About Michael Lesser

Michael A. Lesser joined Thornton Law Firm as an associate in 1995 after previously clerking at the firm. He heads the firm's whistleblower litigation section, representing individuals who report violations of securities laws under the SEC Whistleblowing statute and individuals who report fraud on the government through the Federal and state False Claims Act. In 2020 his client, an FX trader who worked for Bank of New York Mellon, received what was then the largest individual SEC whistleblower award in history, nearly $50 million for providing information that led to a successful enforcement action returning significant funds to harmed investors. He was named an Up-and-Coming Lawyer by Massachusetts Lawyers' Weekly in 2002 and a Massachusetts Super Lawyer in 2021, 2022, and 2023.

Proven verdicts and settlements at Thornton Law Firm

These results are credited to Thornton Law Firm. A result appears under an attorney's own name only when a published source names them as counsel on the case.

$42.6 millionVerdictTop 20 in Massachusetts · #8

A Massachusetts jury found Johnson & Johnson liable for Paul Lovell's mesothelioma, awarding $42.6 million in what is believed to be the largest mesothelioma verdict in the state's history.

Middlesex County Superior Court, Massachusetts (No. 21-2086) · 2025Product LiabilityRead the full story →
$7.55 millionVerdict

A Massachusetts jury awarded $7.55 million to Gerald Sylvestre, a former New Hampshire power plant worker who developed mesothelioma after repeated exposure to asbestos insulation installed by a Canton distributor, in what was then reported as the largest asbestos verdict in New England history.

Middlesex County Superior Court, Massachusetts (No. 15-7031) · 2017Product LiabilityRead the full story →
$6.8 millionVerdict

A Middlesex County jury awarded $6.8 million to Amy Ross and her two daughters after finding New England Insulation Company liable for the mesothelioma death of her husband Timothy, who had been exposed to asbestos dust doing part-time insulator work around Boston as a teenager and young adult.

Middlesex County Superior Court, Massachusetts (No. 13-5580) · 2017Product LiabilityRead the full story →

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.

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Bar admissions & credentials

State Bar of Massachusetts

Other attorneys at Thornton Law Firm

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Proven verdicts and settlements from other Boston firms

Lubin & Meyer
Lubin & Meyer
$40 Million Verdict for Family of Boy Left with Cerebral Palsy After Five-Hour Delivery Delay
Swartz & Swartz
Swartz & Swartz
$18.4 million · Federal Jury Awards $18.4 Million After Lahey Clinic Doctors Cancel HIV Test, Allowing AIDS to Develop
Sugarman & Sugarman
Sugarman & Sugarman
$30.55 Million Verdict After Traveling Nurse Failed to Monitor Fetal Heart Rate at MGH
Sweeney Merrigan Personal Injury Lawyers
Sweeney Merrigan Personal Injury Lawyers
$450 million sought · $450 Million Wrongful Death Suit: Eversource Ignored Gas Leak for Three Years Before Fatal Maynard Explosion
Breakstone, White & Gluck
Breakstone, White & Gluck
$56 million · Middlesex Jury Awards $56 Million to Retiree Disabled When Amazon Delivery Van Crossed the Center Line

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.