ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

FMR LLC's Holding History (CIK: 0000315066)

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

Q4 2025

Shares 17,156 Value ($000) $310 Avg Close $14.93 Range $10.50 - $18.95

Q3 2025

Shares 17,156 Value ($000) $246 Avg Close $11.51 Range $7.54 - $14.90

Q2 2025

Shares 17,156 Value ($000) $132 Avg Close $7.30 Range $5.00 - $9.68

Q1 2025

Shares 17,157 Value ($000) $102 Avg Close $8.73 Range $5.40 - $18.70

Q4 2024

Shares 26,699 Value ($000) $355 Avg Close $10.54 Range $7.20 - $14.93

Q3 2024

Shares 25,061 Value ($000) $204 Avg Close $8.56 Range $6.50 - $12.98

Q2 2024

Shares 17,680 Value ($000) $150 Avg Close $15.04 Range $7.07 - $20.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	17,156	$310	$14.93	$10.50 - $18.95
Q3 2025	17,156	$246	$11.51	$7.54 - $14.90
Q2 2025	17,156	$132	$7.30	$5.00 - $9.68
Q1 2025	17,157	$102	$8.73	$5.40 - $18.70
Q4 2024	26,699	$355	$10.54	$7.20 - $14.93
Q3 2024	25,061	$204	$8.56	$6.50 - $12.98
Q2 2024	17,680	$150	$15.04	$7.07 - $20.82