As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Qt Imaging Holdings, Inc. The largest reported stake is Alyeska Investment Group, L.P.'s, at 9.99%. 4 filings are on record since August 28, 2025 (Schedule 13G, February 17, 2026).
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Key facts
- · Reporting person: Alta Partners LLC · Sole voting: 540,842 · Shared voting: 0 · Sole dispositive: 540,842 · Shared dispositive: 540,842 · SCHEDULE 13G/A, 2026-05-08
- · Reporting person: Alyeska Investment Group, L.P. · Sole voting: 0 · Shared voting: 1,178,317 · Sole dispositive: 0 · Shared dispositive: 1,178,317 · SCHEDULE 13G, 2026-02-17
- · Reporting person: Lynrock Lake LP · Sole voting: 1,154,586 · Shared voting: 0 · Sole dispositive: 1,154,586 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-17
- · Holder: Alta Partners LLC · Percent: 5.6% · SCHEDULE 13G
Qt Imaging Holdings, Inc. has 4 Schedule 13D or 13G filings on record since 2025-08-28. 2 holders' latest filing reports 5% or more of common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 9.99% | 1,178,317 | SCHEDULE 13G, 2026-02-17 | 2025-12-31 |
| Lynrock Lake LP | 9.7% | 1,154,586 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| Alta Partners LLC | 4.3% | 540,842 | SCHEDULE 13G/A, 2026-05-08 | 2026-05-05 |
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More on Qt Imaging Holdings, Inc. and the records around it.
Qt Imaging Holdings, Inc. elsewhere on the record
Companies that share a holder
- Lynrock Lake LP also filed stake reports on 12 other companies: RADCOM LTD (Sep 2026), TechTarget, Inc. (Aug 2026), Yext, Inc. (Jul 2026)
- Alta Partners LLC also filed stake reports on 26 other companies: Robin Energy Ltd. (Oct 2026), Huachen AI Parking Management Technology Holding Co., Ltd (Oct 2026), C3is Inc. (Oct 2026)
- Alyeska Investment Group, L.P. also filed stake reports on 81 other companies: ABUNDIA GLOBAL IMPACT GROUP, INC. (Aug 2026), Bakkt, Inc. (Aug 2026), BATTALION OIL CORP (Aug 2026)
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What the Full Report on Qt Imaging Holdings, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 0 | 1,178,317 | 0 | 1,178,317 | SCHEDULE 13G, 2026-02-17 |
| Alyeska Fund GP, LLC | 0 | 1,178,317 | 0 | 1,178,317 | SCHEDULE 13G, 2026-02-17 |
| Anand Parekh | 0 | 1,178,317 | 0 | 1,178,317 | SCHEDULE 13G, 2026-02-17 |
| Lynrock Lake LP | 1,154,586 | 0 | 1,154,586 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Lynrock Lake Partners LLC | 1,154,586 | 0 | 1,154,586 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Paul Cynthia | 1,154,586 | 0 | 1,154,586 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Alta Partners LLC | 540,842 | 0 | 540,842 | 540,842 | SCHEDULE 13G/A, 2026-05-08 |
The latest filing identifies Qt Imaging Holdings, Inc. by CUSIP 746962109 and gives its principal executive office as 3 HAMILTON LANDING, SUITE 160, NOVATO, CA 94949 (SCHEDULE 13G/A, 2026-05-08).
What the percentages are based on
Percent of class as of December 31, 2025: Lynrock Lake LP - 9.7% Lynrock Lake Partners LLC - 9.7% Cynthia Paul - 9.7% Based on 11,902,198 shares of Common Stock, par value $0.0001 per share ("Common Stock"), of QT Imaging Holdings, Inc.Lynrock Lake LP, SCHEDULE 13G/A, 2026-02-17
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-28 | Alta Partners LLC | 5.6% | SCHEDULE 13G |
| 2026-02-17 | Lynrock Lake LP | 9.7% | SCHEDULE 13G/A |
| 2026-02-17 | Alyeska Investment Group, L.P. | 9.99% | SCHEDULE 13G |
| 2026-05-08 | Alta Partners LLC | 4.3% | SCHEDULE 13G/A |
Questions about who owns Qt Imaging Holdings, Inc.
Who owns Qt Imaging Holdings, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of Qt Imaging Holdings, Inc.: Alyeska Investment Group, L.P. (9.99%, Schedule 13G, filed 2026-02-17) and Lynrock Lake LP (9.7%, Schedule 13G/A, filed 2026-02-17).
Who are the largest shareholders of Qt Imaging Holdings, Inc.?
By the share each holder's latest filing reports, the largest holders of Qt Imaging Holdings, Inc. on this page are Alyeska Investment Group, L.P. (9.99%) and Lynrock Lake LP (9.7%).
When did Alyeska Investment Group, L.P. buy into Qt Imaging Holdings, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Alyeska Investment Group, L.P. on this page is the Schedule 13G, filed 2026-02-17, reporting 9.99%.
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%); 4 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.
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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.