AMPLITUDE INC

Ticker: AMPL CUSIP: 03213A104 Class: Common Stock

ACADIAN ASSET MANAGEMENT LLC's Holding History (CIK: 0000916542)

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

Q4 2025

Shares 531,542 Value ($000) $6 Avg Close $10.52 Range $9.31 - $12.05

Q3 2025

Shares 368,584 Value ($000) $4 Avg Close $11.86 Range $10.59 - $14.49

Q2 2025

Shares 77,488 Value ($000) $1 Avg Close $10.82 Range $7.55 - $13.34

Q1 2023

Shares 7,588 Value ($000) $0 Avg Close $13.28 Range $10.97 - $16.95

Q4 2022

Shares 27,132 Value ($000) $0 Avg Close $14.16 Range $10.51 - $17.73

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	531,542	$6	$10.52	$9.31 - $12.05
Q3 2025	368,584	$4	$11.86	$10.59 - $14.49
Q2 2025	77,488	$1	$10.82	$7.55 - $13.34
Q1 2023	7,588	$0	$13.28	$10.97 - $16.95
Q4 2022	27,132	$0	$14.16	$10.51 - $17.73