Mark J. Jahnke - Katz Teller

Mark J. Jahnke

Listed in Best Lawyers since 1999
Phone: 513-977-3435

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.


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:

  • Listed as one of the Best Lawyers in America® for Corporate Law and Mergers & Acquisitions every year since 1999
  • Named “Lawyer of the Year” for Cincinnati in Corporate Law for both 2012 & 2014 and Mergers and Acquisitions Law for 2012 & 2015 by Woodward/White’s Best Lawyers in America®
  • Listed in Chambers USA – America’s Leading Lawyers for Business for Corporate/Mergers and Acquisitions (Tier 1 - Top 5 Lawyers in Ohio)
  • Consistently recognized by 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”
  • Received the Neil H. McElroy Award from the United Way of Greater Cincinnati in 2008 for Resource Development Leadership
  • Received the Deal Maker of the Year Award in 2007 from the Association for Corporate Growth

Mark has led our firm’s United Way campaign for several years and has helped keep our firm as the community leader in terms of per capita giving.  He also serves on the Board of Directors of United Way of Greater Cincinnati.

From 2010-2015, Mark was a member of the Board and Executive Committee and General Counsel for the Cincinnati USA Regional Chamber.

Mark was a member of Class XXVII of Leadership Cincinnati.

Mark is Vice-Chair of the Board of Trustees of Cincinnati Children’s Hospital Medical Center (Chair, Nominating and Governance Committee; Member, Executive Committee.)

Mark is a Trustee of The Children's Hospital, the parent entity of Cincinnati Children's Hospital Medical Center.

Mark is a member of the Board of Trustees of the Volunteer Lawyers for the Poor Foundation.


The Ohio State UniversityBA 1976The Ohio State UniversityMA 1976Northwestern UniversityJ.D. 1979
United Way of Greater CincinnatiCincinnati USA Regional ChamberLeadership CincinnatiCincinnati Children's Hospital Medical CenterCincinnati Children's Hospital Medical CenterThe Children's HospitalVolunteer Lawyers for the Poor Foundation

Case History

The Minster Machine Company — Represented the 4th 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

Office Location

First Financial Center, 24th Floor
255 East Fifth Street
Cincinnati, OH 45202-4724
United States

Lawyer of the Year Awards

2017 Lawyer of the Year in Corporate Law of the Cincinnati Metro Area2015 Lawyer of the Year in Mergers and Acquisitions Law of the Cincinnati Metro Area2014 Lawyer of the Year in Corporate Law of the Cincinnati Metro Area2012 Lawyer of the Year in Corporate Law of the Cincinnati Metro Area2012 Lawyer of the Year in Mergers and Acquisitions Law of the Cincinnati Metro Area
Mark J. Jahnke has earned a Lawyer of the Year award for 2017!Mark J. Jahnke has earned a Lawyer of the Year award for 2015!Mark J. Jahnke has earned a Lawyer of the Year award for 2014!Mark J. Jahnke has earned a Lawyer of the Year award for 2012!Mark J. Jahnke has earned a Lawyer of the Year award for 2012!

Practice Areas

Corporate Law (Closely-Held Businesses, Family Businesses, General Corporate, Health Care, Leveraged Buyouts, Mergers & Acquisitions)
Mergers and Acquisitions Law (Health Care, Private Equity)

Other Information

Gender: Male