Archer Aviation insider RSU vesting and tax sale disclosed

Rhea-AI Filing Summary

Archer Aviation Inc. (ACHR) reported insider activity by its Chief Technology Officer, Thomas Paul Muniz. On 11/15/2025, multiple restricted stock unit (RSU) awards were converted into Class A Common Stock, including 143,750, 8,946, and 7,612 shares at an exercise price of $0. These RSUs each represent a contingent right to receive one share and vest over multi-year schedules tied to continued service.

On 11/17/2025, Muniz sold 90,648 Class A shares at a weighted average price of $7.4948 per share to satisfy tax withholding obligations triggered by the RSU vesting. Following these transactions, he directly owned 1,397,129 Class A shares and continued to hold substantial unvested RSUs.

Insider Trade Summary

Net Seller: 90,648 shares ($679,389)

Net Sell 7 txns

Insider Muniz Thomas Paul

Role CHIEF TECHNOLOGY OFFICER

Sold 90,648 shs ($679K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	90,648	$7.4948	$679K
Exercise	Restricted Stock Units	143,750	$0.00	--
Exercise	Restricted Stock Units	8,946	$0.00	--
Exercise	Restricted Stock Units	7,612	$0.00	--
Exercise	Class A Common Stock	143,750	$0.00	--
Exercise	Class A Common Stock	8,946	$0.00	--
Exercise	Class A Common Stock	7,612	$0.00	--

Holdings After Transaction: Class A Common Stock — 1,397,129 shares (Direct); Restricted Stock Units — 862,500 shares (Direct)

Footnotes (1)

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. 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. 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. The award vested or vests as to: (i) 1/4 of the total award on May 15, 2024; and (ii) 1/16 of the total award quarterly thereafter on March 1st, May 15th, August 15th, and November 15th. These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date. The award vested or vests as 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. 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.

Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Muniz Thomas Paul

(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 TECHNOLOGY 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		143,750	A	$0	1,471,219	D
Class A Common Stock	11/15/2025		M		8,946	A	$0	1,480,165	D
Class A Common Stock	11/15/2025		M		7,612	A	$0	1,487,777	D
Class A Common Stock	11/17/2025		S(1)		90,648	D	$7.4948(2)	1,397,129	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			143,750	(4)	(5)	Class A Common Stock	143,750	$0	862,500	D
Restricted Stock Units	(3)	11/15/2025		M			8,946	(6)	(5)	Class A Common Stock	8,946	$0	80,509	D
Restricted Stock Units	(3)	11/15/2025		M			7,612	(7)	(5)	Class A Common Stock	7,612	$0	60,889	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 May 15, 2024; and (ii) 1/16 of the total award quarterly thereafter on March 1st, May 15th, August 15th, and November 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, 2024, and thereafter quarterly on August 15th, November 15th, March 1st, and May 15th.

7. 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, Attorney-in-Fact for Thomas Paul Muniz	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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

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

The filing reports that Archer Aviation’s Chief Technology Officer, Thomas Paul Muniz, had several restricted stock unit (RSU) awards convert into Class A Common Stock on 11/15/2025 and then sold a portion of the resulting shares on 11/17/2025.

How many Archer Aviation (ACHR) shares did the CTO sell?

On 11/17/2025, the CTO sold 90,648 shares of Archer Aviation Class A Common Stock at a weighted average price of $7.4948 per share.

Why were Archer Aviation (ACHR) shares sold by the CTO?

The filing states that the 90,648 shares were sold to satisfy the reporting person’s tax withholding obligations arising from the vesting of restricted stock units, with shares automatically sold under company policy to cover those obligations.

How many Archer Aviation (ACHR) shares does the CTO own after these transactions?

After the reported transactions, the CTO directly owned 1,397,129 shares of Archer Aviation Class A Common Stock.

What RSU activity did Archer Aviation (ACHR) disclose for the CTO?

On 11/15/2025, RSU awards covering 143,750, 8,946, and 7,612 units were reported as exercised into Class A Common Stock at an exercise price of $0, with the RSUs vesting over scheduled dates tied to continued service.

Do the Archer Aviation (ACHR) restricted stock units have an expiration date?

The filing notes that these restricted stock units do not expire; they either vest according to their schedules or are cancelled prior to the vesting date.