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BCS

Notice of Proposed Sale · 144

Archer Aviation Inc.

ACHRNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Aug 17, 2026Accepted Aug 17, 2026, 4:41 PM EDTFiling CIK 1824502Accession 0001959173-26-006127
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
Archer Aviation Inc.
Issuer CIK
0001824502
SEC file number
001-39668
Phone
650-272-3233
Person for whose account securities are to be sold
Lyon Benjamin
Relationships to issuer
Officer
Street
190 WEST TASMAN DRIVE
City
SAN JOSE
State / country code
CA
Postal code
95134

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Class A50,188321,845.60770,023,80008/17/2026NYSEFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Class A08/14/2026Restricted Stock VestingIssuer50,188N08/14/2026Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 2 reported rows
SellerSecuritySale dateAmount soldGross proceeds
Benjamin LyonClass A05/18/2026142,589848,789.54
Benjamin LyonClass A05/19/2026133,139776,200.37

Seller — prior-sale row 1, entry 1

Name
Benjamin Lyon
Street
190 West Tasman Drive
City
San Jose
State / country code
CA
Postal code
95134

Seller — prior-sale row 2, entry 1

Name
Benjamin Lyon
Street
190 West Tasman Drive
City
San Jose
State / country code
CA
Postal code
95134

Prior-sale reporting

Nothing to report for the preceding three months
N

Remarks

Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.

Notice signature

Notice date
08/17/2026
Signed
/s/ Louis Kurnick, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Benjamin Lyon

Company context

Archer builds the aircraft and core technologies that will define the next era of flight for aerospace and defense.

Current securities

Historical securities (5)

Recent company filings

  1. Regulation FD DisclosureOct 2, 2026
  2. Regulation FD DisclosureSep 24, 2026
  3. 144 filingSep 21, 2026
  4. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing · Other EventsSep 4, 2026
  5. 144 filingAug 28, 2026

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