ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

Cambridge Investment Research Advisors, Inc.'s Holding History (CIK: 0001419186)

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

Q4 2025

Shares 22,864 Value ($000) $0 Avg Close $14.93 Range $10.50 - $18.95

Q3 2025

Shares 17,109 Value ($000) $0 Avg Close $11.51 Range $7.54 - $14.90

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	22,864	$0	$14.93	$10.50 - $18.95
Q3 2025	17,109	$0	$11.51	$7.54 - $14.90