• 7700 Bonhomme Avenue
  • 7th Floor
  • St. Louis, Missouri 63105
  • 314.727.0101
    Pay Bill

Mark J. Temkin

Mark J. Temkin,

For over 46 years, Mark J. Temkin has dedicated his practice to the area of Business Law, with an emphasis on Mergers & Acquisitions, Business Structures and Governance, Real Estate Transactions, Tax and Estate Planning.

Major Accomplishments

Creator and participating drafter of the Missouri Qualified Spousal Trust RSMo 456.950 enacted into law in May 2011.

Co;Drafter and Co-Creator of the Missouri Cooperative Associations Act RSMo Section 351.1000- 351.1228.

Drafter of the Prohibitions on Physician Referrals to Physical Therapists RSMo Section 334.252 and 253.

Rendering complex tax counseling and general representation in connection with the solicitation and negotiation of agreements with the Rams professional football team to effectuate their move to St. Louis.

Negotiating and closing the sale, merger and purchases of numerous businesses with values between $3,500,000 and $200,000,000.


Super Lawyer 2006, 2008, 2009, 2022, 2023

Named one of the Top Five Business Lawyers in St. Louis 2019 by St. Louis Small Business Monthly

Named by St. Louis Small Business Monthly as Top 5 Best M&A Providers 2023

Named by St. Louis Small Business Monthly as a 2018, 2019 and 2020 Top M&A Provider

Selected by Best Lawyers of America(c) 2017-2024 in the areas of Corporate Law, Mergers and Acquisitions, Tax Law and Trusts and Estates

Member of Lawyers of Distinction

Martindale and Hubbell AV Preeminent Attorney 2013-2024

Martindale-Hubbell Top Rated Lawyers in Mergers & Acquisitions

Named as one of the “Top Attorneys in Missouri and Kansas” as published by Kansas City Magazine.

Recognized by the American Registry as one of America's Most Honored Lawyers - Top 1% 2016-2023.

Five Star Best In Client Satisfaction Wealth Managers for 2008 and 2009, an honor bestowed among just 4% of the wealth managers in the St. Louis area


Mark is licensed to practice in the State of Missouri and is a member of the Bar Association of Metropolitan St. Louis and the American Bar Association. Mark is a founding member of the Cardozo Society in St. Louis, and is also the founder and director of a scholarship fund which grants multiple scholarships per year to students of Parkway West High School. He is also a Member of the Executive Committee of the Board of Directors of AMICSTL, the Advanced Manufacturing Innovation Center of St. Louis, a 501(c)(3) hoping to transform St. Louis into the nation’s leader in advanced manufacturing concepts and developments. He also sits on several advisory boards for clients with net values upward of $150 Million. He also has a strong entrepreneurial background having owned and controlled over 500,000 square feet of office warehouse in addition to owning and controlling condominiums, strip center and triple net projects like Advanced Auto and Lion’s Choice.

He has written and lectured on real estate transactions and the taxation thereof, as well as wills and trusts, including chapters on "Trusts" and "Wills" for Legal Checklists, published by Callaghan and Company from 1978 through 1985. He also co-authored :Changing the Playing Field” published by ProView eBooks in 2012.


Honors from the University of Wisconsin in 1973 with a Bachelor of Science in History.

Juris Doctorate and L.L.M. in Taxation from Washington University in St. Louis.

Areas of Practice

  • Business Cooperatives and Associations
  • Business Counseling, Formation, Mergers, Sales & Acquisitions
  • Charitable Organizations
  • Franchise, Distribution & Licensing Operations
  • Health Care Law
  • Real Estate Law and Litigation
  • Tax Planning Law
  • Trusts, Probate, & Estates


We are committed to the success of our clients.