Photo of Kelsey K. McGonigle

Kelsey K. McGonigle


“I enjoy working as part of a diverse legal team to analyze complex legal issues and reach the best outcome for the client.” 


  • Missouri
  • Illinois


J.D., William & Mary Law School, summa cum laude, 2013, Order of the Coif, William and Mary Law Review, articles editor

B.A., Communication, The University of Tulsa, magna cum laude, 2009


Kelsey McGonigle’s practice encompasses all aspects of mergers and acquisitions, drawing on her diverse experience in transactions ranging from asset purchases to equity transactions and debt financing. She frequently drafts transaction documents and performs due diligence on behalf of buyers and sellers.

In addition to her M&A practice, Kelsey regularly advises closely held businesses on business succession planning, working with families to ensure a smooth transition of ownership to the next generation. She also drafts commercial contracts and advises on other general business matters including corporate governance matters and entity formation and dissolution. Kelsey assists in non-profit formations and mergers as well. 

Professional Affiliations

  • Association for Corporate Growth, Board of Directors
  • Alliance of Merger & Acquisition Advisors
  • American Bar Association, Young Lawyers Division
  • Bar Association of Metropolitan St. Louis

Community/Civic Activities

  • Girls on the Run St. Louis

Honors & Awards

Honors & Awards

  • Missouri & Kansas Super Lawyers, Rising Star, Mergers & Acquisitions, 2017-21
  • John E. Donaldson Most Outstanding Tax Student Award
  • Academic Excellence Award in Family Wealth Transactions
  • Legal Skills Scholar
  • The Best Lawyers in America, "Ones to Watch," 2022-2024


Representative Matters

Mergers and Acquisitions:

  • Represented a financial buyer in an asset acquisition of a window and door manufacturer.
  • Represented the selling shareholder in the sale of a waterproofing business to employees.
  • Prepared a Hart-Scott-Rodino (HSR) Act antitrust filing as part of the sale of a manufacturing company to a private equity investor, managing the collection and analysis of the client’s communications, notes and other documentation to comply with disclosure requirements. 
  • Worked as part of the team that implemented a rapid growth strategy for a leading market flowshare measurement company through the procurement of private equity investment and mezzanine debt, followed by multiple strategic acquisitions.
  • Represented a buyer in an asset acquisition of a lamp and lighted magnifier manufacturing and distributing company.
  • Acted as local counsel to a Swedish company as part of an acquisition of a U.S. division of another international company. 

Business succession planning:

  • Developed business succession plan for a family-owned cabinet manufacturing company to transition the business to the next generation.
  • Assisted in drafting a shareholders’ agreement for a closely held business, including specific provisions to achieve succession planning goals.

Commercial Contracts:

  • Served as outside general counsel for a utility company with operations in five states and conducted commercial contract review for the company and its subsidiaries.
  • Prepare form contracts and conduct commercial contract review for manufacturer of flavor extracts.

News & Insights

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