SOUTH SAN FRANCISCO, Calif. (AP) _ Calithera Biosciences Inc. (CALA) on Monday reported a loss of $9.1 million in its second quarter.

On a per-share basis, the South San Francisco, California-based company said it had a loss of $1.59.

The company's shares closed at $3.96. A year ago, they were trading at $43.80.

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