OSHKOSH, Wisconsin — Sonex Aviation has reopened under new ownership.
The company, which shut down unexpectedly March 27, 2026, has been acquired by ON Capital, Inc., led by aviator and general contractor Stephen Osborne. He has acquired all the assets of Sonex, including the Sonex Aerospace and AeroConversions line of products.
He reports the doors have reopened, “the lights are on, crews are working and kits are moving.”
“We are not coming back the way we left,” he continued. “We are coming back better. The next chapter is powered by a focused, experienced team, assembled to streamline operations, improve production efficiency, and elevate our customers to an exceptional builder experience.”
The purchase has been endorsed by company founder John T. Monnett, Jr.
“Stephen’s team has the capital, the conviction, and the love of flight to take Sonex further than it has ever been,” he said. “I’m proud to support this team going forward.”
Mark Schaible, who previously owned by company, has been named Lead Designer of Sonex Aviation.
“Freed from the burdens of day-to-day administration, Mark now turns his full attention to what he does best — designing the aircraft our customers love, refining the kits they build, and supporting the pilots who fly them,” the new owners stated.
Osborne is a third-generation aviator, warbird pilot, and flight school owner, who said letting Sonex disappear “was never an option.”
“It’s an absolute honor to carry on the proud legacy of the Sonex brand,” Osborne said. “Sonex is part of how this country builds pilots and how everyday people get into the sky.”
“To every customer with a deposit on the books — get your shop space ready. We are open, we are building, and your kit is coming.”
Osborne notes that the company holds 80 pre-orders for the new Sonex High Wing, adding tail kits will resume shipping in May 2026, with full kits expected to ship mid-summer.
“The backlog is being cleared,” he said. “The factory is expected to be at full production within the next few weeks.”
For more information: SonexAviation.com, SonexAircraft.com
This is Great News..! It’s always sad to hear about an aviation driven company that has fallen on hard times. Kudos to the players that were involved in Keeping Sonex in the Air…