Item 5.02 Departure of Directors or Certain Officers; Election of Directors;

Appointment of Certain Officers; Compensatory Arrangements of Certain

Officers.

On January 26, 2021, our Board of Directors (the "Board") appointed Alice Huang, Ph.D. to the Board, to serve until our next annual meeting of stockholders and until her successor is duly elected and qualified, or until her earlier death, resignation or removal. Concurrently with her appointment to the Board, the Compensation Committee of the Board determined that Dr. Huang is an "Eligible Director" as that term is defined in our Non-Employee Director Compensation Policy, attached as Exhibit 10.4 to our Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on March 12, 2020. Accordingly, on January 26, 2021, Dr. Huang became a participant in our Non-Employee Director Compensation Policy ("Compensation Policy"). Dr. Huang was also granted an option to purchase 80,000 shares of the Company's stock under the Compensation Policy. Dr. Huang has also entered into our standard form of indemnification agreement, the form of which is attached as Exhibit 10.1 to our Registration Statement on Form S-1, as amended (File No. 333-183384), originally filed with the SEC on August 17, 2012.

Concurrently with her appointment to the Board, Dr. Huang was also appointed to serve on the Compensation Committee of the Board.

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