BACKBLAZE INC

Ticker: BLZE CUSIP: 05637B105 Class: Common Stock

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 362 Value ($000) $2 Avg Close $6.85 Range $4.13 - $10.86

Q3 2025

Shares 394 Value ($000) $4 Avg Close $7.34 Range $4.65 - $10.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	362	$2	$6.85	$4.13 - $10.86
Q3 2025	394	$4	$7.34	$4.65 - $10.83