As of November 7, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Outset Medical, Inc. The largest reported stake is BML Investment Partners, L.P.'s, at 14.7%. 19 filings are on record since July 17, 2025 (Schedule 13G/A, October 6, 2026).
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Key facts
- · Reporting person: BML Investment Partners, L.P. · Sole voting: 0 · Shared voting: 2,764,610 · Sole dispositive: 0 · Shared dispositive: 2,764,610 · SCHEDULE 13G/A, 2026-10-06
- · Reporting person: AQR Capital Management, LLC · Sole voting: 0 · Shared voting: 966,795 · Sole dispositive: 0 · Shared dispositive: 998,961 · SCHEDULE 13G, 2026-08-12
- · Reporting person: Bank Of America Corp · Sole voting: 0 · Shared voting: 666,542 · Sole dispositive: 0 · Shared dispositive: 666,587 · SCHEDULE 13G/A, 2026-08-12
- · Reporting person: BlackRock, Inc. · Sole voting: 365,556 · Shared voting: 0 · Sole dispositive: 365,556 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-29
- · Holder: BML Investment Partners, L.P. · Percent: 13.6% · SCHEDULE 13G/A
Outset Medical, Inc. has 19 Schedule 13D or 13G filings on record since 2025-07-17. 2 holders' latest filing reports 5% or more of common stock, par value $0.001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BML Investment Partners, L.P. | 14.7% | 2,764,610 | SCHEDULE 13G/A, 2026-10-06 | 2026-10-02 |
| AQR Capital Management, LLC | 5.39% | 998,961 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
| Bank Of America Corp | 3.5% | 666,596 | SCHEDULE 13G/A, 2026-08-12 | 2026-06-30 |
| PFM Health Sciences, LP | 2.9% | 530,796 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| BlackRock, Inc. | 2% | 365,556 | SCHEDULE 13G/A, 2026-07-29 | 2026-06-30 |
| Woodline Partners LP | 1.6% | 292,437 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
| T. Rowe Price Investment Management, Inc. | 0% | 2,399 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| Durable Capital Partners LP | 0% | 0 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| Alyeska Investment Group, L.P. | 0% | 0 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
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More on Outset Medical, Inc. and the records around it.
Outset Medical, Inc. elsewhere on the record
- Leadership changes Aug 2026
- Who owns it
Companies that share a holder
- PFM Health Sciences, LP also filed stake reports on 2 other companies: PMV Pharmaceuticals, Inc. (Aug 2025), Werewolf Therapeutics, Inc. (Aug 2025)
- Durable Capital Partners LP also filed stake reports on 13 other companies: Shift4 Payments, Inc. (Aug 2026), Goosehead Insurance, Inc. (Aug 2026), Colliers International Group Inc. (May 2026)
- BML Investment Partners, L.P. also filed stake reports on 15 other companies: LENZ Therapeutics, Inc. (Nov 2026), Seer, Inc. (Nov 2026), Connect Biopharma Holdings Ltd (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BML Investment Partners, L.P. | 0 | 2,764,610 | 0 | 2,764,610 | SCHEDULE 13G/A, 2026-10-06 |
| AQR Capital Management, LLC | 0 | 966,795 | 0 | 998,961 | SCHEDULE 13G, 2026-08-12 |
| AQR Capital Management Holdings, LLC | 0 | 966,795 | 0 | 998,961 | SCHEDULE 13G, 2026-08-12 |
| Bank Of America Corp | 0 | 666,542 | 0 | 666,587 | SCHEDULE 13G/A, 2026-08-12 |
| BlackRock, Inc. | 365,556 | 0 | 365,556 | 0 | SCHEDULE 13G/A, 2026-07-29 |
The latest filing identifies Outset Medical, Inc. by CUSIP 690145206 and gives its principal executive office as 3052 Orchard Dr., San Jose, CA 95134 (SCHEDULE 13G/A, 2026-10-06).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 5.5% | SCHEDULE 13G |
| 2025-07-29 | The Vanguard Group | 5.59% | SCHEDULE 13G |
| 2025-10-17 | BlackRock, Inc. | 6.8% | SCHEDULE 13G/A |
| 2025-11-14 | T. Rowe Price Investment Management, Inc. | 0% | SCHEDULE 13G/A |
| 2025-11-14 | Durable Capital Partners LP | 7.6% | SCHEDULE 13G/A |
| 2026-01-14 | BML Investment Partners, L.P. | 9.4% | SCHEDULE 13G |
| 2026-02-11 | Bank Of America Corp | 5.2% | SCHEDULE 13G |
| 2026-02-13 | BML Investment Partners, L.P. | 10.5% | SCHEDULE 13G/A |
| 2026-02-17 | PFM Health Sciences, LP | 2.9% | SCHEDULE 13G/A |
| 2026-02-17 | Durable Capital Partners LP | 0% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-12 | BML Investment Partners, L.P. | 11.8% | SCHEDULE 13G/A |
| 2026-05-15 | Woodline Partners LP | 1.6% | SCHEDULE 13G/A |
| 2026-05-15 | Alyeska Investment Group, L.P. | 0% | SCHEDULE 13G/A |
| 2026-05-18 | BML Investment Partners, L.P. | 13.6% | SCHEDULE 13G/A |
| 2026-07-29 | BlackRock, Inc. | 2% | SCHEDULE 13G/A |
| 2026-08-12 | Bank Of America Corp | 3.5% | SCHEDULE 13G/A |
| 2026-08-12 | AQR Capital Management, LLC | 5.39% | SCHEDULE 13G |
| 2026-10-06 | BML Investment Partners, L.P. | 14.7% | SCHEDULE 13G/A |
Questions about who owns Outset Medical, Inc.
Who owns Outset Medical, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of Outset Medical, Inc.: BML Investment Partners, L.P. (14.7%, Schedule 13G/A, filed 2026-10-06) and AQR Capital Management, LLC (5.39%, Schedule 13G, filed 2026-08-12).
Who are the largest shareholders of Outset Medical, Inc.?
By the share each holder's latest filing reports, the largest holders of Outset Medical, Inc. on this page are BML Investment Partners, L.P. (14.7%) and AQR Capital Management, LLC (5.39%).
When did BML Investment Partners, L.P. buy into Outset Medical, Inc.?
The filings give report dates, not purchase dates. The earliest filing from BML Investment Partners, L.P. on this page is the Schedule 13G, filed 2026-01-14, reporting 9.4%; its latest, Schedule 13G/A filed 2026-10-06, reports 14.7%.
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%); 19 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 Outset Medical, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 28, 2026 | Leadership change: John Brottem departs, General Counsel | — | Leadership changes | Source |
| May 29, 2026 | Leadership change: Marc Nash departs, Executive Vice President | — | Leadership changes | Source |
| January 21, 2025 | Form D, private offering | $3.89M sold | Form D page | 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.