[Form 4] Archer Aviation Inc. Insider Trading Activity

Rhea-AI Filing Summary

Eric Lentell, Chief Legal & Strategy Officer of Archer Aviation Inc. (ACHR), reported vesting of multiple restricted stock unit awards on 08/15/2025 that converted to Class A common stock in several tranches totaling the amounts shown in the filing. On 08/18/2025 the reporting person sold 48,936 shares to satisfy tax withholding obligations; the sale was completed at a weighted average price of $9.8295 per share with execution prices ranging from $9.62 to $10.21.

The Form 4 shows the mechanics: restricted stock units vested and were converted to Class A common stock, shares were automatically sold to cover taxes under company policy, and the reporting person reported beneficial ownership levels following these transactions as indicated in the filing.

Insights

Securities Analyst

TL;DR: Executive RSUs vested and a tax-withholding sale reduced holdings; transaction sizes and prices are disclosed precisely.

The filing documents the vesting of multiple restricted stock units on 08/15/2025 that converted into Class A common stock and the subsequent sale on 08/18/2025 of 48,936 shares to satisfy tax withholding. The sale price is provided as a weighted average of $9.8295, with trade prices between $9.62 and $10.21. The form lists resulting beneficial ownership figures after the transactions. These disclosures are routine for executive compensation-related vesting and tax-cover sales and provide clear, transaction-level transparency for investor records.

Corporate Governance Expert

TL;DR: Vesting schedule and automatic sell-to-cover for tax obligations are disclosed; governance processes appear followed.

The Form 4 indicates that the reported restricted stock units vested according to pre-established schedules and that shares were sold in accordance with company policy to satisfy withholding obligations. The filing reiterates that each RSU converts to one share and notes vesting cadence and non-expiration terms where applicable. Signature and explanatory footnotes provide customary details required under Section 16 reporting standards.

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lentell Eric

(Last) (First) (Middle)

C/O ARCHER AVIATION INC.

190 WEST TASMAN DRIVE

(Street)

SAN JOSE CA 95134

(City) (State) (Zip)

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 Legal & Strategy Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	08/15/2025		M		18,750	A	$0	18,750	D
Class A Common Stock	08/15/2025		M		22,866	A	$0	41,616	D
Class A Common Stock	08/15/2025		M		19,796	A	$0	61,412	D
Class A Common Stock	08/15/2025		M		8,946	A	$0	70,358	D
Class A Common Stock	08/15/2025		M		26,096	A	$0	96,454	D
Class A Common Stock	08/18/2025		S(1)		48,936	D	$9.8295(2)	47,518	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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
Restricted Stock Units	(3)	08/15/2025		M			18,750	(4)	(5)	Class A Common Stock	18,750	$0	0	D
Restricted Stock Units	(3)	08/15/2025		M			22,866	(6)	(5)	Class A Common Stock	22,866	$0	91,464	D
Restricted Stock Units	(3)	08/15/2025		M			19,796	(7)	(5)	Class A Common Stock	19,796	$0	118,779	D
Restricted Stock Units	(3)	08/15/2025		M			8,946	(8)	(5)	Class A Common Stock	8,946	$0	89,455	D
Restricted Stock Units	(3)	08/15/2025		M			26,096	(9)	(5)	Class A Common Stock	26,096	$0	234,864	D

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 $9.62 to $10.21, 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 restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.

4. The award vested or vests as to: (i) 1/4 of the total award on August 15, 2022; and (ii) 1/16 of the total award quarterly thereafter on November 15th, March 1st, May 15th, and August 15th.

5. These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

6. The award vested or vests as to: (i) 1/4 of the total award on August 15, 2023; and (ii) 1/16 of the total award quarterly thereafter on November 15th, March 1st, May 15th, and August 15th.

7. The award vested or vests as to 1/16 of the total award beginning on May 15, 2023 and thereafter quarterly on August 15th, November 15th, March 1st, and May 15th.

8. The award vested or vests at to 1/16 of the total award beginning on May 15, 2024, and thereafter quarterly on August 15th, November 15th, March 1st, and May 15th.

9. The award vested or vests as to 1/12 of the total award beginning on March 1, 2025, and thereafter quarterly on May 15th, August 15th, November 15th, and March 1st.

	/s/ Eric Lentell	08/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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