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Milestone note Aug 10, 2026

Archer buys Boeing's Wisk, Insitu and SkyGrid — Boeing takes 19.75% of Archer instead of cash

Archer Aviation signed a definitive agreement to acquire Boeing's Wisk Aero, Insitu and SkyGrid, paying in equity: Boeing gets a 19.75% stake plus warrants, potential follow-on equity and a board nominee. The deal adds a profitable defense business with more than $200M of annual revenue and is expected to close by end-2026.

Archer Aviation entered a definitive equity purchase agreement on 9 August to acquire all equity in three Boeing subsidiaries: Wisk Aero, the autonomous eVTOL developer; SkyGrid, an airspace-integration and traffic-management platform; and Insitu, a maker of unmanned aircraft systems. Boeing is paid in Archer stock — a 19.75% stake plus warrants and potential follow-on equity — and can nominate a director. The two also signed a collaboration and technology-sharing agreement preserving Boeing's access to Wisk's autonomous-flight technology for its own commercial and defense programs. The acquired units bring a profitable defense business with more than $200M in annual revenue. Closing is expected by the end of 2026, subject to regulatory conditions.

Why it matters

Archer just absorbed its most credible autonomy rival and turned a pre-revenue certification story into one with a cash-generating defense arm attached. Wisk was the pilotless bet — Boeing-funded, aiming straight at autonomous passenger flight while Archer and Joby fly piloted aircraft first; owning it removes a competitor and buys the autonomy roadmap rather than building it. Paying in equity is the other half of the story: Archer conserves cash at the price of handing a fifth of the company to Boeing, which converts Boeing from rival-funder to largest strategic shareholder and gets Boeing the technology access without the capital burden. For a sector where every player is pre-certification and cash-hungry, consolidation arriving before commercial service says the funding environment, not the technology, is setting the pace.

What to watch

Whether the deal clears regulators by year-end, whether Insitu's defense revenue actually offsets Archer's certification spend, and what happens to Wisk's independent autonomous-aircraft programme inside Archer.

Who's involved