ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

TANG CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001232621)

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

Q1 2025

Shares 75,196 Value ($000) $447 Avg Close $8.73 Range $5.40 - $18.70

Q4 2024

Shares 75,196 Value ($000) $1,001 Avg Close $10.54 Range $7.20 - $14.93

Q3 2024

Shares 75,196 Value ($000) $611 Avg Close $8.56 Range $6.50 - $12.98

Q2 2024

Shares 75,196 Value ($000) $639 Avg Close $15.04 Range $7.07 - $20.82

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	75,196	$447	$8.73	$5.40 - $18.70
Q4 2024	75,196	$1,001	$10.54	$7.20 - $14.93
Q3 2024	75,196	$611	$8.56	$6.50 - $12.98
Q2 2024	75,196	$639	$15.04	$7.07 - $20.82