This Amendment No. 7 (this “Amendment”) amends and supplements the Tender Offer Statement on
Schedule TO initially filed with the U.S. Securities and Exchange Commission on August 29, 2022, as amended on August 30, 2022, September 13, 2022, September 20, 2022, September 23, 2022, September 27, 2022, and
October 3, 2022 (together with any amendments and supplements thereto, the “Schedule TO”) by Nikola Corporation, a Delaware corporation (“Nikola”), and J Purchaser Corp., a Delaware corporation and a wholly owned subsidiary
of Nikola (the “Offeror”) relating to the offer by Offeror to exchange each outstanding share of common stock of Romeo Power, Inc., a Delaware corporation (“Romeo”), par value $0.0001 per share (“Romeo Common Stock”)
for 0.1186 of a share of common stock, $0.0001 par value per share, of Nikola (“Nikola Common Stock”). Nikola has filed with the SEC a Registration Statement on Form S-4 dated
August 29, 2022 (the “Registration Statement”) and Amendment No. 1 to the Registration Statement on Form S-4 dated September 27, 2022 (“Amendment No. 1 to the Registration
Statement”), relating to the offer and sale of shares of Nikola Common Stock to be issued to holders of shares of Romeo common stock validly tendered and not validly withdrawn in the Offer. The terms and conditions of the Offer are set forth in
the prospectus/offer to exchange, which is a part of Amendment No. 1 to the Registration Statement, and the Letter of Transmittal, which are filed as Exhibits (a)(4) and (a)(1)(A), respectively, to the Schedule TO. Pursuant to General
Instruction F to Schedule TO, the information contained in the prospectus/offer to exchange and the Letter of Transmittal, including any prospectus supplement or other supplement thereto related to the Offer hereafter filed with the SEC by Nikola or
the Offeror, is hereby expressly incorporated into the Schedule TO by reference in response to Items 1 through 11 of the Schedule TO and is supplemented by the information specifically provided for in this Schedule TO. Capitalized terms used, but
not otherwise defined, in this Amendment shall have the meanings ascribed to them in the prospectus/offer to exchange. This Amendment is being filed to amend and supplement the Schedule TO to the extent specifically provided for herein. The
Agreement and Plan of Merger and Reorganization, dated as of July 30, 2022, by and among Nikola, the Offeror and Romeo (the “merger agreement”), a copy of which is attached as Exhibit (d)(1) to the Schedule TO, is incorporated into
the Schedule TO by reference.
All information regarding the Offer as set forth in the Schedule TO, including all exhibits and annexes thereto that were
previously filed with the Schedule TO, is hereby expressly incorporated by reference into this Amendment, except that such information is hereby amended and supplemented to the extent specifically provided for herein and to the extent amended and
supplemented by the exhibits filed herewith.