GREENE COUNTY BANCORP INC

Ticker: GCBC CUSIP: 394357107 Class: Common Stock

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

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

Q4 2025

Shares 104 Value ($000) $2 Avg Close $22.56 Range $21.06 - $25.43

Q3 2025

Shares 104 Value ($000) $2 Avg Close $23.75 Range $21.84 - $25.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	104	$2	$22.56	$21.06 - $25.43
Q3 2025	104	$2	$23.75	$21.84 - $25.71