ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

Birchview Capital, LP's Holding History (CIK: 0001618205)

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

Q2 2019
Shares 20,000 Value ($000) $402 Avg Close — Range —
Q1 2019
Shares 24,000 Value ($000) $954 Avg Close — Range —
Q4 2018
Shares 34,000 Value ($000) $1,181 Avg Close — Range —
Q3 2018
Shares 34,000 Value ($000) $1,406 Avg Close — Range —
Q2 2018
Shares 34,000 Value ($000) $1,250 Avg Close — Range —
Q1 2018
Shares 23,000 Value ($000) $897 Avg Close — Range —