Sec Form 4 Filing - Ferber Robert @ Xos, Inc. - 2021-08-20

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Ferber Robert 2. Issuer Name and Ticker or Trading Symbol Xos, Inc. [ XOS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Technology Officer (Last) (First) (Middle) C/O XOS, INC., 3550 TYBURN STREET, UNIT 100 3. Date of Earliest Transaction (MM/DD/YY) 08/20/2021 (Street) LOS ANGELES, CA90065 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 08/20/2021 A( 1 ) 427,971 A $ 0 ( 1 ) 427,971 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right to Buy) $ 0.015 08/20/2021 A( 1 ) 550,248 ( 2 ) 06/06/2029 Common Stock 550,248 ( 3 ) 550,248 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ferber Robert C/O XOS, INC. 3550 TYBURN STREET, UNIT 100 LOS ANGELES, CA90065 Chief Technology Officer Signatures Robert Ferber, by /s/ Kim Merritt, Attorney-in-Fact 08/24/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Received pursuant to the Agreement and Plan of Merger, dated as of February 21, 2021, as amended on May 14, 2021, by and among NextGen Acquisition Corporation ("Acquiror"), Sky Merger Sub I, Inc., a Delaware corporation and wholly owned subsidiary of Acquiror ("Merger Sub") and Xos, Inc. ("Xos"), pursuant to which Merger Sub was merged with and into Xos, whereupon the separate existence of Merger Sub ceased and Xos became the surviving company and continued in existence as a subsidiary of Acquiror, which subsequently changed its name to Xos, Inc. (the "Issuer"). ( 2 )25% of the stock option vested and became exercisable on April 10, 2020, and thereafter vest as to 1/48th of the shares in equal monthly installments, until such time as the option is 100% vested, subject to the continuing employment of the Reporting Person on each vesting date. ( 3 )Received in exchange for a Stock Option to purchase 500,000 shares of Xos Common Stock, of which 218,750 have been exercised.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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