Tax sale by Archer Aviation (ACHR) CTO covers RSU vesting

Rhea-AI Filing Summary

Archer Aviation Inc. Chief Technology Officer Thomas Paul Muniz reported selling 94,725 shares of Class A common stock in an open-market transaction at a weighted average price of $6.461 per share on March 5, 2026. The sale was made to satisfy tax withholding obligations related to vesting restricted stock units. After this transaction and a one-share administrative correction, he held 1,345,430 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^*

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)
03/05/2026

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	03/05/2026		S(1)		94,725	D	$6.461(2)	1,345,430(3)	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

Explanation of Responses:

1. Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units, which vesting was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on March 3, 2026.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.315 to $6.775 per share, 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. For clarity, the total reported in Table I after giving effect to the reported transaction has been corrected to reflect one additional share not included in the reporting person's previous Form 4 filed on March 3, 2026, due to administrative error.

	/s/ Eric Lentell, Attorney-in-Fact for Thomas Paul Muniz	03/09/2026
	** Signature of Reporting Person	Date
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FAQ

What insider transaction did Archer Aviation (ACHR) report for Thomas Paul Muniz?

Archer Aviation Chief Technology Officer Thomas Paul Muniz reported selling 94,725 shares of Class A common stock. The sale was an open-market transaction used to cover tax withholding obligations from vesting restricted stock units and was recorded on March 5, 2026.

At what price were the Archer Aviation (ACHR) shares sold in this Form 4 filing?

The reported weighted average sale price was $6.461 per Archer Aviation Class A share. Footnotes explain shares were sold in multiple transactions, with prices ranging from $6.315 to $6.775 per share, and detailed trade breakdowns are available upon request.

Why did Archer Aviation CTO Thomas Paul Muniz sell 94,725 ACHR shares?

The shares were sold to satisfy tax withholding obligations arising from the vesting of restricted stock units. The vesting itself had been separately reported on a prior Form 4, and this transaction specifically addresses the related tax requirements, according to the filing footnotes.

How many Archer Aviation (ACHR) shares does Thomas Paul Muniz own after the reported sale?

After the reported transaction, Thomas Paul Muniz directly owned 1,345,430 shares of Archer Aviation Class A common stock. The filing notes that this total includes a correction of one additional share that had been omitted from a previous Form 4 due to administrative error.

What correction was disclosed in this Archer Aviation (ACHR) Form 4 filing?

The filing states that the total number of shares reported after the transaction was corrected by one additional share. This adjustment fixes an administrative error in a previous Form 4, ensuring the current post-transaction holding of 1,345,430 shares is accurate.

How were the Archer Aviation (ACHR) share sale prices structured in this insider trade?

The filing reports a weighted average price of $6.461 per share for the 94,725 shares sold. It clarifies that the sale occurred in multiple transactions between $6.315 and $6.775 per share, and detailed price-by-trade information is available upon request.