Paul Lytle is voluntarily resigning as CFO of Avid Bioservices Inc.

Lytle's resignation will be effective 90 days from the date of his Feb. 23 notice.

The company is starting a search for its next CFO.

Avid Bioservices is a Tustin, Calif.-based a biopharmaceutical company that researches and develops antibodies for the treatment of cancer in the U.S.