As of November 8, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Blaize Holdings Inc. The largest reported stake is Bess Ventures & Advisory, LLC's, at 9%. 15 filings are on record since July 11, 2025 (Schedule 13D/A, September 18, 2026).
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Key facts
- · Reporting person: BlackRock, Inc. · Sole voting: 8,907,311 · Shared voting: 0 · Sole dispositive: 9,056,200 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-27
- · Reporting person: Lane Bess · Sole voting: 185,234 · Shared voting: 12,836,751 · Sole dispositive: 185,234 · Shared dispositive: 12,836,751 · SCHEDULE 13D/A, 2026-09-18
- · Reporting person: Polar Asset Management Partners Inc. · Sole voting: 9,375,000 · Shared voting: 0 · Sole dispositive: 9,375,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-14
- · Reporting person: Munagala Dinakar · Sole voting: 9,259,316 · Shared voting: 0 · Sole dispositive: 9,259,316 · Shared dispositive: 0 · SCHEDULE 13D/A, 2026-08-04
- · Holder: BlackRock, Inc. · Percent: 5.1% · SCHEDULE 13G
Blaize Holdings Inc has 15 Schedule 13D or 13G filings on record since 2025-07-11. 4 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Layoffs on record: 1 filing or notice, latest 2026-09-30 (layoff filings and notices).
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Bess Ventures & Advisory, LLC | 9% | 12,446,783 | SCHEDULE 13D/A, 2026-09-18 | 2026-09-16 |
| BlackRock, Inc. | 6.3% | 9,056,200 | SCHEDULE 13G/A, 2026-10-27 | 2026-09-30 |
| 6% | 9,259,316 | SCHEDULE 13D/A, 2026-08-04 | 2026-08-02 | |
| Polar Asset Management Partners Inc. | 5.6% | 9,375,000 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Temasek Holdings (Private) Limited | 4.97% | 5,517,182 | SCHEDULE 13G/A, 2026-02-06 | 2026-01-23 |
| Ava Investors S.A. | 4.9% | 6,973,432 | SCHEDULE 13G/A, 2026-07-10 | 2026-06-30 |
| Boothbay Fund Management LLC | 0% | 0 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| DENSO International America, Inc | 0% | 0 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-26 |
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More on Blaize Holdings Inc and the records around it.
Blaize Holdings Inc elsewhere on the record
- Leadership changes Nov 2026
- Form D filing Nov 2025
- Who owns it
Companies that share a holder
- Boothbay Fund Management LLC also filed stake reports on 5 other companies: Sequans Communications S.A. (Nov 2025), Forte Biosciences, Inc. (Aug 2025), Renatus Tactical Acquisition Corp I (Aug 2025)
- Temasek Holdings (Private) Limited also filed stake reports on 8 other companies: Pasqal Holding SA (Oct 2026), Flywire Corporation (Jul 2026), Amber International Holding Limited (Jun 2026)
- Polar Asset Management Partners Inc. also filed stake reports on 69 other companies: Aeon Acquisition I Corp. (Aug 2026), Bitcoin Depot Inc. (Aug 2026), ACP Holdings Acquisition Corp. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Lane Bess | 185,234 | 12,836,751 | 185,234 | 12,836,751 | SCHEDULE 13D/A, 2026-09-18 |
| Bess Ventures & Advisory, LLC | 0 | 12,446,783 | 0 | 12,446,783 | SCHEDULE 13D/A, 2026-09-18 |
| Destin Huang Irrevocable Trust Dated October 19, 2021 | 0 | 389,968 | 0 | 389,968 | SCHEDULE 13D/A, 2026-09-18 |
| BlackRock, Inc. | 8,907,311 | 0 | 9,056,200 | 0 | SCHEDULE 13G/A, 2026-10-27 |
| Munagala Dinakar | 9,259,316 | 0 | 9,259,316 | 0 | SCHEDULE 13D/A, 2026-08-04 |
| Polar Asset Management Partners Inc. | 9,375,000 | 0 | 9,375,000 | 0 | SCHEDULE 13G, 2026-08-14 |
| Ava Investors S.A. | 0 | 6,973,432 | 0 | 6,973,432 | SCHEDULE 13G/A, 2026-07-10 |
| Ava Private Markets S.a r.l. | 0 | 6,973,432 | 0 | 6,973,432 | SCHEDULE 13G/A, 2026-07-10 |
| Raphaelle Mahieu | 0 | 0 | 0 | 6,973,432 | SCHEDULE 13G/A, 2026-07-10 |
| Benjamin Hazan | 0 | 0 | 0 | 6,973,432 | SCHEDULE 13G/A, 2026-07-10 |
The latest filing identifies Blaize Holdings Inc by CUSIP 092915107 and gives its principal executive office as 2890 Zanker Road, Suite 107, San Jose, CA 95134 (SCHEDULE 13G/A, 2026-10-27).
Purpose of Transaction (Item 4)
Bess Ventures & Advisory, LLC
The Reporting Persons acquired the securities of the Issuer for investment purposes. Reporting Persons or their affiliates may purchase additional securities or dispose of securities in varying amounts and at varying times depending upon Reporting Persons' continuing assessments of pertinent factors, including the availability of shares of Common Stock or other securities for purchase at particular price levels, the business prospects of the Issuer, other business investment opportunities, economic conditions, stock market conditions, money market conditions, the attitudes and actions of the board of directors (the "Board") and management of the Issuer, the availability and nature of opportunities to dispose of shares of the Issuer and other plans and requirements of the particular entities. The Reporting Persons may discuss items of mutual interest with the Issuer, which could include items in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Depending upon their assessments of the above factors, the Reporting Persons or their affiliates may change their present intentions as stated above and they may assess whether to make suggestions to the management of the Issuer regarding financing, and whether to acquire additional securities of the Issuer, including shares of Common Stock (by means of open market purchases, privately negotiated purchases, or otherwise) or to dispose of some or all of the securities of the Issuer, including shares of Common Stock, under their …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-09-18; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-11 | Dinakar Munagala | 5.4% | SCHEDULE 13D |
| 2025-11-03 | Dinakar Munagala | 6% | SCHEDULE 13D/A |
| 2025-11-14 | Boothbay Fund Management LLC | 0% | SCHEDULE 13G/A |
| 2026-02-06 | Temasek Holdings (Private) Limited | 4.97% | SCHEDULE 13G/A |
| 2026-03-24 | Munagala Dinakar | 6.2% | SCHEDULE 13D/A |
| 2026-04-02 | Ava Investors S.A. | 9.56% | SCHEDULE 13G/A |
| 2026-05-12 | Bess Ventures & Advisory, LLC | 9.2% | SCHEDULE 13D/A |
| 2026-05-15 | DENSO International America, Inc | 0% | SCHEDULE 13G/A |
| 2026-07-09 | Bess Ventures & Advisory, LLC | 10.4% | SCHEDULE 13D/A |
| 2026-07-10 | Ava Investors S.A. | 4.9% | SCHEDULE 13G/A |
| 2026-07-27 | BlackRock, Inc. | 5.1% | SCHEDULE 13G |
| 2026-08-04 | Munagala Dinakar | 6% | SCHEDULE 13D/A |
| 2026-08-14 | Polar Asset Management Partners Inc. | 5.6% | SCHEDULE 13G |
| 2026-09-18 | Bess Ventures & Advisory, LLC | 9% | SCHEDULE 13D/A |
| 2026-10-27 | BlackRock, Inc. | 6.3% | SCHEDULE 13G/A |
Questions about who owns Blaize Holdings Inc
Who owns Blaize Holdings Inc?
On this page, 4 holders' latest ownership filings report 5% or more of Blaize Holdings Inc: Bess Ventures & Advisory, LLC (9%, Schedule 13D/A, filed 2026-09-18), BlackRock, Inc. (6.3%, Schedule 13G/A, filed 2026-10-27), Munagala Dinakar (6%, Schedule 13D/A, filed 2026-08-04) and Polar Asset Management Partners Inc. (5.6%, Schedule 13G, filed 2026-08-14).
Who are the largest shareholders of Blaize Holdings Inc?
By the share each holder's latest filing reports, the largest holders of Blaize Holdings Inc on this page are Bess Ventures & Advisory, LLC (9%), BlackRock, Inc. (6.3%) and Munagala Dinakar (6%).
When did Bess Ventures & Advisory, LLC buy into Blaize Holdings Inc?
The filings give report dates, not purchase dates. The earliest filing from Bess Ventures & Advisory, LLC on this page is the Schedule 13D/A, filed 2026-05-12, reporting 9.2%; its latest, Schedule 13D/A filed 2026-09-18, reports 9%. That earliest filing is itself an amendment, which updates an earlier report.
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%); 15 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 Blaize Holdings Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| November 5, 2026 | Leadership change: Martin Costas appointed, Chief Operations Officer and Chief Financial Officer, and 2 more | — | Leadership changes | Source |
| November 18, 2025 | Form D, private offering | $30M 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.