Archer announces expiration of Hart-Scott-Rodino waiting period for its acquisition of Boeing's Wisk Aero, Insitu and SkyGrid subsidiaries

Archer Aviation Inc. today announced the expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (HSR Act), with respect to the previously announced agreements pursuant to which Archer will acquire Boeing's Wisk Aero, SkyGrid and Insitu subsidiaries. The expiration of the HSR Act waiting period occurred at 11:59 p.m. EDT on September 18, 2026.

The expiration of the HSR Act waiting period satisfies a key condition to closing the transaction. Completion of the transaction remains subject to the satisfaction or waiver of other customary closing conditions, including receipt of certain other regulatory approvals, which are underway. The transaction is expected to close by the end of 2026.

The transaction is set to create an end-to-end physical AI platform for aerospace and defence, combining Wisk, Insitu and SkyGrid's pioneering autonomy, electric vertical take off and landing (eVTOL) aircraft, unmanned aircraft systems (UAS) and airspace intelligence technologies with Archer's product suite and leading purpose-built AI foundation model, ZEE.