UNITED STATED

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

UNDER

THE SECURITIES ACT OF 1933

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 12, 2021

GigCapital3, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-39283	84-4605714
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(IRS Employer Identification No.)

1731 Embarcadero Road, Suite 200

Palo Alto, CA 94303

(Address of principal executive offices, including zip code)

(650) 276-7040

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2 below):

☒ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Units, each consisting of one share of Common Stock and three-fourths of one Redeemable Warrant	GIK.U	New York Stock Exchange
Common Stock, par value $0.0001 per share	GIK	New York Stock Exchange
Redeemable Warrants, each full warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share	GIK.WS	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 8.01 Other Events.

GigCapital3, Inc. (“GigCapital3”) is aware of the U.S. Securities and Exchange Commission’s Staff Statement on Accounting and Reporting Considerations for Warrants Issued by Special Purpose Acquisition Companies that was released on April 12, 2021 (the “Staff Statement”). GigCapital3 is evaluating the applicability and impact of the Staff Statement on its historical financial statements that have been filed with the U.S. Securities and Exchange Commission. With respect to the special meeting of GigCapital3’s stockholders that is scheduled to occur on Wednesday, April 21, 2021 at 10:00 a.m., PDT, GigCapital3 does not believe the application of the Staff Statement would materially impact its stockholders’ consideration of the business combination proposal and other proposals to be considered and voted upon at the meeting.

Additional Information About the Proposed Business Combination and Where to Find It

The business combination and other proposals will be submitted to stockholders of GigCapital3 for their consideration. GigCapital3 has filed a registration statement on Form S-4 (File No. 333-251862) with the SEC containing a preliminary proxy statement and a preliminary prospectus of GigCapital3. After the registration statement was declared effective, GigCapital3 mailed a definitive proxy statement/prospectus relating to the proposed business combination to its stockholders. This Current Report on Form 8-K does not contain all the information that should be considered concerning the proposed business combination and is not intended to form the basis of any investment decision or any other decision in respect of the business combination. GigCapital3’s stockholders and other interested persons are advised to read the definitive proxy statement/prospectus, as well as other documents filed with the SEC, because these documents will contain important information about the business combination. The definitive proxy statement/consent solicitation statement/prospectus and other relevant materials for the proposed business combination were mailed to stockholders of GigCapital3 as of March 15, 2021, the record date for voting on the proposed business combination.

Stockholders may also obtain a copy of the preliminary proxy statement/prospectus as well as other documents filed with the SEC by GigCapital3, without charge, at the SEC’s website located at www.sec.gov or by directing a request to Brad Weightman, Vice President and Chief Financial Officer, GigCapital3, Inc., 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303, or by telephone at (650) 276-7040.

Participants in the Solicitation

Lightning eMotors, GigCapital3 and their respective directors and executive officers and other persons may be deemed to be participants in the solicitations of proxies from GigCapital3’s stockholders in respect of the proposed business combination and related transactions. Information regarding GigCapital3’s directors and executive officers is available in its final prospectus filed with the SEC under Rule 424(b)(4) on May 15, 2020. Additional information regarding the participants in the proxy solicitation and a description of their direct and indirect interests will be contained in the preliminary and definitive proxy statements/prospectus related to the proposed business combination and related transactions when it becomes available, and which can be obtained free of charge from the sources indicated above.

Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include, but are not limited to, statements regarding the business combination between GigCapital3 and Lightning eMotors and its closing, and the expectations, hopes, beliefs, intentions, plans, prospects or strategies regarding the business combination, the future business plans of the Lightning eMotors and GigCapital3 management teams, and Lightning eMotors’ revenue growth and financial performance, facilities, product expansion, services and product shipments and capabilities. Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” and

similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. The forward-looking statements contained in this Current Report on Form 8-K are based on certain assumptions and analyses made by the management of GigCapital3 and/or Lightning eMotors in light of their respective experience and their perception of historical trends, current conditions and expected future developments and their potential effects on Lightning eMotors and GigCapital3 as well as other factors they believe are appropriate in the circumstances. There can be no assurance that future developments affecting Lightning eMotors or GigCapital3 will be those that the parties have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond the control of the parties) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements, including that the GigCapital3 stockholders will approve the transaction, the ability of the post-combination company to meet the NYSE listing standards, product and service acceptance and that Lightning eMotors will have sufficient capital upon the approval of the transaction to operate as anticipated. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. Additional factors that could cause actual results to differ are discussed under the heading “Risk Factors” and in other sections of GigCapital3’s filings with the SEC, and in GigCapital3’s current and periodic reports filed or furnished from time to time with the SEC. All forward-looking statements in this Current Report on Form 8-K are made as of the date hereof, based on information available to GigCapital3 and/or Lightning eMotors as of the date hereof, and GigCapital3 and Lightning eMotors assume no obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

By:	/s/ Dr. Avi S. Katz
	Name: Dr. Avi S. Katz Title:   Chief Executive Officer and President

Dated: April 14, 2021