Comparable stake leader
BlackRock, Inc.
SEC ownership of Backblaze, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001462056.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
- Public ticker
- BLZE on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- BlackRock, Inc.
- Latest 13D/G holder
- BlackRock, Inc.
- Latest parsed ownership date
- 26 May 2026
- Issuer CIK
- 0001462056
- Issuer location
- San Francisco, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Backblaze, 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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.3%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 5.3%.
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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
5.3%
AWM Investment Company, Inc.
2.3%
Gleb Budman
3.6%
Marc Suidan
0.6%
Daniel Spraggins
0.38%
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
Company
|
5.3%
|
$12,882,755
2,888,510 shares
|
$0 | 31 Mar 2025 |
| AWM Investment Company, Inc. |
13F
13D/G
Company
|
2.3%
from 13D/G
|
$4,830,573
1,400,166 shares
|
— | 31 Mar 2026 |
| Gleb Budman |
3/4/5
CEO and Chairperson, Director
|
3.6%
|
$7,645,341
2,216,041 shares
|
— | 20 May 2026 |
| Marc Suidan |
3/4/5
Chief Financial Officer
|
0.6%
|
$1,251,352
362,711 shares
|
— | 19 May 2026 |
| Daniel Spraggins |
3/4/5
Senior VP of Engineering
|
0.38%
|
$1,091,465
234,220 shares
|
— | 10 Mar 2026 |
| Tina Cessna |
3/4/5
Senior VP, Engineering
|
0.3%
|
$1,413,536
184,776 shares
|
— | 20 Aug 2025 |
| Miller Jocelyn Carter |
3/4/5
Director
|
0.2%
|
$423,873
122,862 shares
|
— | 26 May 2026 |
| An Evelyn D. |
3/4/5
Director
|
0.19%
|
$408,159
118,307 shares
|
— | 26 May 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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 07 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to Backblaze, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
TMT INVESTMENTS PLC
Net 12M change
$0
Latest report
26 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| TMT INVESTMENTS PLC | 10%+ Owner | $26,128,598 | Mixed | 01 Sep 2023 | ||
| Kwok Hang Ng | 10%+ Owner | $14,017,056 | Mixed | 23 Feb 2023 | ||
| Brian K. Wilson | 10%+ Owner | $13,979,775 | Mixed | 23 Feb 2023 | ||
| Charles J. Jones | 10%+ Owner | $13,725,183 | Mixed | 23 Feb 2023 | ||
| Gleb Budman | CEO and Chairperson, Director | $7,645,341 | Median | 20 May 2026 | ||
| Timothy M. Nufire | Director | $7,459,020 | Mixed | 02 Jun 2023 | ||
| Whetstone Capital Advisors, LLC | 10%+ Owner | $5,692,410 | Mixed | 11 Nov 2021 | ||
| Tina Cessna | Senior VP, Engineering | $1,413,536 | Mixed | 20 Aug 2025 | ||
| Marc Suidan | Chief Financial Officer | $1,251,352 | Median | 19 May 2026 | ||
| Daniel Spraggins | Senior VP of Engineering | $1,091,465 | Mixed | 10 Mar 2026 | ||
| Francis P. Patchel | Chief Financial Officer | $956,180 | Filing P/S | 21 Aug 2024 | ||
| Jocelyn Carter-Miller | Director | $461,859 | Mixed | 27 May 2025 | ||
| Miller Jocelyn Carter | Director | $423,873 | Median | 26 May 2026 | ||
| An Evelyn D. | Director | $408,159 | Median | 26 May 2026 | ||
| Earl E. Fry | Director | $408,159 | Median | 26 May 2026 | ||
| Barbara H. Nelson | Director | $368,673 | Median | 26 May 2026 | ||
| Clal Insurance Enterprises Holdings Ltd | 10%+ Owner | Mixed | 16 Dec 2021 |
Recent insider transactions for Backblaze, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Barbara H. Nelson | BLZE | Class A Common Stock | Award | 22% | 19,306 | 106,862 | 26 May 2026 | Direct | ||
| Miller Jocelyn Carter | BLZE | Class A Common Stock | Award | 18.6% | 19,306 | 122,862 | 26 May 2026 | Direct | ||
| Earl E. Fry | BLZE | Class A Common Stock | Award | 19.5% | 19,306 | 118,307 | 26 May 2026 | Direct | ||
| An Evelyn D. | BLZE | Class A Common Stock | Award | 19.5% | 19,306 | 118,307 | 26 May 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Disposed to Issuer | -0.81% | -18,000 | 2,216,041 | 20 May 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -0.59% | -13,177 | 2,234,041 | 20 May 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Disposed to Issuer | -4.73% | -18,000 | 362,711 | 20 May 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -0.07% | -269 | 380,711 | 20 May 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Award | 0.66% | 2,500 | 380,980 | 19 May 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -0.17% | -3,833 | 2,247,218 | 14 May 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -0.67% | -2,555 | 378,480 | 14 May 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Award | 28.9% | 85,470 | 381,035 | 01 Apr 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Award | 6.04% | 128,205 | 2,251,051 | 01 Apr 2026 | Direct | ||
| Daniel Spraggins | BLZE | Class A Common Stock | Award | 234,220 | 234,220 | 10 Mar 2026 | Direct | |||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -4.86% | -15,106 | 295,565 | 27 Feb 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Award | 15.3% | 41,144 | 310,671 | 27 Feb 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -1.25% | -26,767 | 2,122,846 | 27 Feb 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Award | 3.6% | 74,602 | 2,149,613 | 27 Feb 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -2.78% | -7,721 | 269,527 | 20 Feb 2026 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -1% | -21,002 | 2,075,011 | 20 Feb 2026 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -2.38% | -6,708 | 274,748 | 20 Nov 2025 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -1.31% | -27,793 | 2,096,013 | 20 Nov 2025 | Direct | ||
| Gleb Budman | BLZE | Class A Common Stock | Tax liability | -0.95% | -20,468 | 2,123,806 | 20 Aug 2025 | Direct | ||
| Marc Suidan | BLZE | Class A Common Stock | Tax liability | -8.7% | -26,835 | 281,456 | 20 Aug 2025 | Direct | ||
| Tina Cessna | BLZE | Class A Common Stock | Tax liability | -3.36% | -6,428 | 184,776 | 20 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.