Monarch Retirement Group has joined Commonwealth Financial Network, bringing with it  $250 million in client assets, company official said today.

Commonwealth Financial Network is a privately held, independent broker-dealer with headquarters in Waltham, Mass., and San Diego. It has about 1,400 advisors and is controlled by 12 managing principals. It currently oversees $641 million in client assets.      

San Diego-based Monarch Retirement Group is an investment advisory firm specializing in helping pre-retirement and retired corporate employees with their personal wealth management plans. Formally affiliated with SII Investments, Monarch's founding members include Jim Galante, Michael Lambrix and Jeremy Laub.

“As Monarch continues to focus on next-generation planning, we look forward to providing the platform needed to drive steady growth and the support to build upon and strengthen their client relationships,” John Rooney, managing principal of Commonwealth, said in a statement.