(1)

Calculated in accordance with Rule 457(o) under the Securities Act of 1933, as amended, or the Securities Act, based on the proposed maximum aggregate offering price, and Rule 457(r) under the Securities Act. In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrant initially deferred payment of all of the registration fee for Registration Statement No. 333-272051, except with respect to unsold securities that have been previously registered.

(2)

Securities being offered under this prospectus supplement represent only unsold securities previously registered on the prospectus supplement filed pursuant to Rule 424(b)(5) on January 10, 2023, or the Prior Prospectus Supplement, and an accompanying prospectus dated June 1, 2020, pursuant to a Registration Statement on Form S-3 (File No. 333-238321) filed with the Securities and Exchange Commission, or the SEC, on May 15, 2020 and declared effective on June 1, 2020. As of the date hereof, the registrant has not sold $77,051,513 of the securities registered pursuant to the Prior Prospectus Supplement (the “Unsold Securities”). In connection with the registration of such Unsold Securities, the registrant paid a registration fee of $10,001, which will continue to be applied to such Unsold Securities. In accordance with Rule 415(a)(6) under the Securities Act, only such $77,051,513 aggregate amount of Unsold Securities are covered by this prospectus supplement. Accordingly, no additional registration fee is payable. Pursuant to Rule 415(a)(6), this “Calculation of Registration Fee” table shall be deemed to update the “Calculation of Registration Fee” table in the current registration statement on Form S-3 filed with the SEC on May 18, 2023 (File No. 333-272051) to continue the offering of Unsold Securities initially registered under the Prior Prospectus Supplement.