Katherine Mesner-Hage

Sanford Heisler Sharp - New York
1350 Avenue of the Americas, 31st Floor
New York, NY 10019
(646) 402-5659

Katie Mesner-Hage is a Senior Litigation Counsel in the New York office of Sanford Heisler Sharp, LLP, a national law firm with offices in the District of Columbia, New York, California, Tennessee, and Maryland. She received her J.D. from Yale Law School and her B.A. magna cum laude from Macalester College.

Katie works on gender discrimination cases, qui tam/whistleblower actions, and the firm’s opioid litigation on behalf of dozens of counties and cities across the nation.

Prior to joining Sanford Heisler Sharp, Katie worked at a plaintiff’s firm in Connecticut, where she was instrumental in conceptualizing and litigating a groundbreaking lawsuit against the firearms industry for the devastating mass shooting at Sandy Hook Elementary School. Katie has also tried several complex medical malpractice cases, all of which resulted in multi-million-dollar verdicts for her clients. She was inducted into the Connecticut Personal Injury Hall of Fame in 2015 and named a Distinguished Leader in the Law in 2017 by the Connecticut Law Tribune.

Katie received her law degree from Yale Law School, where she was a supervisor in the Criminal Defense Clinic and a director of the Capital Assistance Project. She spent her summers defending indigent clients facing the death penalty in Louisiana and Texas.

Katie’s job titles prior to law school include diner waitress, kitchen worker, magazine subscription processor, and night-shift customer service associate at FedEx Kinkos. She believes there is – or should be – dignity in all labor.


  • J.D., Yale Law School, 2013
  • B.A., Macalester College, 2008, magna cum laude

Bar Admissions

  • New York, 2014
  • Connecticut, 2015

Court Admissions

  • U.S. District Court for the District of Connecticut
  • U.S. District Court for the District of Nevada