[Form 4] Heartflow, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Heartflow, Inc.’s Chief Accounting Officer, Marie L. Jones, reported routine tax-related share dispositions. On two dates, a total of 567 shares of Common Stock were retained by Heartflow to satisfy income tax withholding tied to vesting of previously reported restricted stock units.

These Form 4 entries reflect tax-withholding dispositions rather than open-market sales, so they do not indicate active trading decisions. After these transactions, Jones directly holds 31,083 shares of Heartflow common stock.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Jones Marie L.

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock.	82	$29.98	$2K
Tax Withholding	Common Stock.	485	$30.29	$15K

Holdings After Transaction: Common Stock. — 31,083 shares (Direct, null)

Footnotes (1)

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Key Figures

Tax-withheld shares total: 567 shares First tax-withholding block: 82 shares at $29.98/share Second tax-withholding block: 485 shares at $30.29/share +1 more

4 metrics

Tax-withheld shares total 567 shares Shares retained by issuer for income tax withholding on RSU vesting

First tax-withholding block 82 shares at $29.98/share Common Stock withheld on 2026-05-07

Second tax-withholding block 485 shares at $30.29/share Common Stock withheld on 2026-05-06

Shares owned after transactions 31,083 shares Direct Heartflow common stock ownership following tax-withholding dispositions

Key Terms

restricted stock units, income tax withholding, net settlement

3 terms

restricted stock units financial

"in connection with the vesting and net settlement of restricted stock units previously reported"

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.

income tax withholding financial

"retained by the Issuer to satisfy income tax withholding and remittance obligations"

net settlement financial

"in connection with the vesting and net settlement of restricted stock units previously reported"

Form 4 Insider Transactions: What Each Field Means →

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^*

Jones Marie L.

(Last) (First) (Middle)

C/O HEARTFLOW, INC.

135 MAIN STREET, SUITE 1000

(Street)

SAN FRANCISCO CALIFORNIA 94105

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Heartflow, Inc. [ HTFL ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock.	05/06/2026		F		485(1)	D	$30.29	31,165	D
Common Stock.	05/07/2026		F		82(1)	D	$29.98	31,083	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares that have been retained by the Issuer to satisfy income tax withholding and remittance obligations in connection with the vesting and net settlement of restricted stock units previously reported.

	/s/ Nga Van, by power of attorney	05/08/2026
	** 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)

FAQ

What did Heartflow (HTFL) executive Marie L. Jones report on this Form 4?

Marie L. Jones reported tax-related dispositions where Heartflow retained 567 shares of common stock. These shares covered income tax withholding on vesting restricted stock units, so they were not open-market sales and do not reflect an active trading decision.

How many Heartflow (HTFL) shares were withheld for taxes in this filing?

A total of 567 Heartflow common shares were withheld to satisfy income tax obligations. These consist of 82 shares at $29.98 and 485 shares at $30.29, all connected to the vesting and net settlement of previously reported restricted stock units.

At what prices were the Heartflow (HTFL) tax-withholding shares valued?

The withheld Heartflow shares were valued at $29.98 and $30.29 per share. Specifically, 82 shares were priced at $29.98, and 485 shares at $30.29, reflecting the fair market values used to calculate the tax withholding obligation on vesting RSUs.

How many Heartflow (HTFL) shares does Marie L. Jones own after these transactions?

Following the reported tax-withholding dispositions, Marie L. Jones directly holds 31,083 shares of Heartflow common stock. This post-transaction balance shows that the withheld 567 shares represent only a small portion of her overall direct equity position in the company.

Were these Heartflow (HTFL) transactions open-market sales by the executive?

No, these were not open-market sales. The filing states the shares were retained by Heartflow to cover income tax withholding from vesting restricted stock units. Such tax-withholding dispositions are mechanical and do not represent discretionary selling by the executive.