Sell4

Archer Aviation Inc.

ACHR

Total Value

$631.0K

Net $631.0K sold

Filing Date

Aug 21, 2026

1 transaction

Sales

$631.0K

1 transaction

Trade Summary

On Aug 20, 2026, Lentell Eric, Insider, sold $631.0K of Archer Aviation Inc. (ACHR) across 1 transaction. The filing covers Class A Common Stock and reflects net selling of $631.0K. Reported prices ranged from $6.31. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Price at the Time of the Trade

ACHR daily price with the insider's sale marked at $6.31.

Sold in the upper half of the 6-month range · about level with today's price.

Price data is delayed and provided for context only — not investment advice.

Insider Information

Name: Lentell Eric
Role: Insider
Location: SAN JOSE, CA

Filing Details

Filing Date: Aug 21, 2026
Transaction Date: Aug 20, 2026
Accession Number: 0002016416-26-000022
Form Type: 4
Net Trading Amount: -$631.0K

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Aug 20, 2026	Class A Common Stock	100,000	$6.31	Sale	$631.0K

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Footnotes

(F1)The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.
(F2)Following the reported transaction, in addition to the 85,011 shares of Class A Common Stock beneficially owned by the reporting person, the reporting person held restricted stock units representing contingent rights to receive up to an aggregate 435,687 shares of the Issuer's Class A Common Stock, which restricted stock units are subject to service-based vesting schedules and vest according to their respective terms.

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^*

Lentell Eric

(Last)

(First)

(Middle)

C/O ARCHER AVIATION INC.

190 WEST TASMAN DRIVE

(Street)

SAN JOSE

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 Strategy Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	08/20/2026		S⁽¹⁾		100,000	D	$6.31	85,011⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.

2. Following the reported transaction, in addition to the 85,011 shares of Class A Common Stock beneficially owned by the reporting person, the reporting person held restricted stock units representing contingent rights to receive up to an aggregate 435,687 shares of the Issuer's Class A Common Stock, which restricted stock units are subject to service-based vesting schedules and vest according to their respective terms.

	/s/ Eric Lentell	08/21/2026
	** 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 as rendered by the SEC from accession 0002016416-26-000022.

Archer Aviation Inc.

Trade Summary

Price at the Time of the Trade

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

Price at the Time of the Trade

SEC Form 4