Atty. John Ryan McCarthy
John Ryan McCarthy is a lawyer practicing securities offerings, government, emerging companies and 2 other areas of law. John received a B.A. degree from Bowdoin College in 1999, and has been licensed for 21 years.
Emerging Companies & More Attorney · Serving Boston, MA · 21+ Years Experience
Profile Summary
About John Ryan McCarthy at a Glance
John Ryan McCarthy is an Associate based in Boston, Massachusetts, practicing at Latham & Watkins LLP. They have 21+ years of legal experience, licensed to practice since 2005. Their practice focuses on business, m&a, securities, and government. Admitted to practice in Massachusetts (2005). Educated at Boston University School of Law (J.D., 2005) and Bowdoin College (B.A., 1999). Serves clients in Boston, MA and the surrounding metropolitan area.
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About John Ryan McCarthy
- John Ryan McCarthy is a lawyer practicing securities offerings, government, emerging companies and 2 other areas of law
- John received a B.A. degree from Bowdoin College in 1999, and has been licensed for 21 years
- John practices at Latham & Watkins LLP in Boston, MA
Practice Areas Explained
John Ryan McCarthy's Areas of Legal Practice
Each practice area below reflects the types of cases John Ryan McCarthy handles, with a practical overview of what that area of law involves and how it may apply to your situation in Boston.
Business & Corporate Law in Boston
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
John Ryan McCarthy is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Massachusetts →
Mergers & Acquisitions in Boston
John Ryan McCarthy is one of 49,430 m&a attorneys indexed nationally. Browse m&a attorneys in Massachusetts →
Securities Law in Boston
John Ryan McCarthy is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Massachusetts →
Government & Administrative Law in Boston
Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.
John Ryan McCarthy is one of 131,162 government attorneys indexed nationally. Browse government attorneys in Massachusetts →
Jurisdictional Context
Why Local Counsel Matters in Boston
Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Boston are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.
Boston Courts and Legal Process
Choosing a Boston-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.
Frequently Asked
Common Questions About John Ryan McCarthy
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Professional Profile
Why Clients in Boston Choose John Ryan McCarthy
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish John Ryan McCarthy's practice in the field of business, m&a, securities, and government.
Decade-Tested Legal Experience
John Ryan McCarthy brings 21+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Broad Practice Area Coverage
Covering business, m&a, and securities, John Ryan McCarthy can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Boston
A Boston-based practice means John Ryan McCarthy attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues John Ryan McCarthy Handles in Boston
Below is a representative sample of the types of matters John Ryan McCarthy has experience with under Massachusetts law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact John Ryan McCarthy directly to discuss the specifics of your situation.
Search Reference
How People Find John Ryan McCarthy Online
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John Ryan McCarthy's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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