Louis D. DeMato headshot
900 Elm Street
10th Floor
Manchester, NH 03101
Tel: 603 628 1366

Louis D. DeMato

Of Counsel, Corporate Department

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Lou is a business and transactional tax attorney representing clients in all aspects of their businesses and related transactions.  He has extensive experience advising on corporate, partnership, and tax issues arising in mergers and acquisitions, corporate divestitures, capital restructurings, ESOPs, financing, private equity, and structuring and negotiating commercial transactions.

Lou initially joined the firm in 2007 and most recently worked in the Mergers & Acquisitions tax practice in KPMG LLP’s Boston office before returning to McLane Middleton. Lou received his LL.M in Taxation from the Boston University School of Law, his J.D. from Suffolk University Law School, and his B.A, in Economics from Syracuse University.

Areas of Focus:

  • Mergers & Acquisitions
  • Taxation
  • Corporate Business Law
  • ESOPs
  • Private Equity


  • Massachusetts
  • New Hampshire


  • Board of Trustees, New Hampshire Audubon (2015 – 2019)
  • Vice Chair, Tax Section of the New Hampshire Bar (2009 – 2010)
  • Graduate of Leadership Greater Manchester, Greater Manchester Chamber of Commerce
  • Member of the City of Manchester’s Planning Board (2008 – 2011)

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Our lawyers are sought after thought leaders across their industries, and recipients of leadership awards throughout the region.

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Integrity and trust

At McLane Middleton we establish and maintain long-standing relationships with our clients to help us better achieve their unique goals over time. This approach to building trust requires that our esteemed lawyers and professionals use their broad, in-depth knowledge and work together with integrity to ascertain sound resolutions to legal matters for their clients.

Strength in numbers

McLane Middleton is made up of more than 105 attorneys who represent a broad range of clients throughout the region, delivering customized solutions. As a firm we are recognized as having the highest legal ability rating. The firm is rated Preeminent by Martindale Hubbell and is recognized as one of the nation's leading law firms in Chambers USA. Our attorneys are distinguished leaders in their respective practice areas.

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Commitment and collaboration

McLane Middleton's versatile group of attorneys and paralegals become trusted authorities on each case through collaboration. We work with our clients to learn their individual needs first and foremost and, together, we develop comprehensive solutions to their specific legal matters. This approach helps us exceed our clients' expectations efficiently and effectively, client by client, case by case.

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A history of excellence

McLane Middleton was established in 1919 in New Hampshire, and has five offices across two states. However, deep historical roots don't allow you to become innate. Our firm is organized, technological, and knowledgeable. Our history means we are recognized. But our reputation is built on the highest quality of service and experience in very specific areas of law.

The Firm

Intelligence paired with action

Our team continuously seeks opportunities to enhance their professional development and put key learnings to action. The pursuit of further insight guides us to volunteer service opportunities, speaking engagements, and teaching roles. Our lawyers are sought after thought leaders across their industries, and recipients of leadership awards throughout the region.