ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

Hudson Bay Capital Management LP's Holding History (CIK: 0001393825)

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

Q4 2017
Shares 25,000 Value ($000) $453 Avg Close — Range —
Q2 2017
Shares 10,000 Value ($000) $140 Avg Close — Range —