Century City’s OpenGate Capital announced Monday that it has completed the sale of Kotkamills Oy, a Finnish specialty paper and wood products company, to Finnish private equity firm MB Funds. Terms of the deal were not disclosed.

Platinum Equity in Beverly Hills announced Friday that it has agreed to acquire PrimeSource Building Products Inc., a Dallas building materials distributor, from Japanese conglomerate Itochu Corp. Terms of the deal were not disclosed.