Revolution Medicines officer plans 4,830-share sale

An officer associated with Revolution Medicines filed a Rule 144 notice to sell 4,830 shares of RVMD common stock following RSU vesting.

Available on EDGAR 09/15/2026 - 06:08 PM EDT Accepted by SEC EDGAR 09/15/2026 - 06:08 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Revolution Medicines, Inc. (RVMD) is named in a notice that officer Margaret A. Horn has filed under Rule 144 for a proposed sale of common stock. The filing reports an intent to sell 4,830 shares of RVMD common stock on or after September 15, 2026, following RSU vesting for services rendered.

The notice also lists prior sales of RVMD common stock by Horn during the preceding three months, providing share counts and dollar amounts for each transaction. Jack Anders signed the notice as attorney-in-fact for Margaret A. Horn.

Key Figures

Proposed shares to be sold: 4,830 shares Reported amount for proposed sale: $984,209.10 Shares sold June 17, 2026: 29,600 shares +4 more

7 metrics

Proposed shares to be sold 4,830 shares Planned sale of RVMD common stock on or after September 15, 2026

Reported amount for proposed sale $984,209.10 Amount reported alongside the 4,830 shares of RVMD common stock

Shares sold June 17, 2026 29,600 shares Past three-month sales of RVMD common stock by Margaret A. Horn

Amount reported June 17, 2026 $4,739,679.28 Dollar amount reported with 29,600 shares of RVMD common stock

Shares sold June 16, 2026 3,575 shares Past three-month sales of RVMD common stock by Margaret A. Horn

Shares sold June 15, 2026 60,400 shares Past three-month sales of RVMD common stock by Margaret A. Horn

Amount reported June 15, 2026 $9,674,304.24 Dollar amount reported with 60,400 shares of RVMD common stock

Key Terms

Rule 144, RSU vesting, Attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

RSU vesting financial

"Common Stock | 09/15/2026 | RSU vesting | Issuer"

RSU vesting is the process by which restricted stock units — a promise by a company to give shares to an employee — become actual, owned shares over time or when certain goals are met. Investors care because vested shares can dilute existing ownership when issued, and the timing of vesting affects when employees can sell shares, which can influence share supply, insider selling patterns, and company incentives.

Attorney-in-fact regulatory

"Signature | Jack Anders, as Attorney-in-fact for Margaret A Horn"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filing disclose for Revolution Medicines (RVMD)?

The filing discloses that officer Margaret A. Horn filed a Rule 144 notice for a proposed sale of 4,830 shares of Revolution Medicines common stock, expected on or after September 15, 2026, in connection with RSU vesting for services rendered.

How many RVMD shares is Margaret A. Horn planning to sell under this Form 144?

Margaret A. Horn reports an intent to sell 4,830 shares of Revolution Medicines common stock, with the transaction date indicated as September 15, 2026, and notes the shares arise from RSU vesting for services rendered.

What prior Revolution Medicines (RVMD) share sales are reported for the past three months?

The notice lists prior sales of RVMD common stock by Margaret A. Horn over three dates: 29,600 shares on June 17, 2026; 3,575 shares on June 16, 2026; and 60,400 shares on June 15, 2026, each with associated dollar amounts reported.

Who is the person on whose behalf the RVMD Form 144 is filed?

The person is Margaret A. Horn, identified as an officer in relation to Revolution Medicines, Inc. The Form 144 is signed by Jack Anders acting as attorney-in-fact on her behalf.

Which broker is listed for the proposed RVMD share sale in this Form 144?

The broker listed is ETRADE Financial Corporation, located at 3 Edison Drive, Alpharetta, Georgia, in connection with the proposed sale of 4,830 shares of Revolution Medicines common stock on or after September 15, 2026.

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

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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	0001294192
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	Revolution Medicines, Inc.
SEC File Number	001-39219
Address of Issuer	700 Saginaw Drive Redwood City CALIFORNIA 94063
Phone	650-481-6801
Name of Person for Whose Account the Securities are To Be Sold	Horn Margaret A
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 Stock	ETRADE Financial Corporation 3 Edison Drive Alpharetta GA 30005	4830	984209.10	214336418	09/15/2026	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 Stock	09/15/2026	RSU vesting	Issuer			4830	09/15/2026	Services rendered

* 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
Margaret A Horn c/o Revolution Medicines, Inc. 700 Saginaw Drive Redwood City CA 94063	Common Stock	06/17/2026	29600	4739679.28
Margaret A Horn c/o Revolution Medicines, Inc. 700 Saginaw Drive Redwood City CA 94063	Common Stock	06/16/2026	3575	558126.50
Margaret A Horn c/o Revolution Medicines, Inc. 700 Saginaw Drive Redwood City CA 94063	Common Stock	06/15/2026	60400	9674304.24

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/31/2023
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	Jack Anders, as Attorney-in-fact for Margaret A Horn
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)