Archer Aviation (ACHR)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-20 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Archer Aviation Inc. (ACHR) CIK: 0001824502 --- Reporting Owner --- Name: Lentell Eric CIK: 0002016416 Role: Officer (Chief Strategy Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-08-20 | Code: S (Open market sale) Shares: -100,000 | Price: $6.31 Total Value: $631,000.00 Shares Owned After: 85,011 | Ownership: D (Direct) 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. --- Footnotes (Complete Index) --- 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. --- Signature --- /s/ /s/ Eric Lentell (2026-08-21)