Bain Capital Life Sciences Investors, LLC - 04 Feb 2026 Form 4 Insider Report for Heartflow, Inc. (HTFL)

Role: 10%+ Owner
Signature: See signatures included in Exhibit 99.1
Issuer symbol: HTFL
Transactions as of: 04 Feb 2026
Net transactions value: -$56,100,000
Form type: 4
Filing time: 06 Feb 2026, 16:58:06 UTC
Previous filing: 13 Aug 2025
SEC: View on sec.gov

Reporting Owners (5)

Name	Relationship	Address	Signature	Signature date	CIK
Bain Capital Life Sciences Investors, LLC	10%+ Owner	200 CLARENDON STREET, BOSTON	See signatures included in Exhibit 99.1	06 Feb 2026	0001703031
Bain Capital Life Sciences III General Partner, LLC	10%+ Owner	200 CLARENDON STREET, BOSTON	See signatures included in Exhibit 99.1	06 Feb 2026	0001952106
Bain Capital Life Sciences Fund III, L.P.	10%+ Owner	200 CLARENDON STREET, BOSTON	See signatures included in Exhibit 99.1	06 Feb 2026	0001875273
BCLS Fund III Investments GP, LLC	10%+ Owner	200 CLARENDON STREET, BOSTON	See signatures included in Exhibit 99.1	06 Feb 2026	0001952080
BCLS Fund III Investments, LP	10%+ Owner	200 CLARENDON STREET, BOSTON	See signatures included in Exhibit 99.1	06 Feb 2026	0001952107

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HTFL	Common Stock	Sale	$56,100,000	-2,000,000	-16%	$28.05	10,448,158	04 Feb 2026	See footnotes	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents securities held directly by BCLS Fund III Investments, LP ("BCLS Fund III Investments").
F2	Bain Capital Life Sciences Investors, LLC ("BCLSI") is the manager of Bain Capital Life Sciences III General Partner, LLC ("BCLS Fund III GP"), which is the general partner of Bain Capital Life Sciences Fund III, L.P. ("BCLS Fund III"), which is the managing member of BCLS Fund III Investments GP, LLC ("BCLS Fund III Investments GP"), which is the general partner of BCLS Fund III Investments. As a result, each of BCLSI, BCLS Fund III GP, BCLS Fund III and BCLS Fund III Investments GP may be deemed to share voting and dispositive power with respect to the securities held by BCLS Fund III Investments. BCLSI, BCLS Fund III GP, BCLS Fund III and BCLS Fund III Investments GP each disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

Content

Represents securities held directly by BCLS Fund III Investments, LP ("BCLS Fund III Investments").

Bain Capital Life Sciences Investors, LLC ("BCLSI") is the manager of Bain Capital Life Sciences III General Partner, LLC ("BCLS Fund III GP"), which is the general partner of Bain Capital Life Sciences Fund III, L.P. ("BCLS Fund III"), which is the managing member of BCLS Fund III Investments GP, LLC ("BCLS Fund III Investments GP"), which is the general partner of BCLS Fund III Investments. As a result, each of BCLSI, BCLS Fund III GP, BCLS Fund III and BCLS Fund III Investments GP may be deemed to share voting and dispositive power with respect to the securities held by BCLS Fund III Investments. BCLSI, BCLS Fund III GP, BCLS Fund III and BCLS Fund III Investments GP each disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.