The ospreys were taken by the Asian company Y11 Sports & Media.
The Ospreys are "excited about the opportunities ahead" after Asia-based sports marketing group Y11 Sports & Media bought a 75.1 percent stake in the Welsh rugby union.
Ospreys President Rob Davies will remain in office as he and the pre-existing shareholders will collectively retain a 24.9% interest, with CEO James Davies-Yandle and financier Donald Tang also being directors. of the club.
A new holding company, Ospreys International Group, was created after the "multi-million dollar" deal, with all the financial benefits to move to the club.
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Davies said: "Since the arrival of regional rugby, ospreys have always tried to be their pioneers.
"We weren't afraid to do things differently and push the envelope. The announcement today is that we will do the same."
"It was essential to find a partner who shared our ambition and vision, but with cultural understanding, experience and resources to propel the region and the community into a new era.
"We had to ensure the success of the past and at the same time fully embrace the future and that is what we are doing together now. We are delighted with the opportunities that lie ahead."
The ospreys have won only two of their 12 Pro14 games this season and are currently at the bottom of Conference A, but in February they appointed former London rugby director Toby Booth as their new head coach this summer. .
Toby Booth takes over as head coach of the Ospreys this summer
Davies-Yandle, who founded and heads Y11 Sports & Media, said: "The potential of rugby has long been overlooked, as other sports have been more agile in taking advantage of business opportunities to foster success on the field with income.
"But the environment is changing fast and rugby is about to go through the same kind of development as other previous sports.
"Ospreys, from the start, has become one of the most exciting brands and teams in rugby. Of all the clubs we have seen, their potential to fully emerge and take the next step goes far beyond companions.
"We want to help him make this journey and be part of this journey by investing in a root and branch transformation of the Ospreys, to make sure he leads the next wave of the game."
"This is an exciting time for the Ospreys – their team, their supporters, the organization and rugby."