Heartflow officer files to sell 35,010 shares

Heartflow officer/director John C. M. Farquhar files a Rule 144 notice to sell 35,010 HTFL common shares acquired via stock option exercise.

Available on EDGAR 09/10/2026 - 04:33 PM EDT Accepted by SEC EDGAR 09/10/2026 - 04:32 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Heartflow, Inc. (HTFL) is the issuer for a Rule 144 notice filed on behalf of John C. M. Farquhar, identified as an officer/director, covering planned sales of common stock. The filing lists 35,010 shares of common stock to be sold, following their acquisition through a stock option exercise on June 25, 2024, with Fidelity Brokerage Services LLC as the broker. It also details multiple prior sales of Heartflow common stock by the same person during the past three months.

Key Figures

Shares to be sold: 35,010 shares Approximate date of sale: September 10, 2026 Prior sale on June 24, 2026: 38,900 shares for $1,361,500.00 +2 more

5 metrics

Shares to be sold 35,010 shares Common stock listed in the securities information and securities-to-be-sold sections

Approximate date of sale September 10, 2026 Date shown with the listed common stock under securities information

Prior sale on June 24, 2026 38,900 shares for $1,361,500.00 Common stock sold by John C. M. Farquhar during the past 3 months

Prior sale on August 18, 2026 32,676 shares for $1,470,420.00 Common stock sale listed in the past 3 months section

Prior sale on August 14, 2026 15,560 shares for $607,773.60 Common stock sale listed in the past 3 months section

Key Terms

Rule 144, stock option exercise, 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.

stock option exercise financial

"Common | 06/25/2024 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

attorney-in-fact regulatory

"as attorney-in-fact for John C M Farquhar"

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 Heartflow, Inc. (HTFL)?

The filing discloses that John C. M. Farquhar, identified as an officer/director of Heartflow, Inc., has filed a Rule 144 notice to sell 35,010 shares of HTFL common stock through Fidelity Brokerage Services LLC, based on shares acquired via stock option exercise.

How many HTFL shares are covered by the new Rule 144 notice?

The notice covers 35,010 shares of Heartflow, Inc. common stock. These shares are indicated as securities to be sold in the filing and are tied to a stock option exercise dated June 25, 2024.

How were the HTFL shares to be sold by John C. M. Farquhar acquired?

The shares were acquired via a stock option exercise from the issuer, Heartflow, Inc., on June 25, 2024. The filing notes the acquisition as a stock option exercise with the payment described as cash.

Which broker is listed for the planned HTFL share sales in this Form 144?

The broker listed is Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island. Fidelity is named in connection with the common stock covered by the Rule 144 filing.

What prior HTFL share sales by John C. M. Farquhar are disclosed in the last 3 months?

The filing lists several prior common stock sales, including 22,562 shares on July 10, 2026 for $626,095.50 and 32,676 shares on August 18, 2026 for $1,470,420.00, along with other transactions in June and August 2026.

What is the approximate date of sale for the HTFL shares under this Rule 144 notice?

The notice indicates an approximate date of sale of September 10, 2026 for the common stock covered by the Form 144 filing.

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	0001900415
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	Heartflow, Inc.
SEC File Number	001-42790
Address of Issuer	135 MAIN STREET, SUITE 1000 SAN FRANCISCO CALIFORNIA 94105
Phone	650-241-1221
Name of Person for Whose Account the Securities are To Be Sold	Farquhar John C.M.
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
Relationship to Issuer	Director

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	35010	1625104.29	86953627	09/10/2026	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	06/25/2024	Stock Option Exercise	Issuer			35010	06/25/2024	Cash

* 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
John C M Farquhar 135 Main Street Suite 1000 San Francisco CA 94105	Common	06/10/2026	22562	643017.00
John C M Farquhar 135 Main Street Suite 1000 San Francisco CA 94105	Common	06/24/2026	38900	1361500.00
John C M Farquhar 135 Main Street Suite 1000 San Francisco CA 94105	Common	07/10/2026	22562	626095.50
John C M Farquhar 135 Main Street, Suite 1000 San Francisco CA 94105	Common	08/10/2026	22562	638730.22
John C M Farquhar 135 Main Street, Suite 1000 San Francisco CA 94105	Common	08/14/2026	15560	607773.60
John C M Farquhar 135 Main Street Suite 1000 San Francisco CA 94105	Common	08/18/2026	32676	1470420.00
John C M Farquhar 135 Main Street Suite 1000 San Francisco CA 94105	Common	08/21/2026	27230	1361500.00

144: Remarks and Signature

Remarks
Date of Notice	09/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/12/2025
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/ Louis Kurnick, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John C M Farquhar
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)