People

Meet the Leadership Team

Marathon’s Leadership Team is comprised of solid, proven energy industry performers who are technically astute, driven to attain high standards, and collaborative problem solvers. They also possess the mental agility necessary to help improve our clients’ performance through the use of all available facilities and innovation.

Bruce O’Brien

President and CEO

Bruce O’Brien has more than 45 years of experience in commercial nuclear power production, naval submarine operations, and shipyard work.
Read Full Bio

Gary Cavanaugh

Senior Vice President

Gary Cavanaugh has more than 41 years of experience in utility and commercial nuclear power production.
Read Full Bio

Michael Peckham

Senior Vice President

Mike Peckham has more than 47 years of naval and commercial nuclear power experience. He has been a senior nuclear and project management executive with extensive experience in North American power generation.
Read Full Bio

Philip Chase

Vice President, Safety Culture

Phil Chase has more than 36 years of experience in nuclear power operations, including both naval and commercial operations.
Read Full Bio

Dennis Hansen

Vice President West Coast Operations

Dennis Hansen has more than 38 years of nuclear experience providing leadership in operations, outage and work control management, maintenance, engineering, and performance improvement.
Read Full Bio

Fritz Schlabach

Chief Financial Officer

Fritz Schlabach is a senior operations and finance executive with more than 25 years of expertise in improving processes, reducing costs, managing cash, and positively influencing stakeholders in the pursuit of strategic solutions and increasing shareholder value.
Read Full Bio

Meet the Client Services Team

Like our Leadership Team, Marathon’s Client Service Team are highly knowledgeable energy industry veterans. We seek out and retain professionals with demonstrated track records of innovative, successful problem solving (typically, our associates and employees are people we know and have worked with before). Throughout client engagements, we carefully monitor the Associate’s or employee’s performance and client satisfaction and actively engage to ensure both.
Associates

Ahmad Shahrpass

Chief Engineer, Director of Engineering

Ahmad Shahrpass has more than 37 years of experience in the nuclear power industry, including plant design, analyses, engineering, construction, operation and maintenance support, and project management.
Read Full Bio

Mark Floyd

Vice President, Regulatory Recover

Mark Floyd has more than 34 years of nuclear experience ranging from hands-on technical work through senior manager assignments.
Read Full Bio

Frederick Forck

Director, Performance Improvement and Analysis

Frederick Forck has more than 35 years of commercial nuclear experience, including the areas of performance improvement, cause analysis, quality assurance, and training.
Read Full Bio

Carl Kuester

Director, Projects and Work Management

Carl Kuester has more than 37 years of experience in nuclear power operations, including both naval and commercial operations.
Read Full Bio

Gaston (Mike) Riva

Director, Plant Support

Gaston Riva has 29 years of experience in nuclear power plant engineering, work management, maintenance, and regulatory recovery.
Read Full Bio

Steven Wackenstedt

Director, Operations Support

Steve Wackenstedt has more than 42 years of experience in nuclear power operations, including both naval and commercial operations.
Read Full Bio
Team Support Staff

Janie Bailey

Assistant Corporate Controller

Janie Bailey has been with Marathon since 2006. She has more than 37 years of accounting experience.
Read Full Bio

Brenda Taghizadeh

Payroll and Benefits Administrator

Brenda Taghizadeh joined Marathon in January 2018. She has more than 13 years of experience in payroll and human resources.
Read Full Bio

Michelle Rosenau

Payroll and Benefits Administrator

Michelle Rosenau joined Marathon in the spring of 2016. She has more than 12 years of payroll and accounting experience in a high-volume corporate environment.
Read Full Bio