AMPLITUDE INC

Ticker: AMPL CUSIP: 03213A104 Class: Common Stock

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2025

Shares 1,964,050 Value ($000) $22,744 Avg Close $10.52 Range $9.31 - $12.05

Q3 2025

Shares 2,026,598 Value ($000) $21,725 Avg Close $11.86 Range $10.59 - $14.49

Q2 2025

Shares 229,370 Value ($000) $2,844 Avg Close $10.82 Range $7.55 - $13.34

Q4 2022

Shares 43,210 Value ($000) $522 Avg Close $14.16 Range $10.51 - $17.73

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,964,050	$22,744	$10.52	$9.31 - $12.05
Q3 2025	2,026,598	$21,725	$11.86	$10.59 - $14.49
Q2 2025	229,370	$2,844	$10.82	$7.55 - $13.34
Q4 2022	43,210	$522	$14.16	$10.51 - $17.73