EXPONENT INC

Ticker: EXPO CUSIP: 30214U102 Class: Common Stock

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

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

Q4 2025

Shares 354 Value ($000) $25 Avg Close $70.04 Range $64.13 - $76.49

Q3 2025

Shares 456 Value ($000) $32 Avg Close $70.97 Range $63.29 - $77.29

Q2 2025

Shares 547 Value ($000) $41 Avg Close $76.63 Range $71.84 - $82.91

Q1 2025

Shares 528 Value ($000) $43 Avg Close $85.84 Range $77.36 - $96.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	354	$25	$70.04	$64.13 - $76.49
Q3 2025	456	$32	$70.97	$63.29 - $77.29
Q2 2025	547	$41	$76.63	$71.84 - $82.91
Q1 2025	528	$43	$85.84	$77.36 - $96.05