Thomas Paul Muniz - 10 Mar 2026 Form 4 Insider Report for Archer Aviation Inc. (ACHR)

Role: CHIEF TECHNOLOGY OFFICER
Signature: /s/ Eric Lentell, Attorney-in-Fact for Thomas Paul Muniz
Issuer symbol: ACHR
Transactions as of: 10 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 12 Mar 2026, 20:26:05 UTC
Previous filing: 09 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Muniz Thomas Paul	CHIEF TECHNOLOGY OFFICER	C/O ARCHER AVIATION INC., 190 WEST TASMAN DRIVE, SAN JOSE	/s/ Eric Lentell, Attorney-in-Fact for Thomas Paul Muniz	12 Mar 2026	0001882348

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACHR	Class A Common Stock	Award		+16,358	+1.2%	$0.000000^*	1,361,788	10 Mar 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	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.

Content

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.

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.