Birch Hill to boost stake in Tidwater to 22.3 percent

Birch Hill Equity Partners Management Inc has agreed to buy 43.7 million shares of Tidewater Midstream and Infrastructure Ltd for $1.45 a share or $63.37 million. AltaGas Processing Partnership is the seller. Birch Hill will see its stake in Tiewater rise to about 22.3 percent from 9.1 percent.

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