Thomas Paul Muniz - 15 Nov 2025 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: 15 Nov 2025
Net transactions value: -$679,389
Form type: 4
Filing time: 18 Nov 2025, 20:38:08 UTC
Previous filing: 19 Aug 2025
Next filing: 06 Jan 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	18 Nov 2025	0001882348

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACHR	Class A Common Stock	Options Exercise	$0	+143,750	+11%	$0.000000	1,471,219	15 Nov 2025	Direct
transaction	ACHR	Class A Common Stock	Options Exercise	$0	+8,946	+0.61%	$0.000000	1,480,165	15 Nov 2025	Direct
transaction	ACHR	Class A Common Stock	Options Exercise	$0	+7,612	+0.51%	$0.000000	1,487,777	15 Nov 2025	Direct
transaction	ACHR	Class A Common Stock	Sale	$679,389	-90,648	-6.1%	$7.49	1,397,129	17 Nov 2025	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ACHR	Restricted Stock Units	Options Exercise	$0	-143,750	-14%	$0.000000	862,500	15 Nov 2025	Class A Common Stock	143,750		Direct	F3, F4, F5
transaction	ACHR	Restricted Stock Units	Options Exercise	$0	-8,946	-10%	$0.000000	80,509	15 Nov 2025	Class A Common Stock	8,946		Direct	F3, F5, F6
transaction	ACHR	Restricted Stock Units	Options Exercise	$0	-7,612	-11%	$0.000000	60,889	15 Nov 2025	Class A Common Stock	7,612		Direct	F3, F5, F7

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

Explanation of Responses:

Id	Content
F1	Represents shares of Class A Common Stock of the issuer sold to satisfy the reporting person's tax withholding obligations, which were incurred in connection with the vesting of restricted stock units. In accordance with company policy, shares are automatically sold to cover such obligations.
F2	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.245 to $7.87, 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.
F3	Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to the reporting person's continued status as a service provider to the Issuer.
F4	The award vested or vests as to: (i) 1/4 of the total award on May 15, 2024; and (ii) 1/16 of the total award quarterly thereafter on March 1st, May 15th, August 15th, and November 15th.
F5	These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.
F6	The award vested or vests as to 1/16 of the total award beginning on May 15, 2024, and thereafter quarterly on August 15th, November 15th, March 1st, and May 15th.
F7	The award vested or vests as to 1/12 of the total award beginning on March 1, 2025, and thereafter quarterly on May 15th, August 15th, November 15th, and March 1st.