$BLZE

$9.31 +$0.06 (0.65%) After hours

$BLZE Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 61.9M shares outstanding

Who owns BLZE?

By type of holder

Institutions 57.3% Insiders 0.0% Everyone else 42.7%

Concentration Top 10 holders own 30.9%

BlackRock, Inc. 7.6% · Driehaus Capital Management LLC 4.3%

Institutional ownership

57.3%

+10.4 pts vs last qtr

Institutional holders

167

+29 vs last qtr

Net shares bought

+6.4M

by institutions in Q2 2026

New / sold out

57 / 28

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Driehaus Capital Management LLC NEW +2.7M
BlackRock, Inc. +1.0M

Biggest sellers in Q2 2026

Whetstone Capital Advisors, LLC SOLD OUT −1.5M
D. E. Shaw & Co., Inc. −688.9K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Backblaze Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2020–FY2025

+202.0%

+24.74% a year

Each share's claim on the business

−66.9%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$1.98M vs $105M

over 6 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years45% 1–3 years29% Under 1 year26%

Quarterly turnover

32.9%

of institutional shares changed hands

Top 10 managers, median time held

3 years

Super Investors

Investment managers reporting BLZE on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	4.7M	7.63%	+1.0M (+28.2%)	2021	0.0%
Shares held by quarter Peak holding4.7M (Q2'26) Change over 8 quarters+1.9M Share of the company7.630% BlackRock, Inc.'s full portfolio →
DC Driehaus Capital Management LLC	2.7M	4.34%	NEW	Q2 '26	0.3%
Shares held by quarter Peak holding2.7M (Q2'26) Change over 8 quarters+2.7M Share of the company4.340% Driehaus Capital Management LLC's full portfolio →

BlackRock, Inc.

4.7M

% of company

7.63%

Change vs last qtr

+1.0M (+28.2%)

Held since

2021

Driehaus Capital Management LLC

2.7M

% of company

4.34%

Change vs last qtr

NEW

Held since

Q2 '26

28 more super investors behind a free account

See every manager holding Backblaze Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting BLZE on Form N-PORT; together they hold 16.4% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$28M	1.8M	2.86%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$24.5M	1.5M	2.49%	0.03%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$28M

% of company

2.86%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$24.5M

% of company

2.49%

% of the fund

0.03%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Backblaze Inc and how much of the fund the position is.

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