ON24 INC

Ticker: ONTF CUSIP: 68339B104 Class: Common Stock

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

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

Q4 2025

Shares 592 Value ($000) $5 Avg Close $5.66 Range $4.91 - $8.10

Q3 2025

Shares 592 Value ($000) $3 Avg Close $5.38 Range $4.70 - $6.09

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	592	$5	$5.66	$4.91 - $8.10
Q3 2025	592	$3	$5.38	$4.70 - $6.09