First Midwest Bancorp completed its acquisition of Northern Oak Wealth Management, a Milwaukee-based registered investment adviser with approximately $800 million of assets under management. First Midwest announced its intent to acquire Northern Oak on November 8, 2018.

“We are excited to welcome Northern Oak clients and colleagues to First Midwest,” said Bob Diedrich, executive vice president and director of Wealth Management at First Midwest. “We look forward to continuing to meet the financial needs of Northern Oak’s high net worth clients by providing them with a highly personalized client experience, as well as a broad range of private banking and wealth management solutions.”

First Midwest is one of the Midwest’s largest independent wealth management providers, with approximately $11 billion in assets under management and clients across 30 states. The Northern Oak team joins more than 140 colleagues in First Midwest’s Wealth Management business.

Northern Oak Chairman Mark Zellmer and President David Becker, who have a combined 46 years of tenure at the firm, are continuing to serve in leadership roles. Northern Oak is operating as a subsidiary of First Midwest.