Phone: (617) 531-3933

Practice Areas

Securities Litigation

Guillaume Buell

Of Counsel

Overview
Education
Admissions

Guillaume Buell focuses on prosecuting complex securities fraud cases on behalf of institutional investors and advises leading pension funds and other institutional investors on issues related to corporate fraud in the U.S. securities markets. He also advises foundations and endowment funds on monitoring the well-being of their investments. Mr. Buell also litigates complex consumer fraud class actions. Mr. Buell is an active member of the National Association of Public Pension Attorneys and the National Association of Shareholder and Consumer Attorneys. In 2019 he was named a "Rising Star" for Securities Litigation by Super Lawyers, a rating service of outstanding lawyers from more than 70 practice areas who have attained a high-degree of peer recognition and professional achievement.

As co-chair of the Firm’s securities litigation practice, Mr. Buell is currently serving as co-Lead Counsel in several federal securities class actions pending across the country, including:

  • In re Adient plc Securities LitigationNo. 18-cv-9116 (S.D.N.Y.)
  • Tung v. Dycom Industries, Inc., et al.No. 18-cv-81448 (S.D. Fl.)

Furthermore, the Firm and Mr. Buell serve as counsel to plaintiffs in the following actions:

  • Plymouth County Retirement System v. Impinj, Inc., et al.No. 650629/2019 (Supreme Court of New York, County of New York)
  • Iron Workers District Council of New England Pension Fund v. Veeco Instruments, et al., Case No. 18CV332644 (California Superior Court, County of Santa Clara) (consolidated into Wolther v. Maheshwari, et al., Case No. 18CV329690 (Lead Case))
  • Wayne County Employees’ Retirement System, et alv. Mavenir, Inc., et al.Case No. 18-cv-1229-CFC (D. Del.)
  • McComas v. BrightView Holdings Inc., et al., No. 2019-07222 (Montgomery County, Pennsylvania Court of Common Pleas)
  • City of Cambridge Retirement System v. National Mentor Holdings, Inc., No. 12019-0225 (Del. Chancery)
  • Brandeis University, B.A., cum laude, with departmental honors
  • Boston College Law School, J.D., Recipient of Graduate Student Association Law School Award

• Commonwealth of Massachusetts
• State of New York
• State of Texas
• Supreme Court of the United States
• U.S. District Court for the District of Massachusetts
• First Circuit Court of Appeals
• U.S. District Court for the Southern District of New York
• U.S. District Court for the Eastern District of New York
• Second Circuit Court of Appeals
• U.S. District Court for the Eastern District of Texas
• U.S. District Court for the Northern District of Texas
• U.S. District Court for the Southern District of Texas
• U.S. District Court for the Western District of Texas
• U.S. District Court for the District of Colorado

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