Jenner & Block

Hannah K. Costigan Cowles is an associate in the Corporate Practice and focuses primarily on mergers and acquisitions, securities transactions and compliance, and general corporate matters.

Ms. Costigan Cowles received her J.D. from the University of Illinois College of Law in 2013, graduating summa cum laude and Order of the Coif.  During law school, she served as articles editor for the University of Illinois Law Review and received the Rickert Award for Education based on her academic record. Ms. Costigan Cowles received her B.A. in psychology and Italian from Washington University in St. Louis in 2009.

Prior to attending law school, Ms. Costigan Cowles worked for the International Institute of St. Louis through the Americorps VISTA program.