Global asset manager Russell Investments, which formerly made its home in Tacoma, today announced that Michelle Seitz has been named the company’s new CEO.

Seitz will become chairman of the board effective January 1, 2018 and will be based in the firm’s headquarters in Seattle. She succeeds Len Brennan, who will serve as chairman of Russell Investments through the end of 2017, after which time he will become a strategic advisor to the firm.

“For more than three decades, Russell Investments has been at the forefront of asset management capabilities that are critical for success in today’s investing environment—from cutting-edge asset allocation and unparalleled money manager insights, to some of the earliest forays into factor exposures and a competitively recognized implementation capability,” said Todd R. Crockett, managing director, TA Associates, which, along with Reverence Capital Partners, acquired Russell Investments in 2016. “We are excited to welcome Michelle as Russell Investments’ new CEO, and believe that her forward-looking leadership will help propel the firm into a new phase of evolution and growth that will benefit clients and associates alike.”

Seitz joins Russell Investments after 16 years leading William Blair Investment Management, which has more than 1,400 employees and offices in 10 cities across four continents. Her previous experience also includes senior portfolio management roles with WBIM, Concord Investment Company, and Nationsbank.