EXPLANATORY NOTE
Eiger BioPharmaceuticals, Inc. (the “Registrant”) is filing this Registration Statement on Form S-8 for the purpose of registering (a) 1,728,441 shares of the Registrant’s common stock (the “Common Stock”) issuable to eligible persons under the Eiger BioPharmaceuticals, Inc. Amended and Restated 2013 Equity Incentive Plan (the “2013 Plan”), which Common Stock is in addition to the shares of Common Stock registered on the Registrant’s Form S-8 filed on January 30, 2014 (File No. 333-193662), March 31, 2015 (File No. 333-203154), April 29, 2016 (File No. 333-211009), August 11, 2017 (File No. 333-219936), May 11, 2018 (File No. 333-224872), March 14, 2019 (File No. 333-230287), March 13, 2020 (File No. 333-237156), and March 9, 2021 (File No. 333-254039) and (b) 165,000 shares of Common Stock issuable to eligible persons under the Eiger BioPharmaceuticals, Inc. 2013 Employee Stock Purchase Plan (the “2013 ESPP”), which Common Stock is in addition to the shares of Common Stock registered on the Registrant’s Form S-8 filed on January 30, 2014 (File No. 333-193662), March 31, 2015 (File No. 333-203154), April 29, 2016 (File No. 333-211009), August 11, 2017 (File No. 333-219936), May 11, 2018 (File No. 333-224872), March 14, 2019 (File No. 333-230287), March 13, 2020 (File No. 333-237156), and March 9, 2021 (File No. 333-254039) (collectively, the “Prior Registration Statements”).
This Registration Statement relates to securities of the same class as that to which the Prior Registration Statements relate, and is submitted in accordance with General Instruction E to Form S-8 regarding Registration of Additional Securities. Pursuant to General Instruction E of Form S-8, the contents of the Prior Registration Statements, to the extent relating to the registration of Common Stock issuable under the 2013 EIP and 2013 ESPP, are incorporated herein by reference and made part of this Registration Statement, except as amended hereby.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents have been filed by the Registrant with the Securities and Exchange Commission (the “Commission”) and are incorporated herein by reference:
| • | | The Registrant’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021, filed with the Commission on March 10, 2022; |
| • | | The Registrant’s Current Report on Form 8-K filed with the Commission on January 6, 2022; and |
| • | | The description of the Registrant’s Common Stock contained in the Registrant’s registration statement on Form 8-A filed with the Commission on November 7, 2013, including any amendments or reports filed for the purpose of updating such description. |
All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, other than current reports furnished under Item 2.02 or Item 7.01 of Form 8-K and exhibits furnished on such form that relate to such items, prior to the filing of a post-effective amendment to this Registration Statement which indicates that all of the shares of Common Stock offered have been sold or which deregisters all of such shares then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the date of the filing of such documents.
For purposes of this Registration Statement, any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.