POWER OF ATTORNEY
Know all by these presents that the undersigned hereby constitutes and appoints James Vollins of Eiger
BioPharmaceuticals, Inc. (the “Company”), as the
undersigned’s true and lawful attorney-in-fact and agent to:
(1) prepare, execute in the undersigned’s name and on the undersigned’s behalf, and submit to the Securities and Exchange Commission (the “SEC”) a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes and passwords enabling the undersigned to make
electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934 or any rule or regulation thereunder (including SEC Forms 3, 4 and 5, amendments thereto and joint filing agreements in connection
therewith) (the “Section 16 Reports”) and forms required by Rule 144 under the Securities Act of 1933 (the “Forms 144”);
(2) prepare, execute in the undersigned’s name and on the undersigned’s behalf, and submit to the SEC all Section 16 Reports in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder;
(3) do and perform any and all acts for and on behalf of the undersigned that may be necessary or desirable to prepare and execute any such Section 16 Reports and Forms 144, and
file such Forms with the SEC and any stock exchange, self-regulatory association or any other authority; and
(4) take any other action of any type whatsoever in connection with the foregoing that, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or
legally required of the undersigned, it being understood that the documents executed by the attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as the
attorney-in-fact may approve in the attorney-in-fact’s discretion.
The undersigned hereby grants to such attorney‑in‑fact full power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming that such attorney‑in‑fact, or such attorney‑in‑fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorney-in-fact, or such attorney‑in‑fact's substitute or substitutes, in serving in such capacity at the request of the undersigned, are not assuming (nor is the Company assuming) any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange Act of 1934 or Rule 144 under the Securities Act of 1933.
This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file neither Section 16
Reports nor Forms 144 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the Company and the attorney-in-fact. This Power of
Attorney revokes any other power of attorney that the undersigned has previously granted to representatives of the Company.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of the date written below.
Dated: 8/30/23
/s/ Ingrid Choong
Ingrid Choong