Southwest Bancorp of Oklahoma City said it has agreed to acquire a minority stake in a local trust company.

Southwest, the $1.2 billion-asset parent of Stillwater National Bank, did not say how much it would invest in Heritage Trust Co.

Under the agreement, Heritage would begin offering trust and investment management services to Southwest customers, with Southwest to receive 10% of the gross trust fees, said Kerby Crowell, Southwest's chief financial officer.

Heritage, which manages $250 million of assets, would get the remaining 90%, according to Mr. Crowell.

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