ATARA BIOTHERAPEUTICS INC

Ticker: ATRA CUSIP: 046513206 Class: Common Stock

STALEY CAPITAL ADVISERS INC's Holding History (CIK: 0001106565)

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

Q4 2025
Shares 50,000 Value ($000) $905 Avg Close $14.93 Range $10.50 - $18.95
Q3 2025
Shares 50,000 Value ($000) $717 Avg Close $11.51 Range $7.54 - $14.90
Q2 2025
Shares 75,000 Value ($000) $579 Avg Close $7.30 Range $5.00 - $9.68
Q1 2025
Shares 80,000 Value ($000) $475 Avg Close $8.73 Range $5.40 - $18.70
Q4 2024
Shares 50,000 Value ($000) $666 Avg Close $10.54 Range $7.20 - $14.93
Q3 2024
Shares 40,000 Value ($000) $325 Avg Close $8.56 Range $6.50 - $12.98
Q2 2024
Shares 40,000 Value ($000) $340 Avg Close $15.04 Range $7.07 - $20.82