Atty. Michael O'Sullivan III
Michael J. O’Sullivan, III represents clients in the areas of commercial litigation, corporate and business transactions, and real estate law.
Profile Summary
About Michael O'Sullivan III at a glance
Michael O'Sullivan III is a employment, business, and litigation attorney based in New Haven, Connecticut, practicing at Neubert, Pepe & Monteith PC. They have 4+ years of legal experience, licensed to practice since 2022. Admitted to practice in Connecticut, Connecticut Bar Association (2022), Connecticut, Connecticut Bar Association (2022), Connecticut, Connecticut Bar Association (2022), and Connecticut, Connecticut Bar Association (2022). Educated at Quinnipiac University (J.D., 2022) and Quinnipiac University (J.D., 2022). Recognitions include Best Lawyers in America — Business Organizations (including LLCs and Partnerships) (2026), Best Lawyers in America — Commercial Litigation (2026), and Best Lawyers in America — Litigation - Labor and Employment (2026). Serands clients in New Haven, CT and the surrounding metropolitan area.
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About
- Michael J. O’Sullivan, III represents clients in the areas of commercial litigation, corporate and business transactions, and real estate law
- He was inspired to pursue law from a young age based on his relationship with his grandfather, who served as an Assistant Attorney General for the State of Connecticut for more than 35 years and was a proud alumnus of Le Moyne College
- Michael attended Le Moyne College in Syracuse, New York, majoring in political science and theatre
- During college, Michael interned with the Connecticut State Senate Office and worked in a business law firm in East Haven, Connecticut
- His diverse background in politics, law, and storytelling informed his decision to attend law school
- Michael attended Quinnipiac University School of Law where he obtained his Juris Doctorate, magna cum laude
- There, he was an active member of the mock trial society and society for dispute resolution, competing in several mock trials, arbitrations, and mediations
- He was further recognized for Academic Excellence in Business Transaction Clinic, Distinguished Academic Excellence in Administration Law and excellence in his trial law and advocacy courses
- Since joining Neubert, Pepe & Monteith, P.C., Michael appreciates the firm’s collegial, collaborative, and pragmatic approach to protecting client interests and solving legal issues in a flexible and efficient manner
- Michael’s conscientious and unrelenting determination to serve a client’s interests make him a good fit at a firm that prioritizes the same values
- Outside of work, Michael is an avid Boston sports fan, and enjoys reading, golfing, and spending time with his family
- While in college, Michael’s passion for acting and film earned him a role as a background actor in Martin Scorsese’s The Irishman, which he considers one of the most formative experiences of his life
Practice Areas Explained
Michael O'Sullivan III's Areas of Practice
Each practice area below reflects the types of cases Michael O'Sullivan III handles, with a brief overview of what that area of law covers.
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
Michael O'Sullivan III is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Connecticut →
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Michael O'Sullivan III is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Connecticut →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Michael O'Sullivan III is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Connecticut →
Jurisdictional Context
Why local counsel matters in Connecticut
Practicing law in Connecticut. Legal matters in Connecticut are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New Haven are typically filed in the local municipal court or the appropriate Connecticut state district court, depending on subject matter and amount in controversy. An attorney licensed in Connecticut brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Connecticut courts without local counsel or pro hac vice admission.
Looking for additional Connecticut attorneys? Browse all attorneys in New Haven or all attorneys in Connecticut.
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