ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

GLOBEFLEX CAPITAL L P's Holding History (CIK: 0000921531)

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

Q4 2025

Shares 77,224 Value ($000) $1,397 Avg Close $14.93 Range $10.50 - $18.95

Q3 2025

Shares 15,458 Value ($000) $222 Avg Close $11.51 Range $7.54 - $14.90

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	77,224	$1,397	$14.93	$10.50 - $18.95
Q3 2025	15,458	$222	$11.51	$7.54 - $14.90