Klinedinst PC Names Heather L. Rosing CEO, Announces New Leadership Promotions

Klinedinst PC announces the largest leadership change in the firm’s 37-year historyHeather L. Rosing takes over as CEO and President from firm founder John D. Klinedinst, who will serve as Chair Emeritus. Shareholders Arthur S. Moreau, III and Susan S. Nahama have also been elevated to Chief Financial Officer and Chief Operating Officer, respectively.

SAN DIEGO, CALIFORNIA – Klinedinst PC is pleased to announce that Heather L. Rosing has been named Chief Executive Officer and President. Ms. Rosing is the firm’s second-ever CEO, and the first female CEO.  She takes over from founder John D. Klinedinst, who led the West Coast law firm for nearly four decades.

In addition to naming Ms. Rosing as CEO and President, the firm announced Arthur S. Moreau, III as the firm’s Chief Financial Officer, and Susan S. Nahama as Chief Operational Officer. Ms. Nahama will also continue in her current role as Managing Shareholder of the San Diego office.

“From May 1, 1983 when we opened our doors for the very first time, our core mission with our team has been focused on building dynamic leaders from within,” said Mr. Klinedinst. “Heather, Art, Susan, and the rest of our board are incredible leaders who have truly grown within. Even during these uncertain times, our leadership team will do amazing things in the years ahead.”

Heather L. Rosing, Esq.
Heather L. Rosing

Ms. Rosing is a proven leader who brings 25 years of leadership in the legal industry to the role. The recipient of numerous accolades, Ms. Rosing was among a small group of lawyers recently named “Lawyer of the Decade” by the Daily Journal.

Within the firm, she has held the role of Chief Financial Officer for the past 15 years. Ms. Rosing, a certified specialist in legal malpractice law, is the long-standing Chairperson of the firm’s Professional Liability and Ethics Practice Group. Known for her skill and advocacy, Ms. Rosing represents lawyers and other professionals across the State in litigation, arbitration, and other disputes.  She also advises law firms on ethics and risk management, and serves as an expert witness on issues pertaining to attorney conduct. 

Ms. Rosing has proven leadership skills through her work in the legal community, including her service as president of the San Diego County Bar Association, vice-president of the State Bar of California, the inaugural president of California Lawyers Association, and president of two different bar foundations. As CEO, Ms. Rosing will provide strategic leadership in establishing and implementing organizational vision and strategy, including in the critical area of diversity, equity, and inclusion.

John D. Klinedinst, Esq.
John D. Klinedinst

Mr. Klinedinst will continue to serve in the newly-formed role of Chair Emeritus. He focuses his practice on litigation, including professional liability, business litigation, and intellectual property disputes. San Diego Business Journal recognized Mr. Klinedinst as Most Admired CEO in 2011, 2017, and 2019. He has also been recognized by many other organizations including Martindale-Hubbell, Super Lawyers®Pasadena Magazine, and others.

“John has successfully led the firm for 37 years, and we are thankful for all the opportunities he has created,” said Ms. Rosing.  “His focus on cultivating top-caliber attorneys who excel in client service has been a winning formula for many years. Klinedinst is well-positioned to meet the diverse legal needs of our clients now and in the future, thanks to John’s vision.”

Arthur S. Moreau, Esq.
Arthur S. Moreau, III

Klinedinst CFO Art Moreau has been an integral part of the firm’s success since joining in 1995. He is a former naval aviator, an advocate for public service, and an experienced litigator who just celebrated 25 years with the firm. In his practice, Mr. Moreau uses his business acumen to counsel and defend businesses in areas of real estate, land use, and construction. As CFO, his experience and business acumen will contribute to the firm’s continued success.

Susan S. Nahama

Susan Nahama takes over the role of Chief Operating Officer. Ms. Nahama has been a Shareholder since 2000, and Managing Shareholder of Klinedinst San Diego since 2018. As COO, she will be responsible for day-to-day management, including human resources, operations, financial performance, and team-building across all five offices. Ms. Nahama works in tandem with all of the firm’s offices and departments to build innovative infrastructure, efficient operations, and an exceptional workplace culture. She has extensive experience in a broad range of civil litigation, with a focus on all aspects of professional liability.

These leadership changes become effective February 1, 2021.

The firm congratulates Ms. Rosing, Mr. Moreau, and Ms. Nahama on their promotions, and thanks Mr. Klinedinst for his many contributions and for his continued service. To learn more about each attorney, please visit:

About Klinedinst

Klinedinst is the go-to firm for clients looking for litigation, trial experience, transactional representation, and legal counsel.  The firm’s offices in Los AngelesSacramentoSan DiegoIrvine, and Seattle service the West Coast. What sets Klinedinst apart is the relationships our attorneys foster with each and every client. Klinedinst lawyers are indispensable strategic partners to business leaders, helping to achieve objectives and create proactive solutions to resolve the many legal challenges that businesses are confronted with every day.  Whether vigorously advocating for clients in court, or guiding business transactions and negotiations, Klinedinst is the trusted legal advisor to have by your side.