Comparable stake leader
Lane Bess
SEC ownership of Blaize Holdings, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001871638.
Disclosed value leader
Lane Bess
Comparable rows
50/50
Latest evidence
02 Aug 2026
- Public ticker
- BZAI, BZAIW on Nasdaq
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Lane Bess
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Lane Bess
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
02 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001871638
- Issuer location
- El Dorado Hills, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Blaize Holdings, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Lane Bess
Disclosed value leader
Lane Bess
Comparable rows
50/50
Latest evidence
02 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 11%
13D/G row: Lane Bess
Showing 1-8 of 50 holder rows.
Quick read
Lane Bess leads the comparable SEC ownership view at 11%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Lane Bess's linked filing trail.
Comparable ownership
Top 5
Lane Bess
11%
Bess Ventures & Advisory, LLC
10%
Burtech LP LLC
9%
METEORA CAPITAL, LLC
6.4%
Munagala Dinakar
6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Lane Bess |
13D/G
3/4/5
Director
|
11%
|
$26,232,324
11,021,985 shares
|
+$3,570,000 | 13 May 2025 |
| Bess Ventures & Advisory, LLC |
3/4/5
13D/G
10%+ Owner · Lane Bess
|
10%
from 13D/G
|
$24,850,236
13,653,976 shares
|
— | 08 May 2026 |
| Burtech LP LLC |
13D/G
3/4/5
10%+ Owner
|
9%
|
$21,743,085
9,135,750 shares
|
$0 | 13 May 2025 |
| METEORA CAPITAL, LLC |
13D/G
|
6.4%
|
$9,710,963
947,411 shares
|
$0 | 31 Dec 2024 |
| Munagala Dinakar |
13D/G
3/4/5
Chief Executive Officer, Director
|
6%
|
$11,388,959
9,259,316 shares
|
+$1,492,510 | 02 Aug 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
5.1%
from 13D/G
|
$10,273,583
5,644,826 shares
|
— | 31 Mar 2026 |
| Temasek Holdings (Private) Ltd |
13D/G
13F
Temasek Holdings (Private) Limited · Company
|
5%
|
$10,759,608
5,517,182 shares
|
-$1,630,057 | 23 Jan 2026 |
| Ava Investors SA |
3/4/5
13D/G
10%+ Owner · Ava Investors S.A.
|
4.9%
from 13D/G
|
$22,887,645
11,737,254 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$949,531.
Buys
$0
Insiders: 0
Sells
$949,531
Insiders: 3
Net
-$949,531
Shares: -495,287
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 495,287
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 231,218 | $0 | $373,543 | -$373,543 |
| 3-6 | 0 | 264,069 | $0 | $575,989 | -$575,989 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to Blaize Holdings, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
Bess Ventures & Advisory, LLC
Net 12M change
-$949,531
Latest report
12 Jul 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Bess Ventures & Advisory, LLC | 10%+ Owner | $24,850,236 | Mixed | 08 May 2026 | ||
| Lane Bess | Director | $24,125,066 | Mixed | 07 Jul 2026 | ||
| Ava Investors SA | 10%+ Owner | $22,887,645 | Mixed | 31 Mar 2026 | ||
| Ava Private Markets S.a r.l. | 10%+ Owner | $22,887,645 | Mixed | 31 Mar 2026 | ||
| Raphaelle Mahieu | 10%+ Owner | $22,887,645 | Mixed | 31 Mar 2026 | ||
| Munagala Dinakar | Chief Executive Officer, Director | $8,419,208 | -$127,000 | -1.5% | Mixed | 17 Apr 2026 |
| Harminder Sehmi | Chief Financial Officer | $1,189,015 | -$491,031 | -29% | Mixed | 01 Jul 2026 |
| Juergen Hambrecht | Director | $1,083,245 | Mixed | 03 Dec 2025 | ||
| Edward H. Frank | Director | $1,083,245 | Mixed | 03 Dec 2025 | ||
| Yoshiaki Fujimori | Director | $485,110 | Mixed | 03 Dec 2025 | ||
| George de Urioste | Director | $485,110 | Mixed | 03 Dec 2025 | ||
| Anthony Cannestra | Director | $436,169 | -$331,500 | -43% | Mixed | 06 Jul 2026 |
| Kimberly Peterson Evans | General Counsel | $87,380 | Mixed | 01 Jun 2026 | ||
| Stephen Paul Patak | Chief Revenue Officer | $6,056 | Median | 12 Jul 2026 | ||
| Burtech LP LLC | 10%+ Owner | Mixed | 10 Dec 2021 | |||
| Roman Livson | Director | Mixed | 10 Dec 2021 | |||
| Joseph A. Porrello | Director | Mixed | 10 Dec 2021 | |||
| Isaac Chetrit | Director | Mixed | 10 Dec 2021 | |||
| Leon Golden | Director | Mixed | 10 Dec 2021 | |||
| Payel Farasat | Director | Mixed | 10 Dec 2021 |
Recent insider transactions for Blaize Holdings, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Stephen Paul Patak | BZAI | Common Stock | Tax liability | -12.2% | -609 | 4,391 | 12 Jul 2026 | Direct | ||
| Stephen Paul Patak | BZAI | Common Stock | Options Exercise | 100% | 2,500 | 5,000 | 12 Jul 2026 | Direct | ||
| Stephen Paul Patak | BZAI | Restricted Stock Units | Options Exercise | -14.3% | -2,500 | 15,000 | 12 Jul 2026 | Direct | ||
| Lane Bess | BZAI | Common Stock | Other | 16.1% | 2,000,000 | 14,446,783 | 07 Jul 2026 | By Bess Ventures and Advisory, LLC | ||
| Anthony Cannestra | BZAI | Common Stock | Sale | -100% | $67,500 | $1.35 | -50,000 | 0 | 06 Jul 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Options Exercise | 50,000 | 50,000 | 06 Jul 2026 | Direct | |||
| Anthony Cannestra | BZAI | Employee Stock Option (right to purchase) | Options Exercise | -80.4% | -50,000 | 12,169 | 06 Jul 2026 | Direct | ||
| Harminder Sehmi | BZAI | Common Stock | Sale | -13.5% | $55,634 | $1.37 | -40,609 | 259,773 | 01 Jul 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Sale | -100% | $84,000 | $1.68 | -50,000 | 0 | 08 Jun 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Options Exercise | 50,000 | 50,000 | 08 Jun 2026 | Direct | |||
| Anthony Cannestra | BZAI | Employee Stock Option (right to purchase) | Options Exercise | -44.6% | -50,000 | 62,169 | 08 Jun 2026 | Direct | ||
| Kimberly Peterson Evans | BZAI | Common Stock | Tax liability | -36% | -26,989 | 48,011 | 01 Jun 2026 | Direct | ||
| Kimberly Peterson Evans | BZAI | Common Stock | Options Exercise | 75,000 | 75,000 | 01 Jun 2026 | Direct | |||
| Kimberly Peterson Evans | BZAI | Restricted Stock Units | Options Exercise | -25% | -75,000 | 225,000 | 01 Jun 2026 | Direct | ||
| Harminder Sehmi | BZAI | Common Stock | Sale | -11.9% | $73,908 | $1.82 | -40,609 | 300,382 | 01 Jun 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Sale | -100% | $92,500 | $1.85 | -50,000 | 0 | 11 May 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Options Exercise | 50,000 | 50,000 | 11 May 2026 | Direct | |||
| Anthony Cannestra | BZAI | Employee Stock Option (right to purchase) | Options Exercise | -30.8% | -50,000 | 112,169 | 11 May 2026 | Direct | ||
| Lane Bess | BZAI | Common Stock | Other | 19.1% | 2,000,000 | 12,446,783 | 08 May 2026 | By Bess Ventures and Advisory, LLC | ||
| Bess Ventures & Advisory, LLC | BZAI | Common Stock | Other | 17.2% | 2,000,000 | 13,653,976 | 08 May 2026 | Direct | ||
| Harminder Sehmi | BZAI | Common Stock | Sale | -10.6% | $80,000 | $1.97 | -40,609 | 340,991 | 01 May 2026 | Direct |
| Harminder Sehmi | BZAI | Common Stock | Sale | -24.4% | $281,489 | $2.28 | -123,460 | 381,600 | 20 Apr 2026 | Direct |
| Harminder Sehmi | BZAI | Common Stock | Options Exercise | 505,060 | 505,060 | 20 Apr 2026 | Direct | |||
| Harminder Sehmi | BZAI | Employee Stock Option (right to purchase) | Options Exercise | -65.2% | -505,060 | 269,176 | 20 Apr 2026 | Direct | ||
| Dinakar Munagala | BZAI | Common Stock | Sale | -9.07% | $127,000 | $2.54 | -50,000 | 501,422 | 17 Apr 2026 | Direct |
| Stephen Paul Patak | BZAI | Common Stock | Options Exercise | 2,500 | 2,500 | 12 Apr 2026 | Direct | |||
| Stephen Paul Patak | BZAI | Restricted Stock Units | Options Exercise | -12.5% | -2,500 | 17,500 | 12 Apr 2026 | Direct | ||
| Anthony Cannestra | BZAI | Common Stock | Sale | -100% | $87,500 | $1.75 | -50,000 | 0 | 06 Apr 2026 | Direct |
| Anthony Cannestra | BZAI | Common Stock | Options Exercise | 50,000 | 50,000 | 06 Apr 2026 | Direct | |||
| Anthony Cannestra | BZAI | Employee Stock Option (right to purchase) | Options Exercise | -23.6% | -50,000 | 162,169 | 06 Apr 2026 | Direct | ||
| Ava Investors SA | BZAI | Common Stock | Other | -30.5% | -5,145,638 | 11,737,254 | 31 Mar 2026 | See footnotes | ||
| Ava Investors SA | BZAI | Common Stock | Other | -30.5% | -5,145,638 | 11,737,254 | 31 Mar 2026 | See footnotes | ||
| Ava Investors SA | BZAI | Common Stock | Other | -30.5% | -5,145,638 | 11,737,254 | 31 Mar 2026 | See footnotes | ||
| George de Urioste | BZAI | Common Stock | Award | 79.8% | 75,258 | 169,619 | 03 Dec 2025 | Direct | ||
| Anthony Cannestra | BZAI | Common Stock | Award | 24.8% | 75,258 | 379,085 | 03 Dec 2025 | Direct | ||
| Juergen Hambrecht | BZAI | Common Stock | Award | 24.8% | 75,258 | 378,757 | 03 Dec 2025 | Direct | ||
| Yoshiaki Fujimori | BZAI | Common Stock | Award | 79.8% | 75,258 | 169,619 | 03 Dec 2025 | Direct | ||
| Edward H. Frank | BZAI | Common Stock | Award | 24.8% | 75,258 | 378,757 | 03 Dec 2025 | Direct | ||
| Harminder Sehmi | BZAI | Stock Option | Award | 200,000 | 200,000 | 01 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.