MINNEAPOLIS, MO M. A. Mortenson Company announces that Lois Martin joins the company as its Chief Financial Officer. Martin assumes the role following the retirement of longtime CFO Sandy Sponem.

Martin brings a wealth of experience as an executive leader across multiple industries, business models and capital structures. She most recently served as Executive Vice President and CFO at Ceridian Corporation, a provider of payroll, workforce management, benefits, human resources, compliance, and tax services. Prior to her role at Ceridian, Martin held CFO roles at Capella Education Company and Deluxe Corporation.

Martin is affiliated with the National Association of Corporate Directors, Women Corporate Directors, the American Institute of Certified Public Accountants, the Minnesota Society of Certified Public Accountants, and Financial Executives International.

"We are pleased to welcome Lois to Mortenson. She brings a proven track record in both strategic and operational-oriented roles, encompassing M&A, capitalization, audit, treasury, controls, and financial planning and analysis," said David Mortenson, Chairman at M. A. Mortenson Company. "Lois is joining our company at a very exciting time and she will be instrumental in the continued growth and expansion of our business."

Martin, a graduate of Augustana University, has served on the boards of various for-profit and not-for-profit organizations over her career. She is currently serving on the board of directors of Donnelley Financial Services, Stratacor/Delta Dental of Minnesota, and Augustana University.

Sandy Sponem has retired following more than ten years as Mortenson's Chief Financial Officer. As Senior Vice President and CFO, she was a part of the company's executive leadership team and led the growth and modernization of Mortenson's finance and accounting functions. Sponem also provided oversight for Mortenson's information technology group, and served on the company's investment, risk management, compliance and development committees. She is widely recognized for her commitment to the career development of Mortenson team members.

"Throughout her tenure, Sandy has been instrumental in building our organizational capability to support our growing and ever more diverse business," said Dan Johnson, President and Chief Executive Officer at Mortenson. "Sandy is a tremendous leader and has exemplified Mortenson's values - working diligently to deliver an exceptional customer experience and strengthen our team. We will greatly miss her drive and dedication to continuous improvement."