ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2024
Shares 128,522 Value ($000) $89 Avg Close — Range —
Q4 2023
Shares 140,556 Value ($000) $72 Avg Close — Range —
Q3 2023
Shares 64,091 Value ($000) $95 Avg Close — Range —
Q3 2022
Shares 5,579 Value ($000) $21 Avg Close — Range —
Q1 2022
Shares 4,288 Value ($000) $40 Avg Close — Range —
Q3 2021
Shares 13,838 Value ($000) $248 Avg Close — Range —
Q1 2021
Shares 1,056 Value ($000) $15 Avg Close — Range —
Q2 2019
Shares 2,446 Value ($000) $49 Avg Close — Range —
Q1 2019
Shares 14 Value ($000) $1 Avg Close — Range —
Q2 2018
Shares 3,901 Value ($000) $143 Avg Close — Range —
Q1 2018
Shares 762 Value ($000) $30 Avg Close — Range —
Q4 2017
Shares 5,000 Value ($000) $91 Avg Close — Range —