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

Publication

November 2022 Election Update

Maine State House Most of us who are obsessed with electoral politics expected a tight Gubernatorial race and, if not changes in control of the House or Senate, much closer margins between the majority...

News

Attorney Shana Solomon Recognized by Massachusetts Lawyers Weekly "Top Women of Law" 2022

Preti Flaherty is pleased to announce that attorney Shana Solomon has been recognized by Massachusetts Lawyers Weekly as part of the publication’s “Top Women of Law” list for 2022. Shana is a trial lawyer...

Publication

Another Reminder to Update Policies and Procedures to Reflect Latest COVID-19 Guidance

We  last updated you in early August  regarding the latest COVID-19 quarantine and isolation guidance from the Centers for Disease Control and Prevention (“CDC”).  Cold and flu season is now upon us, and experts are...

Publication

Portland Referenda and Legislative Leadership Update

In addition to all the state and national legislative races that were (mostly) decided by Wednesday morning, there were also 13 referendum questions on the Portland municipal ballot and one in Bar Harbor of...

News

Preti Flaherty Continues Year of Remarkable Growth with Addition of Five New Attorneys

Preti Flaherty is pleased to announce the arrival of five new Associates to the firm: Scott A. DeLong, Christopher S. Knight, Kijana Plenderleith, Harper A. Weissburg, and Joshua D. Williams. In our Portland, Maine, office...

Publication

New EEOC Poster Requirement and Guidance on Notice-Posting in Hybrid Workplaces

The U.S. Equal Opportunity Commission (“EEOC”) recently updated the “EEO is the Law” poster and replaced it with a new one: “ Know Your Rights: Workplace Discrimination is Illegal .” The new poster was...

Press Coverage

Courts Could Throw State Marijuana Markets into Disarray

Over the past two decades, 37 states have legalized the production and/or sale of marijuana in some form. However, due to a lack of federal action, interstate commerce is still considered illegal and barred...

Press Coverage

Preti Flaherty Supports Nationally Recognized Investigative Reporting

Preti Flaherty has been recognized for supporting an award-winning investigative Journalism in Maine.  The non-profit  Maine Monitor  published a nationally recognized series titled “Eavesdropping in Maine Jails” revealing widespread recording of  phone calls between jail...

News

Attorney Colin Barrett Recognized with 2022 KINDness Matters Award

Preti Flaherty attorney Colin Barrett has been recognized by child advocacy organization Kids in Need of Defense (KIND) with the 2022 KINDness Matters Award as part of the organization's Pro Bono Month campaign. KIND...

News

U.S. News – Best Lawyers Ranks Preti Flaherty Among 2023 Best Law Firms

Preti Flaherty has been named among the 2023 Best Law Firms by the U.S. News – Best Lawyers rankings. To be eligible for ranking, a law firm must have at least one attorney named...