Heartflow (HTFL) director reports 40,000-share insider purchase at $26.34

Rhea-AI Filing Summary

Heartflow, Inc. director Mr. Lightcap reported buying 40,000 shares of Heartflow common stock on 12/16/2025 in an open market purchase at a weighted average price of $26.342 per share. After this transaction, he holds 40,000 shares directly. The filing also lists additional indirect beneficial ownership through affiliated investment entities, including 4,615,542 shares held by HCPCIV 1, LLC, 833,075 shares held by HealthCor Partners Fund II, L.P., and 1,248,939 shares held by HealthCor Partners Fund, L.P., for which he is a controlling member and disclaims beneficial ownership beyond his economic interest.

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

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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^*

Lightcap Jeffrey C

(Last) (First) (Middle)

C/O HEARTFLOW, INC.

(Street)

MOUNTAIN VIEW CA 94041

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	12/16/2025		P		40,000	A	$26.342(1)	40,000	D
Common Stock								4,615,542	I	By HCPCIV 1, LLC(2)
Common Stock								833,075	I	By HealthCor Partners Fund II, L.P.(2)
Common Stock								1,248,939	I	By HealthCor Partners Fund, L.P.(2)

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. This transaction was executed in multiple trades at price ranging from $25.645 to $26.750. The price reported above reflects the weighted average purchase price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

2. Mr. Lightcap is a controlling member of each of HCPCIV 1, LLC, HealthCor Partners Fund II, L.P. and HealthCor Partners Fund, L.P. and may be deemed to have voting and dispositive power with respect to the shares. Mr. Lightcap disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

	/s/ Mhairi L. Jones, by power of attorney	12/17/2025
	** 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).
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FAQ

What insider transaction did Heartflow (HTFL) report in this Form 4?

The filing reports that director Mr. Lightcap purchased 40,000 shares of Heartflow, Inc. common stock on 12/16/2025 in an open market transaction.

At what price did the Heartflow (HTFL) director buy shares in this transaction?

The 40,000 Heartflow common shares were purchased at a weighted average price of $26.342 per share, based on multiple trades between $25.645 and $26.750.

How many Heartflow (HTFL) shares does the reporting person own directly after the reported trade?

Following the reported transaction, the director owns 40,000 Heartflow common shares in direct ownership.

What indirect Heartflow (HTFL) shareholdings are reported for the director?

The filing reports indirect beneficial ownership of 4,615,542 shares through HCPCIV 1, LLC, 833,075 shares through HealthCor Partners Fund II, L.P., and 1,248,939 shares through HealthCor Partners Fund, L.P..

How does the director describe his beneficial ownership of Heartflow (HTFL) shares held by the funds?

The director is a controlling member of the entities holding the shares and may be deemed to have voting and dispositive power, but he disclaims beneficial ownership of these securities except to the extent of his pecuniary interest.

What additional detail is provided about the Heartflow (HTFL) trade prices?

The filing states that the transaction was executed in multiple trades at prices ranging from $25.645 to $26.750, and that the reported price is a weighted average, with full trade details available upon request.