Biography

Nathan is a Director in the firm’s Concord, New Hampshire office. His work focuses on complex commercial litigation and government investigations in the construction, health care, insurance, and financial services industries. He frequently represents clients in state and federal courts, as well as before numerous state agencies and the Legislature.

Nathan frequently authors publications and provides presentations on a variety of legal topics in the health care and construction industry, as well as developments in data security and breach notification laws, and the changing legal landscape for cannabis-related businesses. Nathan is also one of the editors – including the Honorable Tina Nadeau, Chief Justice of New Hampshire Superior Court – of the treatise A Practical Guide to Evidence in New Hampshire 2nd Edition (2021).

In recognition of his notable work for clients, Nathan has been named multiple times to the “Under 40 Hot List” by Benchmark Litigation, which recognizes the "nation’s most notable up-and-coming litigation attorneys." This list is compiled through a process of both peer review and case examination.

Nathan is an active member of the community. Nathan was named to the 2021 New Hampshire Union Leader 40 Under Forty list recognizing “outstanding Granite Staters making a difference in their communities and professions.” In December 2020, he was appointed by the New Hampshire Supreme Court to serve a three-year term on the Access to Justice Commission. Nathan currently serves on the New Hampshire Campaign for Legal Services Large Firm Committee. He has served on multiple committees of the New Hampshire Bar Association.  In November 2019, Nathan was elected to a four-year term as an at-large councilor on the Concord City Council.  Previously, he served on the Concord School Board (2015-2018). Nathan also coaches youth baseball and basketball.

During law school, Nathan interned for the United States Department of Justice and The Honorable Mary Ellen Coster Williams at the United States Court of Federal Claims. He was also a member of the law review and national moot court team. After graduation, Nathan practiced law in Washington, D.C., with the international law firm Reed Smith LLP, before returning home to New Hampshire.

Professional Activities

  • New Hampshire Supreme Court, Access to Justice Commission, Member
  • New Hampshire Bar Association, Legislation  Committee, Member

Honors & Recognition

  • Benchmark Litigation - Under 40 Hot List
  • New Hampshire Union Leader - 40 Under Forty

Civic and Charitable Activities

  • Concord City Council, At-Large Councilor
  • Concord School Board, past member
  • Georgetown University Alumni Admissions Program
  • New Hampshire Campaign for Legal Services, Large Firm Committee, Member

Publications

  • A Practical Guide to Evidence in New Hampshire 2nd Edition (2021), Edited by Nathan Fennessy, Hon. Tina Nadeau, Kenneth E. Rubinstein, and Karen A. Schlitzer.
  • "Health Reform Legislation Includes Significant Amendments to the False Claims Act," co-author, Federal Forecaster, Vol. VI, No. 2 (Spring 2010)
  • "The President Signs a Significant Amendment to the Federal False Claims Act," co-author, Financial Fraud Law Report (September 2009)
  • "Sweeping Changes to the Federal False Claims Act Are on the Horizon," co-author, Financial Fraud Law Report (May 2009)
  • "Changes to the Federal False Claims Act Are on the Horizon," co-author, Federal Forecaster, Vol. V, No. 2 (Spring 2009)
  • Comment, "Bringing Bloggers Into the Journalistic Privilege Fold," 55 Catholic Law Review 1059 (Summer 2006)

Firm Highlights

News

Attorney Jeffrey Thaler Named to 2023 Lawdragon Green 500: Leaders in Energy Law

For the second time, Preti Flaherty attorney Jeffrey Thaler has been recognized by the esteemed legal publication Lawdragon as an elite practitioner in the field of energy law. Jeff is the only Maine-base lawyer...

News

Benchmark Litigation Names Preti Flaherty 2023 “Maine Firm of the Year”

Benchmark Litigation has named Preti Flaherty as 2023 Litigation Firm of the Year in the State of Maine. The Benchmark Awards honor distinguished litigators and law firms in all 50 states and 10 practice...

Publication

Enforcers Make It Easy to Report Cartels

This article was originally published in the American Bar Association  Antitrust Newsletter  on February 8, 2023.  Did you know that global competition enforcers have easy-to-find websites to encourage reporting of anticompetitive conduct? Not only...

News

Maine Lawyers and Judges Once Again Show Overwhelming Support of Campaign for Justice

2022 proved to be another challenging year for Mainers. Skyrocketing inflation, an uncertain economic future, an ongoing housing crisis and more factors continue to push more at-risk individuals into a tight spot. Maine’s civil...

Publication

FY2024 H-1B Registration Fact Sheet for Employers

Registration Process To file H-1B petitions subject to the FY2024 cap for an employee, you must first electronically register and pay a $10 fee for each electronic registration. The electronic registration includes basic information about...

Press Coverage

What’s Inside Maine Freight Trains? Public Can Only Hazard a Guess

Due to an exemption from the state's Freedom of Access Act, Maine residents are prevented from reviewing information regarding the transportation through their communities via freight trains of potentially hazardous materials. Rail industry officials...

Press Coverage

Authorities Refuse to Release Records for Maine School Shooter Hoax Calls

On November 15, 2022, multiple law enforcement agencies in Maine received false calls alerting police to active shooter situations at several high schools throughout the state. In the wake of this widespread hoax, the Kennebec...

Event

Jeff Talbert to Moderate Panel on PFAS Regulatory Action at ABA Toxic Torts & Environmental Law Conference

Jeff Talbert, Chair of Preti Flaherty's Environmental Law Group, will moderate "Regulatory Action: History & Horizon" at the ABA Toxic Torts & Environmental Law Conference. This panel will discuss the 2016 EPA health advisory, the...

Publication

Maine Workers’ Compensation New Year Update 2023

The new year brings proposed legislation, an update to the Medical Fee Schedule, and two recent decisions from the Appellate Division. Proposed Legislation Workers’ compensation bill LD 53 (HP 28) would amend 39-A M.R.S.A...

Event

Bodie Colwell will be a Featured Panelist at ABI Annual Spring Meeting

Bodie Colwell will be a featured panelist on "Danger Ahead! Avoiding and Addressing Ethical Landmines in Attorney Engagement and Compensation" at the American Bankruptcy Institute's Annual Spring Meeting. The panel focuses on disputes regarding engagement...