Allison Warden Sizemore

Partner

Pittsburgh

"Allison is excellent at making complicated topics digestible, exceeds deadlines and has flawless output."

Chambers USA, Employee Benefits & Executive Compensation client

Allison is the managing partner of Reed Smith’s Pittsburgh office and chair of the firm’s U.S. Employee Benefits and Executive Compensation Group.

She advises clients on matters involving employee benefits and executive compensation. Among her areas of focus are the Department of Labor’s fiduciary rule, legal compliance for qualified retirement plans, complex controlled group and similar determinations, documentation and disclosure for qualified and nonqualified plans, executive compensation (including Code Sections 409A, 280G, and 457), counseling regarding day-to-day benefits administration and compliance, health and welfare plan matters, and withdrawal liability and other multiemployer plan issues.

Experience

Representative matters

Assisted Kennametal in connection with a $605 million acquisition of the Tungsten Materials Business of Allegheny Technologies, Inc.
Counsel MSA Safety regarding all aspects of qualified and nonqualified plan compliance.
Represented SPINS LLC, a leading wellness-focused data, analytics and technology provider in the U.S., in its transaction involving a strategic investment from Warburg Pincus.

Recognitions

  • Ranked in Chambers USA for Pennsylvania Employee Benefits & Executive Compensation, 2025
  • Named to Pittsburgh Magazine/PUMP’s 40 Under 40 class, 2024
  • Honored as one of the Lawyers on the Fast Track by The Legal Intelligencer, 2018

Credentials

Education

  • Duquesne University School of Law, 2009, J.D., summa cum laude; 2009 Pittsburgh Tax Club Award; CALI Award for Excellence in Taxation of Corporations & Partnerships, Senior Staff Member and Assistant Comment Editor, Duquesne Law Review; Member of National Appellate Tax Moot Court Team, 2008-2009
  • St. Bonaventure University, 2004, B.A., Political Science, summa cum laude; Outstanding Political Science Graduate, 2004

Professional admissions & qualifications

  • Pennsylvania

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