Michael Mannion


Tel: 314-726-2090
Fax: 314-726-1491

Michael P. Mannion is the founding member of The Mannion Law Firm, LLC. Mr. Mannion concentrates in assisting clients with their real estate and corporate needs. His practice focuses on complex real estate matters, corporate formation and acquisitions, construction and commercial business matters, as well as serving as general corporate counsel to a broad range of individual and corporate clients.

With an emphasis on providing legal services and traditional counseling to his clients, Mr. Mannion has broad experience in real estate, construction, corporate law, corporate formation, shareholder agreements, contract law, contract drafting and general business and commercial matters.

Mr. Mannion has extensive experience handling real estate matters including acquisitions and dispositions, real estate development and redevelopment, the use of economic development incentives, lease negotiation and drafting, real estate finance, joint ventures, property management, planning and zoning matters.

Mr. Mannion has frequently represented small businesses and closely held companies in ongoing corporate and commercial business matters in a broad variety of industries and in the purchase and sale of the assets or stock of other businesses. He has represented business owners in disputes between shareholders, partners, limited liability company members and family members. He has been involved in disputes regarding the enforcement of non-compete agreements and handled the drafting and negotiation of employment agreements.Mr. Mannion has served as counsel to developers and borrowers in numerous debt and equity financings and bond transactions.

Mr. Mannion is a native of St. Louis and has been active in a wide variety of charitable organizations. Mr. Mannion and his wife, Ellen, have three daughters, and are residents of University City, Missouri.


  • Obtained license as a Certified Public Accountant (CPA) in Missouri, 1981
  • Became a Member of the Missouri Society of Certified Public Accountants, 1983
  • Obtained license as an Attorney in Missouri, 1986
  • Obtained license as a Real Estate Broker in Missouri, 1987
  • Member of the Missouri Bar Association
  • Member of the Bar Association of Metropolitan St. Louis
  • Recognized as a “Forty Under Forty” Recipient, a prestigious award of the St. Louis Business Journal honoring individuals with significant professional achievements under the age of 40


  • General Counsel & Vice President of Development of national real estate development company – MLP Investments, L.L.C. and Pioneer Construction Company
  • General Counsel of Developer of regional shopping centers and retail centers – Mpirical Development, L.L.C.
  • Partner in the Real Estate Department – Blackwell Sanders Peper Martin (n/k/a Husch Blackwell, LLP)
  • President & General Counsel – River City Sports Ventures, L.L.C
  • President & Legal Counsel – Celtic Development Company, L.L.C.
  • Attorney & CPA with law firms and “Big Four” international accounting firms


  • Washington University School of Law, St. Louis, MO, LL.M. (Masters of Law) in Taxation, 1991
  • St. Louis University School of Law, St. Louis, MO, J.D. (Law), 1986
  • University of Virginia, Charlottesville, VA, B.S.B.A. in Accounting, 1981
  • Chaminade College Prep – National Merit Scholar Finalist, 1977