Sec Form 4/A Filing - Adcock Brett @ Archer Aviation Inc. - 2021-09-16

FORM 4/A 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 Adcock Brett 2. Issuer Name and Ticker or Trading Symbol Archer Aviation Inc. [ ACHR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) Co-Chief Executive Officer (Last) (First) (Middle) C/O ARCHER AVIATION INC., 1880 EMBARCADERO RD. 3. Date of Earliest Transaction (MM/DD/YY) 09/16/2021 (Street) PALO ALTO, CA94303 4. If Amendment, Date Original Filed (MM/DD/YY) 09/20/2021 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 Class A Common Stock 09/16/2021 P 100,000 A $ 10 100,000 I See footnote ( 1 )

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 Class B Common Stock ( 2 ) 09/16/2021 J( 2 )( 3 ) 9,161,653 ( 2 ) ( 2 ) Class A Common Stock 9,161,653 $ 0 9,161,653 D Class B Common Stock ( 2 ) 09/16/2021 J( 2 ) 27,756,278 ( 2 ) ( 2 ) Class A Common Stock 27,756,278 $ 0 27,756,278 I See footnote ( 1 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Adcock Brett C/O ARCHER AVIATION INC. 1880 EMBARCADERO RD. PALO ALTO, CA94303 X X Co-Chief Executive Officer Signatures /s/ Andy Missan, Attorney-in-fact 09/27/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares are held by Hight Drive Growth LLC. The Reporting Person is a managing member of Hight Drive Growth LLC and has voting and dispositive power over the shares held by Hight Drive Growth LLC. ( 2 )On September 16, 2021, pursuant to that certain Business Combination Agreement, as amended and restated on July 29, 2021, by and among the Issuer, Artemis Acquisition Sub Inc. ("Merger Sub") and Archer Aviation Inc. ("Legacy Archer"), Merger Sub merged with and into Legacy Archer with Legacy Archer surviving as a wholly owned subsidiary of the Issuer (the "Merger"). Upon consummation of the Merger (the "Effective Time"), each issued and outstanding share of common stock of Legacy Archer was canceled and converted into approximately 1.00656519 shares of Class B common stock of the Issuer. ( 3 )Prior to the Merger, the Reporting Person was granted restricted stock units (the "Founder Grant"), which, as a result of the Merger, are convertible into 20,009,224 shares of Class B Common Stock. Twenty-five percent of the shares subject to the Founder Grant vest upon the achievement of the earliest to occur of (i) the achievement of certain milestones relating to the Issuer's stock price or (ii) the achievement of certain performance-based milestones, in each case over the seven year period following September 16, 2021. 25% of the Founder Grant vested and 5,002,306 shares of Class B Common Stock were issued to the Reporting Person.

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).

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