Backblaze, Inc.
Backblaze, Inc. (BLZE) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · BLZE · as of Sep 30, 2025
Ownership Breakdown
152
Institutional Holders
▲ 18 vs Q2
$278.24M
Total Inst. Value
▲ $130.28M vs Q2
60.01M
Shares Outstanding
freeFloat 94.38%
30.00M
13F Shares Held
▲ 3.10M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
BLZE largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-prepackaged software | 3.72M | 6.70% | 6.70% | $34.56B | Nov 12, 2025 | ▲ 132.8K |
AWM INVESTMENT COMPANY, INC. services-prepackaged software | 3.06M | 5.51% | 5.51% | $28.44B | Nov 13, 2025 | — held |
VANGUARD GROUP INC services-prepackaged software | 2.69M | 4.84% | 4.84% | $25.00B | Nov 7, 2025 | ▲ 134.0K |
WASATCH ADVISORS LP services-prepackaged software | 1.83M | 3.30% | 3.30% | $17.02B | Nov 14, 2025 | NEW |
WHETSTONE CAPITAL ADVISORS, LLC services-prepackaged software | 1.46M | 2.63% | 2.63% | $13.56B | Nov 14, 2025 | ▲ 265.9K |
GEODE CAPITAL MANAGEMENT, LLC services-prepackaged software | 1.29M | 2.32% | 2.32% | $11.96B | Nov 12, 2025 | ▲ 119.7K |
FIRST EAGLE INVESTMENT MANAGEMENT, LLC services-prepackaged software | 1.13M | 2.04% | 2.04% | $10.52B | Nov 12, 2025 | ▼ 23.6K |
STATE STREET CORP services-prepackaged software | 1.06M | 1.90% | 1.90% | $9.82B | Nov 14, 2025 | ▲ 215.2K |
CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. services-prepackaged software | 953.9K | 1.71% | 1.71% | $8.85B | Nov 13, 2025 | ▲ 159.3K |
MILLENNIUM MANAGEMENT LLC services-prepackaged software | 870.3K | 1.56% | 1.56% | $8.08B | Nov 14, 2025 | ▲ 99.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
26
Increased
+3.76M shares4
New Positions
first time holders15
Decreased
−720.7K shares0
Sold Out
fully exitedNet shares change (top 50)
+3.04M
+3.76M / −720.7K
Net new holders
+15
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
BLZE insider trading · insider activity
Source: SEC Form 4
3
Buy transactions
6
Sell transactions
0.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
NELSON BARBARA H director | May 26, 2026 | Award | 19,306 | — | — | 106.9K | Form 4 ↗ |
Carter Miller Jocelyn director | May 26, 2026 | Award | 19,306 | — | — | 122.9K | Form 4 ↗ |
FRY EARL E director | May 26, 2026 | Award | 19,306 | — | — | 118.3K | Form 4 ↗ |
D An Evelyn director | May 26, 2026 | Award | 19,306 | — | — | 118.3K | Form 4 ↗ |
Budman Gleb CEO and Chairperson | May 20, 2026 | Tax Withhold | 13,177 | $7.43 | $97.9K | 2.23M | Form 4 ↗ |
Budman Gleb CEO and Chairperson | May 20, 2026 | D-Return | 18,000 | $7.43 | $133.7K | 2.22M | Form 4 ↗ |
Budman Gleb CEO and Chairperson | May 20, 2026 | Tax Withhold | 13,256 | $7.43 | $98.5K | 2.23M | Form 4 ↗ |
Budman Gleb CEO and Chairperson | May 20, 2026 | D-Return | 18,000 | $7.43 | $133.7K | 2.22M | Form 4 ↗ |
Suidan Marc Chief Financial Officer | May 19, 2026 | Award | 2,500 | $3.68 | $9.2K | 381.0K | Form 4 ↗ |
Suidan Marc Chief Financial Officer | May 20, 2026 | Tax Withhold | 269 | $7.43 | $2.0K | 380.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Backblaze, Inc. (BLZE) is primarily owned by institutional investors, who hold approximately 50.0% of total shares outstanding. Company insiders own approximately 5.62%, while retail and public investors account for the remaining 44.39%.
The largest institutional shareholder of Backblaze, Inc. is BLACKROCK, INC., holding approximately 3.72 million shares — equal to 6.70% of outstanding shares — as of September 30, 2025.
A total of 152 institutional investors currently hold BLZE stock, with a combined institutional value of approximately $278,242,410 as of the most recent 13F filing period.
Frequently asked questions
BLZE ownershipBackblaze, Inc. (BLZE) is primarily owned by institutional investors, who hold approximately 50.0% of shares. The largest shareholder is BLACKROCK, INC. with a 6.70% stake. Company insiders hold 5.62%. Data sourced from SEC Form 13F as of September 30, 2025.