Ownership

Who owns Heartflow Inc, from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).

Stakes over 5%

Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.

BCLS Fund III Investments, LP August 14, 2026

BCLS Fund III Investments, LP: 9.8% · 8,448,158 shares

View filing (SCHEDULE 13G/A) Amendment #2

Wellington Management Group LLP, Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP August 13, 2026

Wellington Management Group LLP: 9.1% · 7,864,226 shares — Wellington Group Holdings LLP: 9.1% · 7,864,226 shares — Wellington Investment Advisors Holdings LLP: 9.1% · 7,864,226 shares

View filing (SCHEDULE 13G/A) Amendment #3

4 more 5% stakes behind a free account

See every investor who has disclosed crossing 5% of Heartflow Inc.

Super investors holding HTFL

Every institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of Heartflow Inc they hold. Together these 234 managers report 93.77% of shares outstanding.

Investor	Position value	Shares	% of their portfolio	% of company	As of
Bain Capital Life Sciences Investors, LLC	$248M	8,448,158	14.74%	9.72%	June 30, 2026
WELLINGTON MANAGEMENT GROUP LLP	$231M	7,864,226	0.04%	9.04%	June 30, 2026

232 more institutional holders behind a free account

See every manager reporting Heartflow Inc, how much of the company they hold, and how big the position is inside their own portfolio.

Funds holding HTFL

Funds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 236 funds hold 35.79% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.

Fund	Position value	% of net assets	% of company	As of
VANGUARD HEALTH CARE FUND	$169M	0.46%	6.51%	April 30, 2026
VANGUARD TOTAL STOCK MARKET INDEX FUND	$72.4M	0.00%	2.84%	June 30, 2026

234 more funds behind a free account

See every fund holding Heartflow Inc and what share of its net assets the position represents.