Kathryn L. Alessi

Kathryn L. Alessi is a seasoned litigation attorney known for guiding companies and individuals through complex legal disputes. Her work centers on securities and shareholder litigation, regulatory enforcement matters, and business disputes. She advises clients facing high-risk allegations while focusing on practical solutions that protect reputations and long-term interests.

Kathryn earned her Bachelor of Arts degree from Lafayette College, graduating first in her class as Valedictorian, summa cum laude, with honors. She later completed her Juris Doctor at the University of California, Berkeley School of Law. Her legal education included recognition through the Order of the Coif and multiple academic distinctions.

Kathryn brings more than two decades of experience representing clients in the financial services, healthcare, life sciences, private equity, and technology sectors. She handles securities class actions, shareholder derivative cases, and complex commercial litigation in state and federal courts, often achieving early dismissals that reduce cost and exposure.

Kathryn regularly represents clients in investigations and enforcement proceedings before the SEC, FINRA, state securities regulators, and the U.S. Department of Justice. She also conducts internal investigations involving disclosure issues, accounting matters, and corporate governance concerns, helping organizations respond swiftly and reduce regulatory and litigation risk.

Kathryn has been recognized for excellence and leadership within the legal community. Her honors include being named a “Top Women of Law” honoree by Massachusetts Lawyers Weekly in 2022. She also earned American Jurisprudence Awards and a Moot Court Advocacy Award during law school.

Kathryn is deeply engaged in civic and professional service, including work supporting veterans seeking service-connected disability benefits. She has also contributed to initiatives that raise funding for public education and leadership development, reflecting a commitment to service alongside a demanding legal practice.

Kathryn L. Alessi is trusted by clients for her steady judgment, courtroom experience, and clear communication. She combines strong legal analysis with a practical approach, helping clients resolve disputes, navigate investigations, and move forward with confidence in challenging legal environments.

Law Office Affiliations

• Partner, Sidley Austin LLP
• Member, Massachusetts Bar Association
• Member, Boston Bar Association
• Member, American Bar Association

Licensed State

• Massachusetts

Education

• University of California, Berkeley School of Law
  Juris Doctor (JD)
• Lafayette College
  Bachelor of Arts (BA)

Awards & Badges