Harsh Rungta - 15 Aug 2026 Form 4 Insider Report for Archer Aviation Inc. (ACHR)

Reporting relationship: Chief Accounting Officer
Issuer ticker: ACHR
Reported as of: 15 Aug 2026
Net transaction value: -$89,010
SEC form: 4
Accepted by SEC: 18 Aug 2026, 20:02:17 UTC
Prior SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Eric Lentell as attorney-in-fact for Harsh Rungta

Key filing fact

Harsh Rungta filed Form 4 for Archer Aviation Inc. (ACHR) on 18 Aug 2026.

Key facts

This page summarizes Harsh Rungta's Form 4 filing for Archer Aviation Inc. (ACHR).
5 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 18 Aug 2026, 20:02.

Change

Previous filing in this sequence was filed on 19 May 2026.
Current net transaction value: -$89,010.

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 0002064297 Primary reporting owner

Rungta Harsh

Relationship: Chief Accounting Officer
Address: C/O ARCHER AVIATION INC., 190 WEST TASMAN DRIVE, SAN JOSE
Signature: /s/ Eric Lentell as attorney-in-fact for Harsh Rungta
Signature date: 18 Aug 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: +21,754
Change %: +24%
Price: $0.000000^*
Shares after: 112,315
Date: 15 Aug 2026
Ownership: Direct
Footnotes: F1

ACHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +12,412
Change %: +11%
Price: $0.000000^*
Shares after: 124,727
Date: 15 Aug 2026
Ownership: Direct

ACHR transaction

Class A Common Stock

Sale

Transaction value: $89,010
Shares: -13,880
Change %: -11%
Price: $6.41
Shares after: 110,847
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F2, F3

Reported derivative securities

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

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -21,754
Change %: -14%
Price: $0.000000^*
Shares after: 130,518
Date: 15 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 21,754
Exercise price
Footnotes: F4, F5, F6

ACHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -12,412
Change %: -9.1%
Price: $0.000000^*
Shares after: 124,125
Date: 15 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 12,412
Exercise price
Footnotes: F4, F6, F7

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Includes 3,351 shares of Class A Common Stock acquired by the reporting person in one or more transactions with the issuer pursuant to its Employee Stock Purchase Plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c).

Footnote F2

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

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.32 to $6.485 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 range set forth in this footnote.

Footnote F4

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 F5

The award vested or vests as to: (i) 1/3 of the total award on March 1, 2026; and (ii) 1/12 of the total award quarterly thereafter on May 15, August 15, November 15, and March 1.

Footnote F6

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

Footnote F7

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