Archer Aviation CTO gets 78,659 performance RSUs

Archer Aviation Inc. reported that Chief Technology Officer Thomas Paul Muniz acquired 78,659 shares of Class A common stock through a grant with no cash price per share.

Rhea-AI Filing Summary

Archer Aviation Inc. reported that Chief Technology Officer Thomas Paul Muniz acquired 78,659 shares of Class A common stock through a grant with no cash price per share. The shares reflect the vesting of the second of three tranches from a March 26, 2024 performance-based restricted stock unit award tied to relative total stockholder return over a defined performance period. On April 20, 2026, Archer’s compensation committee certified that this second tranche vested at 164.87% of the target amount for the two-year performance period from March 26, 2024 to March 26, 2026. Following this vesting event, Muniz directly holds 1,430,867 Class A shares.

Insider Trade Summary

Grant/Award: 78,659 shares

Grant/Award 1 txn

Insider Muniz Thomas Paul

Role CHIEF TECHNOLOGY OFFICER

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	78,659	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 1,430,867 shares (Direct)

Footnotes (2)

1. F1. The reported transaction represents the vesting of the second of three tranches of a March 26, 2024 performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee, which vests based on the achievement of a relative total stockholder return over a defined performance period (the "2024 Performance Award") and is subject to the reporting person's continued service through the vesting date.
2. F2. On April 20, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the vesting criteria of the second tranche of the 2024 Performance Award, resulting in one-third of the 2024 Performance Award vesting at 164.87% of the target amount granted for the two-year performance period beginning on March 26, 2024 and ending on March 26, 2026. The performance restricted stock units comprising the second tranche of the 2024 Performance Award will be settled for shares of the Issuer's Class A common stock shortly following the Certification Date.

Key Figures

Performance RSUs vested: 78,659 shares Shares held after transaction: 1,430,867 shares Vesting level vs target: 164.87% of target +2 more

5 metrics

Performance RSUs vested 78,659 shares Second tranche of 2024 Performance Award vested on April 20, 2026

Shares held after transaction 1,430,867 shares CTO Thomas Paul Muniz direct Class A holdings following vesting

Vesting level vs target 164.87% of target Second tranche of 2024 Performance Award for two-year performance period

Performance period March 26, 2024–March 26, 2026 Two-year relative total stockholder return measurement window

Number of tranches Three tranches Structure of March 26, 2024 performance-based restricted stock unit award

Key Terms

performance-based restricted stock unit, relative total stockholder return, vesting criteria, performance restricted stock units

4 terms

performance-based restricted stock unit financial

"the second of three tranches of a March 26, 2024 performance-based restricted stock unit award"

A performance-based restricted stock unit is a promise of company shares given to an employee that only becomes actual stock if specific performance targets are met and any required time at the company is completed. For investors, these awards matter because they can dilute existing shares when earned and signal management’s confidence or the company’s expected future performance, much like a bonus cheque that only clears when pre-set goals are reached.

relative total stockholder return financial

"which vests based on the achievement of a relative total stockholder return over a defined performance period"

vesting criteria financial

"the Issuer's compensation committee certified achievement of the vesting criteria of the second tranche"

performance restricted stock units financial

"The performance restricted stock units comprising the second tranche of the 2024 Performance Award will be settled"

Performance restricted stock units (PRSUs) are promises to deliver company shares to employees or executives only if the business meets specific performance targets and any time-based holding rules. Think of them as a bonus that converts into stock only after set goals are reached, so investors watch PRSUs for two reasons: they can dilute existing shares if paid out, and they signal how closely management’s pay is tied to company performance.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Archer Aviation (ACHR) disclose for its CTO?

Archer Aviation reported that CTO Thomas Paul Muniz acquired 78,659 Class A common shares at no cash cost. The shares came from a vesting performance-based restricted stock unit tranche granted on March 26, 2024 and certified on April 20, 2026.

How many Archer Aviation (ACHR) shares does the CTO hold after this Form 4?

After the reported transaction, CTO Thomas Paul Muniz directly holds 1,430,867 shares of Archer Aviation Class A common stock. This total reflects the addition of 78,659 vested performance-based restricted stock units from the second tranche of a 2024 award.

What performance conditions triggered the Archer Aviation CTO’s 2024 award vesting?

The vesting was based on achievement of a relative total stockholder return over a defined performance period. For the two-year period from March 26, 2024 to March 26, 2026, the second tranche of the 2024 Performance Award vested at 164.87% of its target amount.

How is the Archer Aviation (ACHR) 2024 Performance Award structured for the CTO?

The 2024 Performance Award to the CTO consists of three tranches of performance-based restricted stock units. The reported transaction covers the second tranche, which vests based on relative total stockholder return and requires continued service through each vesting date.

When will Archer Aviation settle the vested performance RSUs into shares?

Archer Aviation’s compensation committee certified the second tranche’s vesting criteria on April 20, 2026. The performance restricted stock units for this tranche will be settled for shares of Class A common stock shortly following that Certification Date, according to the disclosure.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/22/2026 - 08:03 PM EDT Learn about SEC filing dates

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 CALIFORNIA 95134

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	04/20/2026		A(1)(2)		78,659	A	$0	1,430,867	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 vesting of the second of three tranches of a March 26, 2024 performance-based restricted stock unit award granted to the reporting person by the Issuer's compensation committee, which vests based on the achievement of a relative total stockholder return over a defined performance period (the "2024 Performance Award") and is subject to the reporting person's continued service through the vesting date.

2. On April 20, 2026 (the "Certification Date"), the Issuer's compensation committee certified achievement of the vesting criteria of the second tranche of the 2024 Performance Award, resulting in one-third of the 2024 Performance Award vesting at 164.87% of the target amount granted for the two-year performance period beginning on March 26, 2024 and ending on March 26, 2026. The performance restricted stock units comprising the second tranche of the 2024 Performance Award will be settled for shares of the Issuer's Class A common stock shortly following the Certification Date.

	/s/ Eric Lentell, Attorney-in-Fact for Thomas Paul Muniz	04/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)