William Blair & Company, L.L.C

William Blair & Company, L.L.C. is a Chicago-based, employee-owned investment bank and asset management firm with a long-standing focus on growth-equity advisory and middle-market investment banking across technology, healthcare, and consumer sectors. The firm entered the SPAC market in 2020, participating in one blank-check IPO during a period of heightened SPAC activity across Wall Street. William Blair carried no left-lead bookrunner mandates on that transaction and currently holds no active SPAC mandates, with its sole deal now closed. The firm is better known for its traditional M&A and equity underwriting franchises than for dedicated SPAC issuance. Subscribers can access William Blair's full SPAC deal history, co-underwriter relationships, and sector breakdown at SpacDesk — sign up for complete data today.

Underwriter data extracted from S-1 and S-1/A prospectus cover sheets filed with the SEC. Role classification (left lead, co-manager) based on syndicate position order. Trust size reflects declared trust at IPO.