ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q3 2025

Shares 26,213 Value ($000) $0 Avg Close $11.51 Range $7.54 - $14.90

Q2 2025

Shares 19,591 Value ($000) $0 Avg Close $7.30 Range $5.00 - $9.68

Q1 2025

Shares 19,385 Value ($000) $0 Avg Close $8.73 Range $5.40 - $18.70

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	26,213	$0	$11.51	$7.54 - $14.90
Q2 2025	19,591	$0	$7.30	$5.00 - $9.68
Q1 2025	19,385	$0	$8.73	$5.40 - $18.70