Insider Transactions Reported by 16 Insiders of Backblaze, Inc.

Symbol: BLZE on Nasdaq
Location: San Francisco, CA

Quick Takeaways

BLZE - Backblaze, Inc. has 16 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Official SEC Source

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 11 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

Backblaze, Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	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	$10,489,897	Mixed	01 Apr 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
Marc Suidan	Chief Financial Officer	$1,775,623	Mixed	01 Apr 2026
Tina Cessna	Senior VP, Engineering	$1,413,536	Mixed	20 Aug 2025
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
Earl E. Fry	Director	$527,675	Mixed	27 May 2025
Jocelyn Carter-Miller	Director	$461,859	Mixed	27 May 2025
An Evelyn D.	Director	$441,544	Mixed	27 May 2025
Barbara H. Nelson	Director	$390,499	Mixed	27 May 2025
Clal Insurance Enterprises Holdings Ltd	10%+ Owner		Mixed	16 Dec 2021

Top shareholders of Backblaze, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
TMT INVESTMENTS PLC	3/4/5	10%+ Owner	— class O/S missing	3,594,030	$26,128,598	—	01 Sep 2023	3/4/5
BlackRock, Inc.	13F 13D/G	Company	5.3% from 13D/G	3,740,041	$17,428,591	—	31 Dec 2025	13F 13D/G
VANGUARD GROUP INC	13F	Company	5.4%	3,096,719	$14,430,710	—	31 Dec 2025	13F
AWM Investment Company, Inc.	13F 13D/G	Company	5.4% from 13D/G	3,067,569	$14,294,872	—	31 Dec 2025	13F 13D/G
Kwok Hang Ng	3/4/5	10%+ Owner	— mixed-class rows	2,495,449 mixed-class rows	$14,017,056	—	23 Feb 2023	3/4/5
Brian K. Wilson	3/4/5	10%+ Owner	— mixed-class rows	2,490,321 mixed-class rows	$13,979,775	—	23 Feb 2023	3/4/5
Charles J. Jones	3/4/5	10%+ Owner	— mixed-class rows	2,429,121 mixed-class rows	$13,725,183	—	23 Feb 2023	3/4/5
Gleb Budman	3/4/5	CEO and Chairperson, Director	3.9%	2,251,051	$10,489,897	—	01 Apr 2026	3/4/5
Pillsbury Lake Capital LLC	13F	Company	3%	1,729,132	$8,057,755	—	31 Dec 2025	13F
Timothy M. Nufire	3/4/5	Director	— class O/S missing	1,026,000	$7,459,020	—	02 Jun 2023	3/4/5
Whetstone Capital Advisors, LLC	13F 3/4/5	Company · 10%+ Owner	2.6%	1,520,055	$7,083,456	—	31 Dec 2025	13F 3/4/5
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.3%	1,341,863	$6,254,796	—	31 Dec 2025	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	2%	1,169,765	$5,444,000	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	1.8%	1,059,890	$4,939,087	—	31 Dec 2025	13F
Connor, Clark & Lunn Investment Management Ltd.	13F	Company	1.7%	955,643	$4,453,296	—	31 Dec 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	1.4%	810,752	$3,778,104	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.1%	652,675	$3,041,466	—	31 Dec 2025	13F
Qube Research & Technologies Ltd	13F	Company	1.1%	614,715	$2,864,572	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	1%	605,925	$2,823,610	—	31 Dec 2025	13F
Point72 Asset Management, L.P.	13F	Company	0.98%	567,803	$2,645,962	—	31 Dec 2025	13F
OBERWEIS ASSET MANAGEMENT INC/	13F	Company	0.96%	552,023	$2,572,427	—	31 Dec 2025	13F
PRELUDE CAPITAL MANAGEMENT, LLC	13F	Company	0.89%	516,311	$2,406,009	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.81%	469,066	$2,185,847	—	31 Dec 2025	13F
LOS ANGELES CAPITAL MANAGEMENT LLC	13F	Company	0.35%	200,422	$2,072,363	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	0.76%	440,647	$2,053,415	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.75%	431,173	$2,009,266	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.72%	418,270	$1,949,138	—	31 Dec 2025	13F
Marc Suidan	3/4/5	Chief Financial Officer	0.66%	381,035	$1,775,623	—	01 Apr 2026	3/4/5
GOLDMAN SACHS GROUP INC	13F	Company	0.65%	377,672	$1,759,952	—	31 Dec 2025	13F
Tina Cessna	3/4/5	Senior VP, Engineering	0.32%	184,776	$1,413,536	—	20 Aug 2025	3/4/5
P.A.W. CAPITAL CORP	13F	Company	0.52%	300,000	$1,398,000	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.52%	299,847	$1,397,287	—	31 Dec 2025	13F
GSA CAPITAL PARTNERS LLP	13F	Company	0.52%	299,218	$1,394,000	—	31 Dec 2025	13F
LAZARD ASSET MANAGEMENT LLC	13F	Company	0.52%	298,151	$1,389,384	—	31 Dec 2025	13F
CastleKnight Management LP	13F	Company	0.51%	293,300	$1,366,778	—	31 Dec 2025	13F
PERKINS CAPITAL MANAGEMENT INC	13F	Company	0.48%	278,775	$1,299,091	—	31 Dec 2025	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	0.47%	269,663	$1,256,630	—	31 Dec 2025	13F
TUDOR INVESTMENT CORP ET AL	13F	Company	0.47%	269,615	$1,256,406	—	31 Dec 2025	13F
NANO CAP NEW MILLENNIUM GROWTH FUND L P	13F	Company	0.43%	250,000	$1,165,000	—	31 Dec 2025	13F
Daniel Spraggins	3/4/5	Senior VP of Engineering	0.41%	234,220	$1,091,465	—	10 Mar 2026	3/4/5
MARSHALL WACE, LLP	13F	Company	0.39%	225,111	$1,049,017	—	31 Dec 2025	13F
Francis P. Patchel	3/4/5	Chief Financial Officer	— class O/S missing	148,245	$956,180	—	21 Aug 2024	3/4/5
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.36%	205,127	$955,891	—	31 Dec 2025	13F
Trexquant Investment LP	13F	Company	0.35%	204,280	$951,945	—	31 Dec 2025	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.34%	196,800	$917,088	—	31 Dec 2025	13F
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F	Company	0.33%	192,628	$897,646	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.33%	191,667	$893,167	—	31 Dec 2025	13F
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.	13F	Company	0.31%	180,184	$839,658	—	31 Dec 2025	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.31%	178,901	$833,679	—	31 Dec 2025	13F
UBS Group AG	13F	Company	0.3%	173,569	$808,831	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for Backblaze, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Shares	Shares Owned	Date	Ownership
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
Earl E. Fry	BLZE	Class A Common Stock	Award	34.2%	25,210	99,001	27 May 2025	Direct
An Evelyn D.	BLZE	Class A Common Stock	Award	34.2%	25,210	99,001	27 May 2025	Direct
Barbara H. Nelson	BLZE	Class A Common Stock	Award	40.4%	25,210	87,556	27 May 2025	Direct
Jocelyn Carter-Miller	BLZE	Class A Common Stock	Award	32.2%	25,210	103,556	27 May 2025	Direct
Tina Cessna	BLZE	Class A Common Stock	Tax liability	-3.46%	-6,858	191,204	20 May 2025	Direct
Gleb Budman	BLZE	Class A Common Stock	Tax liability	-0.91%	-19,583	2,144,274	20 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.