About Mary Kate

Stellar track record of helping clients successfully close complex deals

Armed with experience as an in-house counsel, Mary Kate Hogan provides clients with a wide range of corporate counsel, including mergers and acquisitions (M&A), commercial contracts matters and outside corporate counsel services. Her clients include:

  • Privately held businesses
  • Family businesses
  • Private equity funds
  • Publicly held companies

Prior to joining Quarles, Mary Kate served as in-house general counsel for a national print, marketing and logistics provider and a credit card processing and software as a service company. She uses her deep in-house counsel experience to find practical legal solutions that align with her clients’ business concerns. Clients describe her as indefatigable, level-headed and consistent. Mary Kate seamlessly traverses business concerns and legal issues to help clients find not just a quick solution but the right solution — especially when closing a deal.

Experience in Action

  • Drafts and negotiates transaction documents, including stock and asset purchase agreements, merger agreements, contribution agreements, escrow agreements and other ancillary documents.
  • Manages all aspects of a transaction, including determining transaction structure, performing due diligence and managing due diligence teams, communicating with clients, coordinating with specialists (internal and external, including local counsel in domestic and foreign jurisdictions), obtaining representation and warranty insurance, managing closing mechanics, and preparing internal teams for integration and other post-closing matters.
  • Advises companies on restructurings and corporate maintenance.

Successes

  • As in-house general counsel, led organization through merger process with an international payments and software company to form a global payments and software provider. Post-merger, she advised a global restructure and prepared for potential IPO.
  • Created internal M&A process for serial acquirer, leading team of internal specialists through approximately 10 acquisitions a year from the diligence process through closing and post-closing integration.
  • Prepared, coordinated and implemented plan to convert corporations to limited liability companies across numerous subsidiaries, including pre-closing and post-closing integration matters.
  • Represented client in asset acquisition of specific software applications to be integrated into larger platform.
  • Advised private equity client in equity acquisition of and add-on to a portfolio in the manufacturing space.
  • Negotiated equity and debt commitment letters for a private equity client in connection with a large cross-border minority investment.
  • Advised a small family business owner in connection with sale of a 50% ownership of such business.
  • Advised a private equity client with respect to medical spa acquisitions in various states.
  • Advised private equity client in connection with equity and asset roll-up transactions of multiple print companies.
  • Advised mining and manufacturing client with respect to international commercial and acquisition transactions.

Professional Recognitions

  • Best Lawyers in America® (2026: Closely Held Companies and Family Businesses Law)
  • Missouri In-House Counsel Awards “Rising Star” (2020)

Professional & Civic Activities

  • United Way of Greater St. Louis, Women’s Leadership Society, committee member
  • United Way of Greater St. Louis, Women’s Leadership Society mentorship program, mentor
  • Books for Newborns, director
  • Carney’s Kids, director

News & Insights

Education

Bar Admissions

Court Admissions

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