ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

SUSQUEHANNA INTERNATIONAL GROUP, LLP's Holding History (CIK: 0001446194)

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

Q4 2025

Shares 14,018 Value ($000) $254 Avg Close $14.93 Range $10.50 - $18.95

Q1 2025

Shares 41,014 Value ($000) $244 Avg Close $8.73 Range $5.40 - $18.70

Q2 2024

Shares 14,455 Value ($000) $123 Avg Close $15.04 Range $7.07 - $20.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,018	$254	$14.93	$10.50 - $18.95
Q1 2025	41,014	$244	$8.73	$5.40 - $18.70
Q2 2024	14,455	$123	$15.04	$7.07 - $20.82