BANK FIRST CORP

Ticker: BFC CUSIP: 06211J100 Class: Common Stock

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

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

Q4 2025

Shares 22 Value ($000) $3 Avg Close $126.97 Range $118.67 - $139.22

Q3 2025

Shares 62 Value ($000) $8 Avg Close $123.55 Range $114.48 - $131.66

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	22	$3	$126.97	$118.67 - $139.22
Q3 2025	62	$8	$123.55	$114.48 - $131.66