excerpt.

Will CYTK’s Form 144 change reported ownership on its own?

No—Form 144 is a resale notice and does not by itself update post‑transaction holdings. Position changes are typically reflected in Form 4 or other ownership disclosures; this filing documents the sales that occurred under 10b5-1 arrangements.

Which dates and sizes are prominent in the CYTK Form 144 excerpt?

Multiple trades span late 2025 to March 2026. Notable entries include 01/05/2026 for 15,000 shares ($904,165.50) and 03/05/2026 trades of 15,000 and 11,000 shares with respective amounts shown.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/18/2026 - 04:31 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	0001852129
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CYTOKINETICS, INCORPORATED
SEC File Number	000-50633
Address of Issuer	350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CALIFORNIA 94080
Phone	6506243000
Name of Person for Whose Account the Securities are To Be Sold	ANDREW CALLOS
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	Officer

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	1930	119910.90	123162807	03/18/2026	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	03/14/2026	Restricted Stock Units	Issuer			1930	03/14/2026	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 ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	03/16/2026	1709	104300.27
ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	03/09/2026	2582	156779.04
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	03/05/2026	15000	928062.00
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	03/05/2026	11000	680639.30
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	03/02/2026	886	54595.32
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	02/05/2026	15000	928927.50
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	02/02/2026	886	55020.60
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	01/05/2026	15000	904165.50
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	01/02/2026	885	55896.60
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	01/02/2026	913	56689.45
10b5-1 Sales for ANDREW CALLOS 350 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080	Common	12/29/2025	1809	112953.96

144: Remarks and Signature

Remarks
Date of Notice	03/18/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/05/2025
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	/s/ Andrew Callos
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)