ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

MORGAN STANLEY's Holding History (CIK: 0000895421)

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

Q4 2025

Shares 15,991 Value ($000) $289 Avg Close $14.93 Range $10.50 - $18.95

Q3 2025

Shares 35,938 Value ($000) $515 Avg Close $11.51 Range $7.54 - $14.90

Q2 2025

Shares 14,926 Value ($000) $115 Avg Close $7.30 Range $5.00 - $9.68

Q1 2025

Shares 11,828 Value ($000) $70 Avg Close $8.73 Range $5.40 - $18.70

Q4 2024

Shares 28,351 Value ($000) $377 Avg Close $10.54 Range $7.20 - $14.93

Q3 2024

Shares 16,189 Value ($000) $132 Avg Close $8.56 Range $6.50 - $12.98

Q2 2024

Shares 9,785 Value ($000) $83 Avg Close $15.04 Range $7.07 - $20.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	15,991	$289	$14.93	$10.50 - $18.95
Q3 2025	35,938	$515	$11.51	$7.54 - $14.90
Q2 2025	14,926	$115	$7.30	$5.00 - $9.68
Q1 2025	11,828	$70	$8.73	$5.40 - $18.70
Q4 2024	28,351	$377	$10.54	$7.20 - $14.93
Q3 2024	16,189	$132	$8.56	$6.50 - $12.98
Q2 2024	9,785	$83	$15.04	$7.07 - $20.82