Eric Lentell - 15 May 2026 Form 4 Insider Report for Archer Aviation Inc. (ACHR)

Reporting relationship: Chief Legal & Strategy Officer
Issuer ticker: ACHR
Reported as of: 15 May 2026
Net transaction value: -$528,980
SEC form: 4
Accepted by SEC: 19 May 2026, 20:13:20 UTC
Prior SEC filing: 22 Apr 2026
Next SEC filing: 15 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Lentell

Key filing fact

Eric Lentell filed Form 4 for Archer Aviation Inc. (ACHR) on 19 May 2026.

Key facts

This page summarizes Eric Lentell's Form 4 filing for Archer Aviation Inc. (ACHR).
15 reported transactions and 7 derivative rows are listed below.
Accepted by SEC: 19 May 2026, 20:13.

Change

Previous filing in this sequence was filed on 22 Apr 2026.
Current net transaction value: -$528,980.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002016416 Primary reporting owner

Lentell Eric

Relationship: Chief Legal & Strategy Officer
Address: C/O ARCHER AVIATION INC., 190 WEST TASMAN DRIVE, SAN JOSE
Signature: /s/ Eric Lentell
Signature date: 19 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +7,301
Change %: +5.7%
Price: $0.000000^*
Shares after: 136,079
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +22,866
Change %: +17%
Price: $0.000000^*
Shares after: 158,945
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +19,796
Change %: +12%
Price: $0.000000^*
Shares after: 178,741
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +8,946
Change %: +5%
Price: $0.000000^*
Shares after: 187,687
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +26,096
Change %: +14%
Price: $0.000000^*
Shares after: 213,783
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +15,437
Change %: +7.2%
Price: $0.000000^*
Shares after: 229,220
Date: 15 May 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Sale

Transaction value: $242,244
Shares: -39,967
Change %: -17%
Price: $6.06
Shares after: 189,253
Date: 15 May 2026
Ownership: Direct
Footnotes: F1, F2

ACHR transaction

Class A Common Stock

Sale

Transaction value: $286,736
Shares: -48,169
Change %: -25%
Price: $5.95
Shares after: 141,084
Date: 18 May 2026
Ownership: Direct
Footnotes: F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ACHR transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +87,617
Change %
Price: $0.000000^*
Shares after: 87,617
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 87,617
Exercise price
Footnotes: F5, F6, F7

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -7,301
Change %: -8.3%
Price: $0.000000^*
Shares after: 80,316
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 7,301
Exercise price
Footnotes: F5, F6, F7

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -22,866
Change %: -50%
Price: $0.000000^*
Shares after: 22,866
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 22,866
Exercise price
Footnotes: F5, F7, F8

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -19,796
Change %: -25%
Price: $0.000000^*
Shares after: 59,390
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 19,796
Exercise price
Footnotes: F5, F7, F9

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -8,946
Change %: -13%
Price: $0.000000^*
Shares after: 62,618
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 8,946
Exercise price
Footnotes: F5, F7, F10

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -26,096
Change %: -14%
Price: $0.000000^*
Shares after: 156,576
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 26,096
Exercise price
Footnotes: F5, F7, F11

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -15,437
Change %: -9.1%
Price: $0.000000^*
Shares after: 154,364
Date: 15 May 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 15,437
Exercise price
Footnotes: F5, F7, F12

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 12 footnotes

Footnote F1

Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of performance restricted stock units, which was separately reported on a Form 4 filed with the U.S. Securities and Exchange Commission on April 22, 2026.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.005 to $6.135 per share, 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 ranges set forth in this footnote and in footnote 4 of this Form 4.

Footnote F3

Represents shares of Class A Common Stock sold to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.87 to $6.13 per share, inclusive.

Footnote F5

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.

Footnote F6

The award shall vest as to 1/12 of the total award beginning on May 15, 2026, and thereafter quarterly on August 15th, November 15th, March 1st, May 15th.

Footnote F7

These restricted stock units do not expire; they either vest or are cancelled prior to the vesting date.

Footnote F8

The award vested or vests as to: (i) 1/4 of the total award on August 15, 2023; and (ii) 1/16 of the total award quarterly thereafter on November 15, March 1, May 15, and August 15.

Footnote F9

The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2023, and thereafter on August 15, November 15, March 1, and May 15.

Footnote F10

The award vested or vests quarterly as to 1/16 of the total award, with the first tranche vested on May 15, 2024, and thereafter on August 15, November 15, March 1, and May 15.

Footnote F11

The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2025, and thereafter on May 15, August 15, November 15, and March 1.

Footnote F12

The award vested or vests quarterly as to 1/12 of the total award, with the first tranche vested on March 1, 2026, and thereafter on May 15, August 15, November 15, and March 1.