AMPLITUDE INC

Ticker: AMPL CUSIP: 03213A104 Class: Common Stock

SUMMIT SECURITIES GROUP LLC's Holding History (CIK: 0001531593)

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

Q4 2025

Shares 1,500 Value ($000) $17 Avg Close $10.52 Range $9.31 - $12.05

Q1 2025

Shares 267 Value ($000) $3 Avg Close $11.81 Range $10.05 - $14.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,500	$17	$10.52	$9.31 - $12.05
Q1 2025	267	$3	$11.81	$10.05 - $14.88