The official announcement was made this morning at the newly renovated Cheney Stadium.
Success, to me, is making this the best baseball stadium it can be, and the best fan experience it can be, Thomsen, 54, said.
Thomsen is a Tacoma native and a wireless communications executive who currently lives in Bellevue. He said his stake in the team is more than a third, and that he is actively looking to add new partners to the group in the next few months.
In December, the Baseball Club of Tacoma entered a preliminary letter of intent to begin negotiations to buy the Rainiers from SDL Baseball Partners, led by Kirby Schlegel. Thomsen said his group gave the Schlegels a March 31 deadline and that the deal got final approval on that day.
It was a little bit of a nail-biter, said Thomsen, who said he first became interested in the Rainiers about 10 years ago but could not make the commitment because of his job.
He said he was approached in September about his interest in entering a group that would purchase the Rainiers.
I waited for a group to be formed but no group was formed, and I waited, and no group was formed, he said, So I formed a group.
Thomsen did not reveal the purchase price, saying the group paid a similar price to what other Pacific Coast League franchises were sold for. The Portland Beavers were sold in 2010 for a reported $15 million to $17 million, while the Tucson franchise sold for $13.5 million in 2007.
Thomsen who is part owner of the Walla Walla Sweets of the West Coast League, a collegiate wooden bat league said having the extensively remodeled stadium was a key for his group.
It would have been an awful lot more work and much more difficult, he said.
The Rainiers begin the 2011 season on Thursday in Sacramento. The team's home opener is April 15.