Our People

About Us

Executive Leadership

John Largay


With nearly 30 years of contracting experience, John's dedication and passion to client service and quality construction sets the standard for all Wespac staff members. Throughout his career, John has focused his efforts on proactive construction strategies and sound management techniques. He began work in the field of construction after graduating from Arizona State University with a Bachelor of Science Degree in Business Administration. John’s personal project experience ranges from $10,000 tenant improvements to the $200 million Phoenix Plaza. He has created a comprehensive foundation for contracting leadership.

John actively oversees all operations for Wespac Construction, participating directly in conceptual estimating, pre-construction services and quality control. His accessibility to clients and active involvement in Wespac projects ensures clients that their work is being closely monitored from the highest level of the firm.

Garrett Nybo


Graduating from Montana State University with a Bachelor of Science in Mechanical Engineering, his background includes positions as a design engineer, carpenter, then quickly moving into the management of construction projects in a variety of market sectors. Garrett joined Wespac in 2003 and has a proven reputation of being hands-on, client-driven and committed to going above and beyond. His strong interpersonal and organizational skills yield effective communication and thorough documentation on every project.

Glenn Leier

Vice President/Principal

Glenn Leier began his construction career over 25 years ago after graduating with a Bachelor of Science Degree in Construction Management from Colorado State University. Since joining Wespac in 1993, Glenn has successfully led over $650 million worth of work. He excels in communication and coordination with clients, subcontractors and on-site manpower.  His technical skills, as well as his organizational and planning skills, have made a monumental impact in laying the groundwork for Wespac’s approach to delivering projects. As Vice President of the Building Division, Glenn oversees the company operations and development of emerging markets.

Wayne Bogan

Vice President/Principal

Wayne Bogan’s construction career in Phoenix spans over 30 years. His comprehensive experience ranges from small remodel and tenant improvement projects to large commercial and concrete construction. He possesses excellent scheduling and procurement abilities which allow him to resolve issues associated with complex construction projects. Wayne is an active member of American Society for Healthcare Engineering and the Alliance for Construction Excellence.

Tyler Mark

Principal/Division Manager

With nearly 18 years of experience in the commercial construction industry, Tyler excels in estimating, negotiating subcontracts, establishing schedules and coordinating projects.He has extensive knowledge in design development and schematic design; along with submittal tracking, review, procurement and project buy-outs. As a Project/Division Manager, Tyler oversees the master project schedule; as well as weekly meetings and correspondence with owners, architects and subcontractors.

Don Mann

Chief Financial Officer

As CFO, Don Mann manages Wespac’s financial and information technology operations, including strategic planning, accounting and cash management, tax reviews, reporting and risk management. Coming on board in 2010, he brings almost 20 years of experience having worked on the operations side for both public and private companies within the construction and development industry.  Earning a Bachelor of Science in Accounting from Southeastern Louisiana University, Don is a Certified Public Accountant and an active member in American Institute of Certified Public Accountants, Arizona Society of Certified Public Accountant and Construction Financial Management Association.

Jay Coffey

General Superintendent

Jay Coffey has over 30 years of experience as a project superintendent and is qualified in every aspect of construction management. Joining Wespac in 1993, his extensive experience ranges from service requests to new construction. As the head Wespac’s field operations, Jay manages all operations, personnel and equipment, overseeing safety and construction processes, project schedules and operational budgets.


John Newman

Estimating Manager

With 30 years of construction industry experience, John's diverse background includes multi-story office buildings, medical office, financial, hospitality, warehouse, educational, restaurants and retail facilities. John excels at handling multiple-phased projects; keeping them on schedule and within budget, often resulting in owner savings. As Estimating Manager, John is responsible for conceptual estimating, project estimating, value engineering, system analysis and management of the preconstruction activity.


Ken Watson

Service Manager

With more than  30 years of experience in the commercial construction industry, Ken is a skilled tradesman, whose experience spans from specializing in commercial/residential doors, hardware & frames/drywall framing & finishes to plumbing, HVAC systems and construction management. Ken takes pride in his work; always completing jobs to the highest quality and standards. He is conscientious to the customer, as well as to Wespac; creating a win/win situation in even the most difficult challenges.  As Service Manager, Ken is responsible for managing all service and warranty requests, as well as providing highly-valued problem-solving skills and unparalleled customer service and support.