[Form 4] Archer Aviation Inc. Insider Trading Activity

Rhea-AI Filing Summary

Archer Aviation Inc. (ACHR) reported an insider equity transaction by its Chief Legal & Strategy Officer on a Form 4. On 11/15/2025, several tranches of restricted stock units (RSUs) were exercised, resulting in the acquisition of 22,866, 19,797, 8,946, and 26,096 shares of Class A common stock at an exercise price of $0 per share. On 11/17/2025, 41,490 shares of Class A common stock were sold at a weighted average price of $7.4948 per share to satisfy tax withholding obligations related to the RSU vesting. Following these transactions, the officer beneficially owned 83,733 shares of Archer Aviation Class A common stock directly.

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)
11/15/2025

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	11/15/2025		M		22,866	A	$0	70,384	D
Class A Common Stock	11/15/2025		M		19,797	A	$0	90,181	D
Class A Common Stock	11/15/2025		M		8,946	A	$0	99,127	D
Class A Common Stock	11/15/2025		M		26,096	A	$0	125,223	D
Class A Common Stock	11/17/2025		S(1)		41,490	D	$7.4948(2)	83,733	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)	11/15/2025		M			22,866	(4)	(5)	Class A Common Stock	22,866	$0	68,598	D
Restricted Stock Units	(3)	11/15/2025		M			19,797	(6)	(5)	Class A Common Stock	19,797	$0	98,982	D
Restricted Stock Units	(3)	11/15/2025		M			8,946	(7)	(5)	Class A Common Stock	8,946	$0	80,509	D
Restricted Stock Units	(3)	11/15/2025		M			26,096	(8)	(5)	Class A Common Stock	26,096	$0	208,768	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 $7.245 to $7.87, 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, 2023; 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 1/16 of the total award beginning on May 15, 2023 and thereafter quarterly on August 15th, November 15th, March 1st, and May 15th.

7. 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.

8. 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	11/18/2025
	** Signature of Reporting Person	Date
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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FAQ

What insider transaction did Archer Aviation (ACHR) disclose on this Form 4?

The filing reports RSU exercises on 11/15/2025 and a sale of 41,490 Archer Aviation Class A shares on 11/17/2025 by the Chief Legal & Strategy Officer.

How many Archer Aviation (ACHR) shares were sold and at what price?

The officer sold 41,490 shares of Class A common stock at a weighted average price of $7.4948 per share, with individual trades ranging from $7.245 to $7.87.

Why were Archer Aviation (ACHR) shares sold in this Form 4 filing?

The filing states the 41,490 shares were sold to satisfy the reporting person's tax withholding obligations arising from the vesting of restricted stock units, in line with company policy.

How many Archer Aviation shares does the insider own after these transactions?

After the reported transactions, the Chief Legal & Strategy Officer beneficially owned 83,733 shares of Archer Aviation Class A common stock directly.

What RSU activity is disclosed for Archer Aviation (ACHR) in this Form 4?

On 11/15/2025, multiple RSU awards were converted into Class A common stock in amounts of 22,866, 19,797, 8,946, and 26,096 shares, each at an exercise price of $0 per share.

How do Archer Aviation’s RSUs for this insider vest over time?

The footnotes explain that the RSU awards vest in quarterly installments on dates including May 15, August 15, November 15, and March 1, subject to continued service, with specific schedules such as 1/4 on an initial vesting date and 1/16 or 1/12 quarterly thereafter.