Jack is Co-chair of the Securities Litigation Practice and a seasoned trial lawyer whose clients include public and private corporations, officers, directors, special committees, accountants, mutual funds, portfolio managers, and investment advisors. His practice encompasses all facets of securities and financial fraud litigation, and he has handled complex civil and criminal matters involving insider trading, revenue recognition, high-yield investment schemes, market timing, late trading, options backdating, and securities. In addition, he frequently represents clients in connection with internal investigations and investigative and enforcement proceedings conducted by the SEC, FINRA, and state regulatory agencies. His clients range from Fortune 500 companies to start-ups in the life sciences, retail & consumer goods and technology space. Jack also leverages his extensive background in securities litigation and M&A litigation to counsel companies on risks related to SPAC transactions and litigation avoidance.
In addition to his trial experience, Jack also has represented clients in arbitration and alternative dispute resolution, including proceedings before the American Arbitration Association and FINRA.
- Jury acquittal for a CEO client charged with criminal tax evasion arising from an options backdating investigation.
- Represented Vertex Pharmaceuticals, Inc. in a decision crystalizing the standard required to plead scienter in securities fraud cases in the First Circuit.
- Retained as trial counsel to defend former CFO of a two-and-a-half billion-dollar NYSE-listed company based in China, in a securities class action trial relating to the company's 2011 financial collapse. Secured a favorable trial verdict and resulting settlement that required no monetary payment from the CFO.
- Represented the Orchid Cellmark board in connection with shareholder derivative litigation alleging breach of fiduciary duty in connection with a merger transaction, defeating plaintiffs’ attempt to enjoin the transaction, resulting in the merger closing on schedule.
- Represented former officers and directors of The Learning Co. (TLC) in a shareholder class action alleging violation of Section 11 of the '33 Act brought by former shareholders of Broderbund, Inc., a company previously acquired by TLC, securing a dismissal in the trail court and an affirmance in the Ninth Circuit.
- Defended a public pharmaceutical company and its officers against Section 10(b) and Section 11 claims arising out of a secondary public offering, successfully obtaining a dismissal of all counts.
- Successfully represented a technology company and the company’s officers and directors against allegations of securities fraud.
- Favorable post-trial decision in Delaware Court of Chancery for corporate and individual clients charged with breaches of fiduciary duties.
- Defense jury verdict for corporate officers charged with violation of Section 10(b) in connection with the purchase of convertible-preferred securities.
- Represented iBasis, Inc. and its officers and directors in a shareholder derivative action alleging breach of fiduciary duty and violations of Section 14(a) of the Securities Exchange Act of 1934, arising out of alleged stock options “backdating” and improper accounting attendant thereto, prevailing on a motion to dismiss.
February 18, 2022 | Blog
January 10, 2022 | Blog | By John Sylvia, Patrick E. McDonough
Webinar Recording: When the Dust Settles: A Closer Look at the SPAC Boom and Potential Litigation to Follow
June 7, 2021 | Webinar | By Adam Sisitsky, Nancy Adams, John Sylvia
April 2, 2021 | Blog | By Thomas R. Burton, III, John Sylvia, Sahir Surmeli, Patrick E. McDonough
March 26, 2021 | Blog | By Thomas Burton, John Sylvia, Sahir Surmeli, Patrick E. McDonough
Supreme Court of Delaware Overturns Court of Chancery, Allowing Corporations To Enact Federal Forum Provisions to Keep Securities Act Claims In Federal Court
March 20, 2020 | Blog | By John Sylvia, Patrick E. McDonough, Ellen Shapiro
March 22, 2018 | Alert | By Adam Sisitsky, John Sylvia
October 18, 2013 | Blog | By John Sylvia, Chip Phinney
Chancellor Strine Issues Important Decision Validating Board Adoption of Forum Selection Clause in Bylaws
July 3, 2013 | Alert | By John Sylvia
News & Press
November 21, 2023
November 14, 2023
October 12, 2023
September 11, 2023
November 22, 2022
June 16, 2021
June 10, 2021
August 16, 2020
INSIGHT: Climate Change Based Securities Litigation: A Reminder of Risks to Executives in PSLRA Cases
September 14, 2018
August 28, 2018
May 03, 2018
December 1, 2016
November 30, 2016
November 16, 2016
October 18, 2016
October 7, 2016
Events & Speaking
2022 PLUS D&O Symposium
New York, NY
View the Webinar Recording
John J. Moakley Courthouse, 1 Courthouse Way, Boston, MA
Grant Thornton 757 3rd Avenue and 47th Street New York, NY
Marsh, Mintz Levin, and Grant Thornton
New York, NY
Recognition & Awards
- Massachusetts Super Lawyers: Securities Litigation (2006, 2010 – 2023)
- Best Lawyers in America: Litigation - Securities (2018 – 2024)
- Chambers USA: Massachusetts - Litigation: Securities (2011 – 2023)
- Lawdragon: "500 Leading Litigators in America" (2022-2023)
- Boston Magazine Top Lawyers – Securities Law (2022-2023)
- Fellow, Litigation Counsel of America
- Business Today News: Top 10 Prominent Securities Litigation Lawyers Shaping Massachusetts in 2023