AMPLITUDE INC

Ticker: AMPL CUSIP: 03213A104 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2023

Shares 4,043 Value ($000) $50 Avg Close $13.28 Range $10.97 - $16.95

Q4 2022

Shares 311 Value ($000) $4 Avg Close $14.16 Range $10.51 - $17.73

Q3 2022

Shares 3,856 Value ($000) $60 Avg Close $16.03 Range $13.75 - $19.24

Q2 2022

Shares 15,080 Value ($000) $215 Avg Close $17.54 Range $13.42 - $21.50

Q1 2022

Shares 5,126 Value ($000) $94 Avg Close $30.37 Range $15.17 - $53.73

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	4,043	$50	$13.28	$10.97 - $16.95
Q4 2022	311	$4	$14.16	$10.51 - $17.73
Q3 2022	3,856	$60	$16.03	$13.75 - $19.24
Q2 2022	15,080	$215	$17.54	$13.42 - $21.50
Q1 2022	5,126	$94	$30.37	$15.17 - $53.73