Roger Engemann had been serving as the firms chief investment officer as well as CEO since founding the firmin 1969. Engemann will remain CEO of the firm, but wanted to hire a chief investment officer to prepare for a transition when he ultimately retires, which is a few years away, a spokeswoman said.
Lash will report to Engemann and will work with him to oversee the firms equity team, which consists of 14 members managing $9.9 billion in mutual funds and managed accounts, according to the company.
Lash joins Engemann from Chicago-based
Before joining William Blair, Lash was a partner at Lincoln Capital Asset Management, where she helped manage $17 billion in institutional large-cap growth equities.









