ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

Old West Investment Management, LLC's Holding History (CIK: 0001549358)

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

Q1 2019
Shares 9,665 Value ($000) $384 Avg Close — Range —
Q4 2018
Shares 9,665 Value ($000) $335 Avg Close — Range —
Q3 2018
Shares 9,984 Value ($000) $412 Avg Close — Range —
Q2 2018
Shares 10,028 Value ($000) $368 Avg Close — Range —
Q1 2018
Shares 9,694 Value ($000) $378 Avg Close — Range —
Q4 2017
Shares 19,010 Value ($000) $344 Avg Close — Range —
Q3 2017
Shares 20,895 Value ($000) $345 Avg Close — Range —
Q2 2017
Shares 22,700 Value ($000) $317 Avg Close — Range —
Q1 2017
Shares 24,924 Value ($000) $512 Avg Close — Range —