First Financial Northwest, Inc. Common Stock, also called First Financial Northwest, is a bank holding company, which engages in attracting deposits from the general public and provides lending services. Read More Through its subsidiary, First Savings Bank Northwest, it offers commercial banking services, dynamic savings, stored savings, loaned savings, commercial savings, checking accounts, and money market accounts. The company was founded on June 1, 2007 and is headquartered in Renton, WA.