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RexMcKeon

Associate

"Serving as a client's trusted advisor is an honor and a privilege. I pride myself on providing solution-focused counseling and a meaningful client experience."

Overview

Biography

Rex is a transactional attorney who focuses on mergers and acquisitions involving independent pharmacies and other health care businesses. He represents buyers and sellers in asset and equity transactions involving community retail pharmacies, specialty pharmacies, and compounding pharmacies and advises clients on acquisitions, dispositions, ownership structures, governance matters, and related commercial arrangements. Rex guides clients through every stage of the transaction process, including structuring, due diligence, negotiation, closing, and post-closing integration.

In addition to his pharmacy and health care transactional practice, Rex counsels for-profit and not-for-profit organizations on entity formation, ownership and governance matters, and commercial contracting. He regularly advises clients on customer and vendor agreements, terms and conditions of purchase and sale, corporate governance issues, tax-exempt organization formation, and federal and state tax-exempt status. His experience also includes advising religious organizations on formations, affiliations, disaffiliations, and other organizational transactions.

Rex further represents emerging companies and investors in private placements and venture capital transactions, including National Venture Capital Association (NVCA)-style priced financing rounds.

Before practicing law, Rex spent nearly a decade with a large Boston-based health care technology company, where he worked closely with health care providers to improve operational efficiency, optimize revenue cycle performance, and implement value-based care initiatives. That experience provides him with a practical understanding of the operational, regulatory, and reimbursement challenges facing pharmacies and other health care organizations, informing his approach to complex health care transactions.

Bar Associations

  • Bar Association of Erie County
  • Boston Bar Association
  • New York State Bar Association

Selected Memberships & Affiliations

  • St. Thomas More Guild of Western New York, Member
Experience

Representative Experience

Mergers & Acquisitions
  • Represented the seller of a New York City–based specialty pharmacy in the sale of its assets to a strategic buyer in a transaction valued at $10 million.
  • Represented a group of strategic investors in the purchase of a retail pharmacy and associated real estate in a transaction valued at $4.4 million.
  • Represented the sellers of a closely held clinical research company to a private-equity platform in a transaction valued at $115 million.
  • Represented the surviving entity in a merger of two health and human services providers involving assets in excess of $100 million, which included obtaining regulatory approvals from the NYS Office of Mental Health, NYS Office of Addiction Services and Supports, and the NYS Attorney General.
  • Represented the seller of a US freight-factoring portfolio to a competitor in a strategic asset sale valued at $50 million.
  • Represented the owners of a construction cost-estimating company in an equity transaction valued at $57 million.
  • Represented the second-generation operator of a specialty manufacturer in a successful exit from the business and divestiture of the associated real property to a private equity platform in a transaction valued at approximately $10 million.
Emerging Companies & Venture Capital (ECVC)
  • Represented a Canadian transportation and logistics company regarding its US expansion and operations.
  • Represented a cannabis testing laboratory start-up in connection with its entity formation, corporate structuring, and $2 million series seed raise.
  • Represented an AI software testing start-up in connection with its formation, corporate structuring, and initial approximately $3 million pre-seed financing round with convertible notes.
  • Represented a Software-as-a-Service (Saas) provider in the facilities management sector in connection with multiple series seed and series A financing rounds totaling approximately $10 million.
  • Represented an emerging company developing an AI-native customer success platform in its $4 million Series Seed round.
  • Represented a start-up professional sports team in negotiating a league expansion agreement and completing the pre-seed financing round.
Not-for-Profit & Religious Corporations
  • Serves as outside general counsel for the United Way of Buffalo & Erie County, advising executive leadership and the board of directors on matters related to corporate governance, commercial contracting, and providing day-to-day legal support.
  • Represented not-for-profit and religious corporations before the New York State Attorney General and New York State Supreme Court on matters relating to corporate and real property transactions.
  • Represented eight local congregations separating from the Upper New York Conference of the United Methodist Church.

Prior Experience

  • Barclay Damon LLP, Law Clerk
  • athenahealth, Inc., Manager, Customer Success Management
  • University of Maine, College of Education and Human Development, Teaching Assistant
  • University of Maine, College of Liberal Arts and Sciences, Research Fellow

Selected Community Activities

  • Graycliff Conservancy, Board Member, Vice President (2026)
  • Hauptman-Woodward Medical Research Institute, Young Professional Member, Class of 2023
  • BISON Children's Scholarship Fund, Governance Committee Member
  • The Mayhew Program, Annual Volunteer
  • Northport Volunteer Fire Department, Former Volunteer Firefighter

Selected Honors

  • Best Lawyers: Ones to Watch® in America: Corporate Law, 2025–2027; Health Care Law, 2026 and 2027
  • Selected to Super Lawyers Upstate New York Rising Stars: Business/Corporate, 2025
  • New York State Bar Association, Empire State Counsel®, 2024
  • American Bar Association Client Counseling Competition, Regional Semifinalist, 2021

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