Anthony Nasharr knew little to nothing about Big Law life when his six-lawyer boutique was absorbed into Polsinelli in 2006. But Polsinelli’s Chicago managing partner for the past 11 years proved a quick study, having grown the office into nearly 100 lawyers a little more than a decade later.

Nasharr will step down Thursday from that leadership position and be replaced by Mary Clare Bonaccorsi, the current leader of Polsinelli’s health care litigation practice.