RBB BANCORP

Ticker: RBB CUSIP: 74930B105 Class: Common Stock

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

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

Q4 2025

Shares 158 Value ($000) $3 Avg Close $19.66 Range $16.74 - $22.59

Q3 2025

Shares 308 Value ($000) $6 Avg Close $19.13 Range $17.07 - $20.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	158	$3	$19.66	$16.74 - $22.59
Q3 2025	308	$6	$19.13	$17.07 - $20.65