Sec Form 4 Filing - Perkins Tosha @ Archer Aviation Inc. - 2025-03-28

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 Perkins Tosha 2. Issuer Name and Ticker or Trading Symbol Archer Aviation Inc. [ ACHR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) CHIEF PEOPLE PARTNERSHIPS OFF. (Last) (First) (Middle) C/O ARCHER AVIATION INC., 190 WEST TASMAN DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 03/28/2025 (Street) SAN JOSE, CA95134 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 Class A Common Stock 03/28/2025 M 63,612 A $ 0 296,008 D Class A Common Stock 03/31/2025 S( 1 ) 33,335 D $ 7.0353 ( 2 ) 262,673 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 Performan ce Restricted Stock Units ( 3 ) 03/28/2025 M 63,612 ( 4 ) ( 5 ) Class A Common Stock 63,612 $ 0 127,228 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Perkins Tosha C/O ARCHER AVIATION INC. 190 WEST TASMAN DRIVE SAN JOSE, CA95134 CHIEF PEOPLE PARTNERSHIPS OFF. Signatures /s/ Eric Lentell, Attorney-in-Fact for Tosha Perkins 04/01/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares of Class A Common Stock of the Issuer sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of restricted stock units. In accordance with company policy, shares are automatically sold to cover such obligations. ( 2 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.92 to $7.185, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. ( 3 )Each performance-based restricted stock unit ("PRSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock upon the achievement of certain performance criteria and pursuant to the terms of the reporting person's agreement with the Issuer. ( 4 )On March 28, 2025, the Issuer's compensation committee certified achievement of the first tranche of the PRSU award granted on March 26, 2024 (the "2024 PRSU Award") at the maximum level, resulting in one-third of the 2024 PRSU Award becoming earned at 200% of the target amount granted. ( 5 )The remaining tranches of the PRSU Award may expire if the relevant performance criteria are not achieved within the applicable performance period for such tranche. The performance period for the second and third tranches ends on March 26, 2026 and 2027, respectively.

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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