Lisak, Jessica Giglia

Jessica Giglia Lisak

Jessica Lisak has a diverse practice with an emphasis on securities litigation and investigations. She has represented public companies in federal class actions as well as financial institutions and their officers and directors in connection with government investigations and securities litigation in state and federal courts.

Ms. Lisak also maintains a robust pro bono practice and manages WilmerHale's biannual legal clinics in partnership with the Massachusetts Lawyers Clearinghouse. She has successfully helped clients seal criminal records, resolve outstanding warrants, obtain public benefits (e.g., housing, veterans and social security disability benefits), appeal the denial of such benefits and apply for asylum.

Past Experience

Prior to joining WilmerHale, Ms. Lisak interned at the Suffolk County District Attorney's Office and the United States Attorney's Office in Boston

Professional Commitments

Ms. Lisak serves as a member of The Lawyers Clearinghouse’s Leadership Committee and is a member of WilmerHale’s Pro Bono and Public Service Committee.


  • Represented large internet-based company in class action lawsuits filed in the Federal District Courts for the Districts of Connecticut and Southern District of California concerning allegations of fraud, unfair and deceptive trade practices, and violations of various state privacy laws.
  • Represented pharmaceutical company and its former officers and directors in a class action in the Federal District Court for the District of Massachusetts concerning alleged violations of federal securities laws.
  • Represented large financial services company in litigation and related investigations brought by the Securities and Exchange Commission, Department of Justice, and other state and federal agencies for claims related to breach of contract and fiduciary duty and federal securities laws.
  • Represented financial services company in investigation brought by the Securities and Exchange Commission and the Department of Justice for claims related to fraud and breach of fiduciary duty.


Ms. Lisak was selected by the Boston Bar Association as a member of the 2017-2018 Public Interest Leadership Program, a 14-month program that addresses specific public service and community challenges.

In 2017, she was named a “New England Super Lawyers Rising Star” for securities litigation.

Insights & News


  • Education

    • JD, Boston University School of Law, 2010

      cum laude Public Interest Law Journal, First-Year Writing Fellows Program, Fellow
    • MA, Social Sciences, University of Chicago, 2005

    • BA, Boston College, 2002

      magna cum laude Phi Beta Kappa, Advanced Study Grant Recipient
  • Admissions

    • Massachusetts