ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND's Holding History (CIK: 0001535845)

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

Q2 2023
Shares 121,000 Value ($000) $195 Avg Close — Range —
Q4 2022
Shares 208,100 Value ($000) $683 Avg Close — Range —
Q2 2022
Shares 616,900 Value ($000) $4,806 Avg Close — Range —
Q2 2021
Shares 165,000 Value ($000) $2,566 Avg Close — Range —
Q1 2021
Shares 451,500 Value ($000) $6,484 Avg Close — Range —
Q4 2020
Shares 559,700 Value ($000) $10,987 Avg Close — Range —
Q3 2020
Shares 188,000 Value ($000) $2,436 Avg Close — Range —
Q1 2020
Shares 75,360 Value ($000) $641 Avg Close — Range —