Team

Mark Tapert is the CEO and Owner of Corstone Contractors LLC. He focuses on creating value for Corstone's construction clients, while motivating our team of highly skilled experts.

Mark brings a wealth of knowledge from 30+ years of experience in the construction industry, including years on-site, in management and ultimately in an ownership capacity. His experience and leadership skills are dedicated to overseeing Corstone's business development efforts and growing Corstone as a company that provides exceptional service, high value and consistent performance to repeat customers.

Mark is a member of CEO International and is also involved in a national construction peer group. When he's not leading our team, you can find him traveling with his family, or participating in just about any outdoor activity.

John Parpart became an important part of the Corstone team in 2017. He brings more than 20 years of experience in all aspects of accounting and finance, holding previous positions as CFO, VP Finance and Controller for construction companies and land developers. John holds an MBA in finance and a B.S. in Mechanical Engineering from the University of Washington and is a Certified Management Accountant (CMA). His background in engineering and business has allowed him to collaborate more effectively across the entire organization and lead initiatives in operations and financial services for Corstone.

When he isn't crunching numbers, you'll find him on the water wakeboarding and wakesurfing or camping with his family. He also keeps busy as Treasurer for Boy Scouts, soccer coach, umping little league baseball games and cheering on the Huskies.

Emily Klein has a proven track record of successfully optimizing efficiency, process improvement, and leading high-performance teams. Emily began her career as a project coordinator and later becoming construction administration manager, where she honed her skills in project administration, resources allocation, and risk management. Her exceptional leadership and strategic vision propelled her into senior roles.

At Corstone Contractors, Emily is responsible for the overall management of daily operations, ensuring that projects are executed with the highest standards of quality and safety. Her focus on continuous improvement and innovation had let to the implementation of new technologies and methodologies that have significantly enhanced Corstone's operational capabilities. 

Emily oversees the operations manager and director of field operations, including project managers, field staff, and construction administration.

Stephanie Van Gundy joined Corstone in 2016 in a multifaceted role as Marketing Coordinator & Recruiter. She supports marketing and business development efforts by supporting Corstone’s current clients while building new client relationships. She has a passion for people development, business promotion and marketing. She is also responsible for looking out for great talent to join the Corstone team. Prior to joining Corstone, she worked for several recruiting firms in the Pacific Northwest collaborating with clients to identify and fulfill staffing needs.

Stephanie holds a B.A. in Communication from Washington State University. In her free time, she’s enjoying the outdoors and spending quality time with her family and friends. 

Sean Barquist has been an integral part of the Corstone team since 2004. He is Certified LEED AP and has worked on a range of roles and  projects for Corstone including retail, restaurant, and multifamily. He began his career in construction over 30 years ago out in the field where he developed a great understanding of civil work.

Sean is proud of the relationships he has developed with many of Corstone's repeat customers. He strives to bring quality to all of this projects with an attention to detail. When Sean isn't tending to our field staff, you'll find in the great outdoors camping and hiking or traveling to tropical destinations with his wife.

Since joining Corstone Jason has become a key component to our team. He brings over 20 years of knowledge and has worked in many aspects of construction. He exceeds at developing successful teams, and creating long standing relationships with customers, vendors, and subcontractors.

Outside of the office you can find Jason riding dirt bikes with his kids or spending time on the golf course.