Form 4 for BLZE Backblaze, Inc.

Accepted 2026-05-21 20:51:59 ET · period of report 2026-05-19 · accession 0001628280-26-037500 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
2026-05-21 20:51	2026-05-19	BLZE	Suidan Marc	CFO	A - Grant	$3.68	+2,500	381.0K	+0.7%	+$9,200
2026-05-21 20:51	2026-05-20	BLZE	Suidan Marc	CFO	F - Tax	$7.43	-269	380.7K	-0.1%	-$1,999
2026-05-21 20:51	2026-05-20	BLZE	Suidan Marc	CFO	D - Sale to Iss	$7.43	-18.0K	362.7K	-5%	-$133.7K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Class A Common Stock	2026-05-19	A	A	2,500	$3.68	380,980	D	—	—	(F1) These shares of the Issuer's common stock were acquired pursuant to the Issuer's 2021 Employee Stock Purchase Plan ("ESPP") for the ESPP purchase period of November 20, 2025 through May 19, 2026. This transaction is exempt pursuant to Rule 16b-3(c) promulgated pursuant to the Securities Exchange Act of 1934. (F2) Under the ESPP, the purchase price is equal to 85% of the lower of the closing price of the Issuer's common stock on the first day of the applicable purchase period or the purchase date. The closing price of the Issuer's common stock on November 20, 2025 was $4.33.
2	Common	Class A Common Stock	2026-05-20	F	D	269	$7.43	380,711	D	—	—
3	Common	Class A Common Stock	2026-05-20	D	D	18,000	$7.43	362,711	D	—	—	(F3) Represents previously issued restricted stock units that the Issuer retired for cash upon vesting in lieu of issuing shares of common stock. (F4) These restricted stock units were settled by the Issuer at the closing price per share of the Issuer's common stock on the vesting date.