ATARA BIOTHERAPEUTICS INC

CUSIP: 046513107 Class: Common Stock

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

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

Q1 2024
Shares 10,167,043 Value ($000) $7,056 Avg Close — Range —
Q4 2023
Shares 10,067,043 Value ($000) $5,162 Avg Close — Range —
Q1 2017
Shares 434,812 Value ($000) $8,935 Avg Close — Range —
Q4 2016
Shares 215,812 Value ($000) $3,065 Avg Close — Range —
Q3 2015
Shares 803,458 Value ($000) $25,261 Avg Close — Range —
Q2 2015
Shares 1,063,189 Value ($000) $56,094 Avg Close — Range —
Q1 2015
Shares 1,063,189 Value ($000) $44,197 Avg Close — Range —
Q4 2014
Shares 385,124 Value ($000) $10,133 Avg Close — Range —