Archer Aviation (ACHR) legal chief earns 18,695-share PRSU vest

Rhea-AI Filing Summary

Archer Aviation Inc. reported that Chief Legal & Strategy Officer Eric Lentell acquired 18,695 shares of Class A common stock at no cost through a performance-based equity award. This increased his direct holdings to 158,178 shares.

The shares relate to the first of three tranches under a 2025 performance-based restricted stock unit award granted on February 17, 2025. On March 10, 2026, the compensation committee certified that this first tranche was earned at 53.73% of its target amount, causing those units to fully vest and become settleable in Class A common stock on the certification date.

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)
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)		18,695	A	$0	158,178	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	03/12/2026
	** 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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FAQ

What insider transaction did Archer Aviation (ACHR) report for Eric Lentell?

Archer Aviation reported that Chief Legal & Strategy Officer Eric Lentell acquired 18,695 Class A shares via a performance-based equity award. The grant came at no cash cost and reflects vesting of the first tranche of his 2025 performance-based restricted stock unit award.

How many Archer Aviation (ACHR) shares does Eric Lentell hold after this Form 4?

Following the reported transaction, Eric Lentell directly holds 158,178 shares of Archer Aviation Class A common stock. This total includes the 18,695 shares earned from the first tranche of his 2025 performance-based restricted stock unit award that vested on March 10, 2026.

What triggered the 18,695-share award to Eric Lentell at Archer Aviation (ACHR)?

The award was triggered when Archer Aviation’s compensation committee certified achievement of the first tranche of Lentell’s 2025 performance-based RSU award. That tranche became earned at 53.73% of its target, causing the corresponding units to fully vest and be settleable in Class A common stock on March 10, 2026.

How is Eric Lentell’s 2025 PRSU award at Archer Aviation (ACHR) structured?

The 2025 performance-based restricted stock unit award consists of three tranches. Each tranche vests based on relative total stockholder return and requires Lentell’s continued service through the relevant certification date. The Form 4 reflects only the certification and vesting of the first tranche at 53.73% of target.

Did Eric Lentell pay cash for the 18,695 Archer Aviation (ACHR) shares reported?

No cash changed hands for the 18,695 shares; they were acquired at a stated price of $0.0000 per share. The shares resulted from vesting of performance-based restricted stock units, earned after the compensation committee certified performance for the first tranche of his 2025 PRSU award.