Archer Aviation (NYSE: ACHR) insider plans sale of 50K vested shares

Rhea-AI Filing Summary

Archer Aviation Inc. insider Benjamin Lyon filed a notice of proposed sale of 50,188 Class A shares through Fidelity Brokerage Services LLC, with an indicated value of $321,845.60, to be sold on or after August 17, 2026 on the NYSE. The shares are tied to restricted stock vesting that occurred on August 14, 2026 as compensation from the issuer. Over the prior three months, Lyon reported sales of 142,589 Class A shares for $848,789.54 on May 18, 2026 and 133,139 Class A shares for $776,200.37 on May 19, 2026.

Key Figures

Proposed shares to be sold: 50,188 shares Indicated value of proposed sale: $321,845.60 Recent sale on May 18, 2026: 142,589 shares; $848,789.54 +2 more

5 metrics

Proposed shares to be sold 50,188 shares Class A shares proposed for sale on or after August 17, 2026

Indicated value of proposed sale $321,845.60 Value associated with 50,188 Class A shares in the proposed NYSE sale

Recent sale on May 18, 2026 142,589 shares; $848,789.54 Class A shares of Archer Aviation Inc. sold by Benjamin Lyon

Recent sale on May 19, 2026 133,139 shares; $776,200.37 Class A shares of Archer Aviation Inc. sold by Benjamin Lyon

Restricted stock vesting date 08/14/2026 Vesting date for 50,188 Class A shares received as compensation

Key Terms

Form 144, restricted stock vesting, compensation

3 terms

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

restricted stock vesting financial

"Class A | 08/14/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

compensation financial

"08/14/2026 | Compensation"

FAQ

What share sale is Benjamin Lyon registering on Form 144 for ACHR?

Benjamin Lyon is registering a proposed sale of 50,188 Class A shares of Archer Aviation Inc. associated with restricted stock vesting on August 14, 2026, with planned sales on or after August 17, 2026 through Fidelity Brokerage Services.

What is the indicated value of the ACHR shares Benjamin Lyon plans to sell?

The planned sale covers Class A shares with an indicated value of $321,845.60. This amount relates to the 50,188 Archer Aviation Inc. shares listed in the Form 144 filing for proposed sale on or after August 17, 2026.

What past ACHR stock sales by Benjamin Lyon are disclosed in this Form 144?

The filing lists two recent sales: 142,589 Class A shares for $848,789.54 on May 18, 2026 and 133,139 Class A shares for $776,200.37 on May 19, 2026, both involving Archer Aviation Inc. stock.

How are the ACHR shares in Benjamin Lyon’s Form 144 related to compensation?

The 50,188 Class A shares in the proposed sale are linked to restricted stock vesting dated August 14, 2026. The issuer granted these shares as compensation, and Lyon is now registering them for potential sale.

On which market are Benjamin Lyon’s planned ACHR share sales expected to occur?

The proposed sale of 50,188 Class A shares of Archer Aviation Inc. is listed for execution on the NYSE. The broker identified is Fidelity Brokerage Services LLC, with the proposed sale date starting August 17, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/17/2026 - 04:43 PM Accepted by SEC EDGAR 08/17/2026 - 04:41 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	50188	321845.60	770023800	08/17/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	08/14/2026	Restricted Stock Vesting	Issuer			50188	08/14/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Benjamin Lyon 190 West Tasman Drive San Jose CA 95134	Class A	05/18/2026	142589	848789.54
Benjamin Lyon 190 West Tasman Drive San Jose CA 95134	Class A	05/19/2026	133139	776200.37

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)