THOUSAND OAKS, Calif. (AP) — THOUSAND OAKS, Calif. (AP) — Atara Biotherapeutics Inc. (ATRA) on Tuesday reported a loss of $2.2 million in its third quarter.

The Thousand Oaks, California-based company said it had a loss of 15 cents per share.

The drug developer posted revenue of $1.2 million in the period.

Atara Biotherapeutics shares have fallen 55% since the beginning of the year. In the final minutes of trading on Tuesday, shares hit $8.20, a fall of 33% in the last 12 months.

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This story was generated by Automated Insights (http://automatedinsights.com/ap) using data from Zacks Investment Research. Access a Zacks stock report on ATRA at https://www.zacks.com/ap/ATRA