As of November 7, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Heartflow, Inc. The largest reported stake is BCLS Fund III Investments, LP's, at 9.8%. 14 filings are on record since November 5, 2025 (Schedule 13G/A, August 14, 2026).
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Key facts
- · Reporting person: BCLS Fund III Investments, LP · Sole voting: 0 · Shared voting: 8,448,158 · Sole dispositive: 0 · Shared dispositive: 8,448,158 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Wellington Management Group LLP · Sole voting: 0 · Shared voting: 7,531,447 · Sole dispositive: 0 · Shared dispositive: 7,864,226 · SCHEDULE 13G/A, 2026-08-13
- · Holder: Wellington Management Group LLP · Percent: 10.7% · SCHEDULE 13G/A
- · Reporting person: BlackRock, Inc. · Sole voting: 4,834,585 · Shared voting: 0 · Sole dispositive: 4,934,928 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-28
- · Holder: BCLS Fund III Investments, LP · Percent: 12.18% · SCHEDULE 13G/A
Heartflow, Inc. has 14 Schedule 13D or 13G filings on record since 2025-11-05. 4 holders' latest filing reports 5% or more of common stock, $0.001 par value per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BCLS Fund III Investments, LP | 9.8% | 8,448,158 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Wellington Management Group LLP | 9.1% | 7,864,226 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| Fmr LLC | 5.7% | 4,730,234 | SCHEDULE 13G, 2025-11-05 | 2025-09-30 |
| BlackRock, Inc. | 5.7% | 4,934,928 | SCHEDULE 13G, 2026-07-28 | 2026-06-30 |
| HealthCor Partners Management LP | 2.4% | 2,082,014 | SCHEDULE 13G, 2026-03-31 | 2026-03-24 |
| Hayfin Management Holdings Limited | 0.7% | 633,505 | SCHEDULE 13G/A, 2026-05-11 | 2026-02-06 |
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More on Heartflow, Inc. and the records around it.
Heartflow, Inc. elsewhere on the record
Companies that share a holder
- BCLS Fund III Investments, LP also filed stake reports on 3 other companies: ADARx Pharmaceuticals, Inc. (Oct 2026), CIDARA THERAPEUTICS, INC. (Feb 2026), DIANTHUS THERAPEUTICS, INC. (Nov 2025)
- Wellington Management Group LLP also filed stake reports on 240 other companies: Hub Group, Inc. (Oct 2026), Latham Group, Inc. (Oct 2026), Redwood Trust, Inc. (Oct 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
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What the Full Report on Heartflow, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BCLS Fund III Investments, LP | 0 | 8,448,158 | 0 | 8,448,158 | SCHEDULE 13G/A, 2026-08-14 |
| Wellington Management Group LLP | 0 | 7,531,447 | 0 | 7,864,226 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Group Holdings LLP | 0 | 7,531,447 | 0 | 7,864,226 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Investment Advisors Holdings LLP | 0 | 7,531,447 | 0 | 7,864,226 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Management Company LLP | 0 | 7,531,447 | 0 | 7,638,596 | SCHEDULE 13G/A, 2026-08-13 |
| BlackRock, Inc. | 4,834,585 | 0 | 4,934,928 | 0 | SCHEDULE 13G, 2026-07-28 |
The latest filing identifies Heartflow, Inc. by CUSIP 42238D107 and gives its principal executive office as 135 Main Street, Suite 1000, San Francisco, CA 94105 (SCHEDULE 13G/A, 2026-08-14).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-05 | Fmr LLC | 5.7% | SCHEDULE 13G |
| 2025-11-12 | Wellington Management Group LLP | 5.9% | SCHEDULE 13G |
| 2025-11-14 | Hayfin Management Holdings Limited | 6.2% | SCHEDULE 13G |
| 2025-11-14 | BCLS Fund III Investments, LP | 14.9% | SCHEDULE 13G |
| 2025-11-24 | HealthCor Partners Management LP | 7.9% | SCHEDULE 13G |
| 2026-02-10 | Wellington Management Group LLP | 6.9% | SCHEDULE 13G/A |
| 2026-03-05 | Wellington Management Group LLP | 14% | SCHEDULE 13G/A |
| 2026-03-31 | HealthCor Partners Management LP | 2.4% | SCHEDULE 13G |
| 2026-05-11 | Hayfin Management Holdings Limited | 0.7% | SCHEDULE 13G/A |
| 2026-05-15 | BCLS Fund III Investments, LP | 12.18% | SCHEDULE 13G/A |
| 2026-07-28 | BlackRock, Inc. | 5.7% | SCHEDULE 13G |
| 2026-08-06 | Wellington Management Group LLP | 10.7% | SCHEDULE 13G/A |
| 2026-08-13 | Wellington Management Group LLP | 9.1% | SCHEDULE 13G/A |
| 2026-08-14 | BCLS Fund III Investments, LP | 9.8% | SCHEDULE 13G/A |
Questions about who owns Heartflow, Inc.
Who owns Heartflow, Inc.?
On this page, 4 holders' latest ownership filings report 5% or more of Heartflow, Inc.: BCLS Fund III Investments, LP (9.8%, Schedule 13G/A, filed 2026-08-14), Wellington Management Group LLP (9.1%, Schedule 13G/A, filed 2026-08-13), Fmr LLC (5.7%, Schedule 13G, filed 2025-11-05) and BlackRock, Inc. (5.7%, Schedule 13G, filed 2026-07-28).
Who are the largest shareholders of Heartflow, Inc.?
By the share each holder's latest filing reports, the largest holders of Heartflow, Inc. on this page are BCLS Fund III Investments, LP (9.8%), Wellington Management Group LLP (9.1%) and Fmr LLC (5.7%).
When did BCLS Fund III Investments, LP buy into Heartflow, Inc.?
The filings give report dates, not purchase dates. The earliest filing from BCLS Fund III Investments, LP on this page is the Schedule 13G, filed 2025-11-14, reporting 14.9%; its latest, Schedule 13G/A filed 2026-08-14, reports 9.8%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 14 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Heartflow, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 8, 2025 | IPO filing, Form 424B4 | $19 a share | IPO filings | Source |
| August 6, 2025 | IPO filing, Form S-1/A | $17 to $18 a share | IPO filings | Source |
| August 1, 2025 | IPO filing, Form S-1/A | $15 to $17 a share | IPO filings | Source |
| July 17, 2025 | IPO filing, Form S-1 | — | IPO filings | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.