ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2025

Shares 148,632 Value ($000) $2,689 Avg Close $14.93 Range $10.50 - $18.95

Q3 2025

Shares 115,796 Value ($000) $1,659 Avg Close $11.51 Range $7.54 - $14.90

Q2 2025

Shares 42,355 Value ($000) $327 Avg Close $7.30 Range $5.00 - $9.68

Q4 2024

Shares 24,958 Value ($000) $332 Avg Close $10.54 Range $7.20 - $14.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	148,632	$2,689	$14.93	$10.50 - $18.95
Q3 2025	115,796	$1,659	$11.51	$7.54 - $14.90
Q2 2025	42,355	$327	$7.30	$5.00 - $9.68
Q4 2024	24,958	$332	$10.54	$7.20 - $14.93