Deepening the partnership between the two companies "demonstrates how Stellantis is pushing the boundaries to provide sustainable freedom of mobility, from the road to the sky," he continued.
The move "places Archer in a strong position to be first to market," said Adam Goldstein, founder and CEO of Archer, in the statement.
"Our two companies are taking these important steps together to realize a once-in-a-generation opportunity to redefine urban transportation."
Stellantis also plans to increase its equity stake in Archer by buying back shares on the market.
Archer has already received a pre-order from US carrier United Airlines for 200 vehicles.
The plan is for these aircraft to fly between New York and Newark Airport initially, then expand to other cities such as Los Angeles, Miami and San Francisco where United has a significant presence.Stellantis also plans to increase its equity stake in Archer by buying back shares on the market.