Archer Aviation (ACHR) CTO earns 16,358 performance-based RSU shares

Rhea-AI Filing Summary

Archer Aviation Inc. reported that Chief Technology Officer Thomas Paul Muniz acquired 16,358 shares of Class A common stock as a stock award, with no cash paid per share. This reflects the first of three tranches from a 2025 performance-based restricted stock unit (PRSU) award.

On March 10, 2026, the compensation committee certified achievement of the first tranche of the 2025 PRSU Award, which became earned at 53.73% of the target amount granted. The performance RSUs in this tranche are now fully vested and were settled into shares on the certification date, bringing Muniz’s direct holdings to 1,361,788 shares.

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)
03/10/2026

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	03/10/2026		A(1)(2)		16,358	A	$0	1,361,788	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. The reported transaction represents the certification of achievement of the first of three tranches of a performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee on February 17, 2025 (the "2025 PRSU Award"). Vesting of each tranche of the 2025 PRSU Award is based on relative total stockholder return and is subject to the reporting person's continued service through the certification date of achievement of the relevant tranche.

2. On March 10, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the first tranche of the 2025 PRSU Award, resulting in one-third of the 2025 PRSU Award becoming earned at 53.73% of the target amount granted. The performance restricted stock units comprising the first tranche of the 2025 PRSU Award so earned are fully vested and may be settled for shares of the Issuer's Class A common stock on the Certification Date.

	/s/ Eric Lentell, Attorney-in-Fact for Thomas Paul Muniz	03/12/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

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

Archer Aviation reported that CTO Thomas Paul Muniz received 16,358 shares of Class A common stock as a performance-based stock award. The shares were issued at no cash cost as part of a previously granted 2025 performance RSU award.

How many Archer Aviation (ACHR) shares did Thomas Paul Muniz hold after this Form 4 transaction?

After the transaction, Thomas Paul Muniz directly held 1,361,788 shares of Archer Aviation Class A common stock. This total reflects the addition of 16,358 fully vested shares earned from the first tranche of his 2025 performance RSU award.

What is the 2025 performance-based RSU award mentioned in Archer Aviation’s Form 4?

The 2025 PRSU Award is a performance-based restricted stock unit grant given to Thomas Paul Muniz on February 17, 2025. It is split into three tranches, with vesting based on relative total stockholder return and continued service through each tranche’s certification date.

How was the first tranche of the 2025 PRSU Award for Archer Aviation’s CTO determined?

On March 10, 2026, Archer Aviation’s compensation committee certified that the first tranche of the 2025 PRSU Award was earned at 53.73% of its target. Those performance RSUs became fully vested and were settled into shares of Class A common stock on the same date.

Is the Archer Aviation (ACHR) Form 4 transaction an open-market purchase or a compensation grant?

The Form 4 transaction is a compensation-related stock award, not an open-market purchase. Thomas Paul Muniz acquired 16,358 shares at a stated price of $0.0000 per share, reflecting earned and vested performance RSUs from his 2025 PRSU Award.

What performance conditions apply to Thomas Paul Muniz’s 2025 PRSU Award at Archer Aviation?

Each tranche of the 2025 PRSU Award vests based on Archer Aviation’s relative total stockholder return and the CTO’s continued service through the relevant certification date. The first tranche was certified as earned at 53.73% of its target on March 10, 2026.