Mark J. Jahnke

Mark J. Jahnke

Cincinnati, OH recognized lawyers icon Recognized in Best Lawyers since 2001
Katz Teller

22 Best Lawyers awards

Katz Teller logo

Awarded Practice Areas

Corporate Law Mergers and Acquisitions Law

Biography

Ask Mark Jahnke how he's doing, and he will tell you he's living the dream. And while every attorney knows on some days that might ring sarcastic, Mark regularly means it.

For him, the dream is the opportunity to work with clients to help them achieve their dreams. Because clients recognize that his level of care and concern is something unique, Mark is often asked to serve on client boards, advisory groups or in other capacities that allow him to work hand-in-hand with management to achieve business goals or navigate challenges and complexities.

While day-to-day client counseling frequently occupies a significant portion of Mark's workday, his reputation has been built on and staked to the special skill he brings to advising clients on mergers, acquisitions, divestitures and other major corporate transactions. Several times Mark has represented one party in a deal only to be hired later by the other party in connection with a separate transaction.

A long-time client describes Mark as “the kind of lawyer that every CEO dreams of hiring,” and the lawyer he would want on his side of the table in any negotiation. As that client recognized, Mark does not pretend to be an expert in every area, but involves the right people as needed to help clients avoid unnecessary legal adventures. This echoes Mark’s recognition in Chambers USA as an “astute business lawyer and negotiator who is very easy to deal with,” and who will "fight for the things that are important with great practical judgment and a sense of humor.”

As the President and CEO of Katz Teller, Mark is not only the face of the firm, but a force that drives us forward. Mark’s ability to bring out the best in those around him, along with his leadership and judgment, keep us focused on achieving the level of service our clients expect and deserve.

REPRESENTATIVE TRANSACTIONS

In addition to handling a variety of matters relating to business organizations, including formation, organizational structure, owner/shareholder relationships, business succession and related issues, and representation of C-level private and public company executives, Mark has represented a number of our clients, including those identified below, in significant acquisition, recapitalization and disposition transactions:

Katz Teller

22 Best Lawyers awards

Katz Teller logo

Overview

  • English

  • The Ohio State University, B.A., graduated 1976
  • The Ohio State University, M.A. (Joint Conferral), graduated 1976
  • Northwestern University, J.D., graduated 1979
  • The Ohio State University, BA, graduated 1976
  • The Ohio State University, MA, graduated 1976

  • Ohio, Ohio State Bar Association

  • Cincinnati Children's Hospital Medical Center - Chair, Nominating and Governance Committee; Member, Executive Committee
  • Cincinnati Children's Hospital Medical Center - Vice Chair, Board of Trustees
  • Cincinnati USA Regional Chamber - Former Board and Executive Committee Member
  • Leadership Cincinnati - Class XXVII
  • The Children's Hospital - Trustee
  • United Way of Greater Cincinnati - Board of Directors
  • Volunteer Lawyers for the Poor Foundation - Board of Trustees
  • English
  • Ohio, Ohio State Bar Association
  • Cincinnati Children's Hospital Medical Center - Chair, Nominating and Governance Committee; Member, Executive Committee
  • Cincinnati Children's Hospital Medical Center - Vice Chair, Board of Trustees
  • Cincinnati USA Regional Chamber - Former Board and Executive Committee Member
  • Leadership Cincinnati - Class XXVII
  • The Children's Hospital - Trustee
  • United Way of Greater Cincinnati - Board of Directors
  • Volunteer Lawyers for the Poor Foundation - Board of Trustees
  • The Ohio State University, B.A., graduated 1976
  • The Ohio State University, M.A. (Joint Conferral), graduated 1976
  • Northwestern University, J.D., graduated 1979
  • The Ohio State University, BA, graduated 1976
  • The Ohio State University, MA, graduated 1976

Client Testimonials

Awards & Focus

Lawyer of the Year Badge - 2025 - Mergers and Acquisitions Law Lawyer of the Year Badge - 2021 - Corporate Law Lawyer of the Year Badge - 2017 - Corporate Law Lawyer of the Year Badge - 2015 - Mergers and Acquisitions Law Lawyer of the Year Badge - 2014 - Corporate Law Lawyer of the Year Badge - 2012 - Corporate Law Lawyer of the Year Badge - 2012 - Mergers and Acquisitions Law
Named "Lawyer of the Year" by Best Lawyers® for:
  • Mergers and Acquisitions Law, Cincinnati (2025)
  • Corporate Law, Cincinnati (2021)
  • Corporate Law, Cincinnati (2017)
  • Mergers and Acquisitions Law, Cincinnati (2015)
  • Corporate Law, Cincinnati (2014)
  • Corporate Law, Cincinnati (2012)
  • Mergers and Acquisitions Law, Cincinnati (2012)
Recognized in The Best Lawyers in America® 2026 for work in:
  • Corporate Law
  • Mergers and Acquisitions Law
Special Focus:
  • Closely-Held Businesses
  • Family Businesses
  • General Corporate
  • Health Care
  • Leveraged Buyouts
  • Mergers & Acquisitions
  • Private Equity
Awards:
  • Woodward/White’s Best Lawyers in America® “Lawyer of the Year”, Cincinnati, Corporate Law, 2012, 2014 & 2017
  • Chambers USA – America’s Leading Lawyers for Business for Corporate/Mergers and Acquisitions (Tier 1 - Top 5 Lawyers in Ohio)
  • Law & Politics Media, Inc. as an Ohio Super Lawyer® and as one of the “Top 50 Lawyers in Cincinnati” and one of the “Top 100 Lawyers in Ohio”
  • Neil H. McElroy Leadership Award from the United Way of Greater Cincinnati in 2008 for leadership in resource development
  • 2012 Core Values Award for Responsibility from The First Tee Chapter of Cincinnati
  • 2007 Deal Maker of the Year (Service Provider Award) by the Association for Corporate Growth
  • Woodward/White’s Best Lawyers in America® "Lawyer of the Year", Cincinnati, Mergers and Acquisitions Law, 2012 & 2015
  • Best Lawyers in America® for Corporate Law and Mergers & Acquisitions every year since 1999

Additional Information

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Case History

Transactions
  • The Minster Machine Company
Represented the fourth-generation owners of this Ohio manufacturing business in a sale to Nidec Corporation
  • The Estate of Austin E. Knowlton
Represented this Estate in the sale of a 30% interest in the Cincinnati Bengals. Negotiated transaction with third parties and handled sale to Cincinnati Bengals through exercise of right of first refusal.
  • Ampac Packaging, LLC
Has represented Ampac since 2000 through two recapitalizations and in several domestic and international acquisitions.
  • Jeff Wyler Automotive Family
Has represented this large, regional auto dealer in several acquisition transactions
  • The Midland Company
Represented the controlling family shareholders and principal executives in connection with the sale to Munich Re Group.
  • Fund Evaluation Group
Represented FEG in the sale to Old National Bank and repurchase by FEG management.
  • Rough Brothers/RBI Solar
Represented the shareholders in connection with a sale to Gibraltar Industries.
  • CE Power Solutions
Represented the company in connection wtih a recapitalization transaction with Mason Wells
  • Washing Systems
Represented the shareholders and management team in a recapitalization transaction with Gryphon Investors

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