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Meet Our Team

About Contracting and Procurement Services

Darin Matthews, Director


Darin Mathews has been with PSU since January 2013 and oversees the acquisition of goods, services and construction contracts. He brings over 20 years of public and private sector experience in procurement, contracting, and supply management, and works with all PSU schools and departments to ensure their contracting needs are met. Darin also serves as adjunct faculty for the School of Business Administration, Supply and Logistics Management Program. He has published several books on procurement and is a featured columnist for Government Procurement magazine. Darin holds a BS in Business/Political Science and a Master’s degree in Acquisition Management.

Contracts and Procurement


Karen Thomson, Assistant Director


Karen Thomson manages the procurement and contracting activities for goods and services for PSU. Her role includes the supervision of the central procurement office staff, ensuring compliance with all state and federal contracting regulations, and the implementation of best procurement practices in higher education. Prior to her current position, Karen served as Assistant General Counsel for Research at PSU and also as a Contracts Officer in Research and Strategic Partnerships. Her background includes the management of procurement activities and global contracts for Mentor Graphics Corporation. Karen holds a BS with Honors in Political Science from PSU and a Juris Doctorate from Lewis and Clark Law School. She is a member of the Oregon State Bar and the National Institute of Governmental Purchasing.


Martha Kierstead, Contracts Officer


Martha Kierstead holds the position of Contracts Officer with PSU. Prior to joining the CAPS team Martha served as a Contracts Officer in the Office of Research and Strategic Partnerships at PSU for over 14 years. She is currently on the team which is coordinating the operating agreements, along with the planning and acquisition for furniture, fixtures and equipment, for the Collaborative Life Sciences Building with OHSU. Martha is a member of the National Institute of Governmental Purchasing.


Ahrea Summers, Procurement Coordinator


Ahrea Summers holds the position of Procurement Coordinator for CAPS where she monitors such incoming activities such as contracts and purchases. She provides a high level of customer service to all University schools and departments, as well as the University's contractors and vendors. Ahrea has been with PSU for over 6 years and prior to her current role she was a Revenue Agent for the Business Affairs Office. She is also instrumental in p-card administration for CAPS and enjoys purchasing outreach and marketing events. Ahrea attended the University of Oregon where she studied Sociology and Accounting.


Paul L. Thomas, Contracts Officer


Paul Thomas holds the position of Contracts Officer for PSU where he handles all types of agreements. He has played an instrumental role in the Collaborative Life Sciences Building (CLSB), one of the largest projects in region. In addition to negotiating an operating agreement with Oregon Health and Science University (OHSU) for procurement practices on CLSB, he has served in a lead procurement role for the furniture, fixtures and equipment acquired for the new building. His background in public procurement, higher education, and customer service together with his prior experience in the bio-sciences tools and reagents industry provide for a solid foundation and commitment to collaboration and exceptional customer service. Paul is a member of the National Institute of Governmental Purchasing.


Stacey Balenger, Contracts Officer


Stacey Balenger holds the position of Contracts Officer and has been with PSU since 2009. Prior to this she worked as an Operations Analyst in facilities management for Portland Public Schools. Her current duties for Contracting and Procurement Services include the negotiation and award of custodial, travel, and international agreements. Stacey has a strong background in promoting contract opportunities for Minority, Women and Emerging Small Businesses (MWESB) and also the procurement of sustainable products and equipment. She is a member of the National Institute of Governmental Purchasing and is active with the Oregon Association of Minority Entrepreneurs. Stacey will graduate from PSU in 2013 with a degree in Social Science.


William Terry, Contracts Officer


Bill Terry holds the position of Contracts Officer for PSU and handles all types of agreements including equipment leases, consulting contracts, and intergovernmental agreements. Whether working with an international supplier or a local government, Bill finds a way to negotiate a favorable contract for PSU. He has an extensive background in purchasing, contracting and supply management in the manufacturing sector. Bill is a member of the National Institute of Governmental Purchasing as well as the Institute for Supply Management.


Construction Contracting

Cate Antisdel, Construction Contracts Supervisor


Cate Antisdel manages the procurement of construction related services for PSU. Campus projects of all sizes are contracted by Cate and her team, where they follow competitive bidding practices that provide contract opportunities to minority, women and emerging small businesses (MWESB). Additionally, she ensures that all insurance, bonding, and certified payroll requirements are met. Cate has been with PSU since 2008 supporting the administrative and contracting needs of Facilities and Planning. Prior to joining higher education, she worked in the web site technology industry.


Hanna Emerson, Contracts Specialist


Hanna Emerson is a Contracts Specialist for PSU, specializing in construction related contracts. Her tasks include the preparation of contracts for projects including painting, flooring, electrical, and abatement. Hanna often works with contracts covered by Oregon prevailing wage rate laws as established by the Bureau of Labor and Industries (BOLI). She ensures proper notification to BOLI and monitors the payment of prevailing wages by contractors and subcontractors. Hanna has been with CAPS since 2011 and is also a PSU student. She is currently in her pre-med studies and hopes to become an orthopedic surgeon in the future.


Bryanne Grafton, Contracts Associate


Bryanne Grafton is a Contracts Associate for the Construction Contracting Section of CAPS. She performs a variety of key duties within the procurement and contracting process, including contractor notifications on Invitations to Bid, Requests for Proposal, and Notice of Award. She is particularly passionate about working with minority, women, and emerging small businesses (MWESB). She actively promotes PSU contracting opportunities to MWESBs, participates in business outreach events, and continually tracks utilization data for MWESB contracts and subcontracts. Bryanne began here employment at PSU in 2011 as a student and later graduated from PSU with a BA degree in English.