Colleen McCullough


McCullough, Colleen

Colleen McCullough is an associate who represents a wide range of clients in complex litigation matters. She was a summer associate at WilmerHale in 2015.

Prior to joining the firm as an associate, Ms. McCullough served as a law clerk to the Honorable Thomas N. O'Neill of the United States District Court for the Eastern District of Pennsylvania. Previously, Ms. McCullough served as primary draftsperson for the University of Pennsylvania's Criminal Law Research Group, where she assisted the international effort to redraft Somalia's criminal code.

While attending law school, Ms. McCullough worked in the Penn Law Supreme Court Clinic, served as a judicial intern to the Honorable Judge Robert N. McDonald of the Maryland Court of Appeals, and worked as an advocate and board member with the Penn Law Custody and Support Assistance Clinic.


Skip Navigation Links.


JD, cum laude, University of Pennsylvania Law School, 2016, Articles Editor, University of Pennsylvania Law Review

BA, Philosophy, cum laude, Princeton University, 2012

Bar Admissions



The Hon. Thomas N. O'Neill, US District Court for the Eastern District of Pennsylvania, 2016 - 2017

Skip Navigation Links.