This Month's Guest

Upcoming Guests


Keith Ashby, CPPO 

Since 2003, Keith has served as purchasing manager for Arapahoe County, Colorado. He has also held high-level purchasing positions for the City of Fort Collins and Denver Public Schools. 


He is active in the Rocky Mountain Governmental Purchasing Association (RMGPA) and has served on the Board of Directors for NIGP: The Institute for Public Procurement. Keith is also an instructor for NIGP, sharing his knowledge and experience in public procurement throughout the country.  


Keith earned a degree in Music Education from the University of Colorado, Boulder. He also holds the designation of Certified Public Procurement Officer (CPPO) from the Universal Public Procurement Certification Council.  


Our first podcast of 2021 will include a discussion with Keith on the following topics: 

  • His past music career as drummer for Earth, Wind and Fire 

  • How and why he ended up in public procurement 

  • Current procurement trends he is seeing in the Rocky Mountains and beyond 

  • Skills and attributes he looks for in new buyers 

  • What future challenges may be awaiting the profession 


Past Guests


Jan Siderius 

Jan founded Negometrix in The Netherlands in 2000 with the goal of providing the perfect digital solution for automating the sourcing and contracting process from start to finish. Today, the company's 80 employees are proud to serve 850 clients worldwide and support thousands of purchasing professionals every day.


Jan currently serves as the President of Negometrix USA, the company's US team. Previously, he held senior management positions in the Hospital Supply Industry for Fresenius and Baxter.  He has served as an expert advisor to the European Union on eProcurement and as a board member of the European Association of Public eTendering Platform Providers. 

He is a speaker and researcher on public procurement and has been published by the Journal of Public Procurement. Jan holds master's degrees from the Universities of Groningen (Medicine) and the Massachusetts Institute of Technology (Business).



Jenti Vandertuig 

After serving over 14 years as head of procurement for the County of Santa Clara, CA, Jenti continues to consult and teach the art of procurement. This has included procurement advising and consulting for the San Francisco 49ers, as well as an adjunct faculty role for the University of California, Santa Cruz.


While at the County of Santa Clara, she re-engineered and revitalized the procurement department. This included building a team of world class procurement professionals, optimization of a procure-to-pay process for the agency and creating a digital vision to transition the County from paper-based processes to cloud-based digital solutions. Her focus was on leveraging technology to reduce cycle times and improve customer experience. 


Prior to coming to the US, Jenti earned her degree at the University of Madras in India. She has also completed executive certificate programs at the Harvard Kennedy School and Stanford University. 

Our conversation with Jenti includes:

  • Leading technologies that drive procurement change

  • Challenges with technology implementation

  • Skills needed for the future success of procurement

  • Early career experiences that shaped her career



Peter Smith 

Peter is the former president of the Chartered Institute of Purchasing & Supply in the United Kingdom. He has also served as managing editor for Spend Matters Europe, part of the world’s leading family of procurement websites.


Peter has held executive level procurement positions in both the public and private sectors. He is a frequent columnist and well-known author and in 2010 published the book “Buying Professional Services”, published by the Economist. Peter holds a Master’s degree in Mathematics from Cambridge University and is a lecturer at for the Procurement MBA Program at the University of Birmingham. 

His latest book is Bad Buying: How organizations waste billions through failures, frauds and f*ck-ups.


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Nathan Mosley, CPPB 

is currently a sourcing manager for Facebook.

Nathan Mosley’s professional journey includes a breadth of experience. As a sourcing manager for Facebook, he manages contracts for infrastructure improvements out of their Bay Area facility. In addition to managing contractor performance deliverables, he is responsible for negotiating terms that are win-win for his employer, the prime contractors, and the subs. Nathan has a history of promoting and delivering diversity in the procurement process, as his roles at Port of Portland, Portland Public Schools, and Portland Development Commission all focused on the inclusion of minority-owned, women-owned, and emerging small businesses. 


Nathan is a graduate of Concordia University, where he earned a degree in Business Management. As a scholarship athlete in baseball, he parlayed his time on the diamond into a successful career in procurement and supply chain management. He holds the designation of Certified Professional Public Buyer (CPPB), and a Certificate in Construction Contracting from Portland State University, School of Business. 


With a life-long love of baseball and a passion for supporting young people, Nathan started Long Ball Academy. More than developing athletic skills, the program sought to build character and to develop tools for success in life.

Our conversation with Nathan will include:

  • His professional journey from aerospace to government to social media

  • The importance of promoting diversity and inclusion in procurement

  • Outreach strategies for diverse communities



Annie Teav 

  • Senior Contract Specialist, Multnomah County, OR

  • Chair of Cooperative Procurement, Columbia Chapter - NIGP

  • 2017 Buyer of the Year

  • NIGP Young Professional Scholarship Winner



Stacy Cregg, CPPO, CPPB 

  • University of South Carolina

  • NIGP Instructor

  • Past President, SCAGPO

  • Global Women Procurement Professionals



Richard Pennington, CPPO, JD 

  • Author and Constultant

  • Former State Procurement Director - Colorado

  • General Counsel for NASPO

  • 2020 Recipient, Distinguished Service Award


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William Cooper, C.P.M. 

is recognized around the world as an innovative procurement leader.

He serves as the chief procurement officer and associate vice chancellor for the University of California, Office of the President, where he leads a collaborative procurement environment comprised of the ten UC campuses. During the past seven years, the UC Procurement System has delivered on numerous key initiatives that delivered millions in savings. Bill and his team have been recognized by national and international organizations for their accomplishments and innovations.


Prior to joining the University of California, he served as CPO for Stanford University as well as the University of Missouri. Bill’s experience also includes serving as a supply chain executive in the private sector and operating his own trucking business. 


In 2019 Bill was recognized by the National Association of Educational Procurement with their highest award, the Bert C. Ahrens Achievement Award. This was bestowed in recognition of his significant contributions to the procurement profession and NAEP.

Our conversation with Bill will include:

  • His background in business, private sector and higher education

  • The power and advantages of procurement collaboration

  • Performance of Procurement-200 and Supply Chain-500 programs

  • What lies ahead for UC and higher education



Professor Guy Callender, BBus, MCom, DipEd, PhD, CPA 

is the Chair in Strategic Procurement at the University of Technology, Australia

Professor Guy Callender is one of the most widely published academics in the world when it comes to public procurement.


He served as Foundation Chair and Professor of Strategic Procurement at Curtin University in Perth, Western Australia. Although very few such positions exist in higher education, Guy set the standard for what a university program can accomplish when focused on procurement. 


His extensive publication list includes articles published in the Journal of Public Procurement, Journal of Supply Chain Management, Government Procurement, Encyclopedia of Public Administration, and International Handbook of Public Procurement. Dr. Callender has presented at numerous international conferences including NIGP, IPPC, IPSERA, and PATNET.


Guy has personally observed the advancement of the procurement profession in the recent decades, and freely shares his insights based on personal experience and academic research. 

Our conversation with Guy will include:

  • The rich history of procurement and supply chain management

  • Acceptance of procurement as a respected profession

  • Practices around the world that promote value for money

  • Thoughts on retirement and life after procurement


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Rick Grimm, FCIPS, CPPO, CPPB 

is one of the most recognizable faces of public procurement in the world. 


He serves as the chief executive officer of NIGP: The Institute for Public Procurement, a position he has held for over 20 years. Under Rick’s leadership the Institute has developed, supported, and promoted the public procurement profession in countless areas. This includes a major curriculum rewrite of NIGP courseware, the development of professional training seminars in both the classroom and online environment, and the formation of invaluable partnerships with other procurement organizations. These include NASPO, CIPS, CAPPO, FAPPO, NPI, NAEP and many others.


Rick holds a Bachelor’s in Business Administration and a Master’s in Public Administration. His experience working in the public sector is extensive, including over 12 years of overseeing the procurement and supply chain function in the K-12 environment. He is a CPPB and a CPPO and was recognized as NIGP’s Manager of the Year in 1993. Prior to being appointed as the CEO he served on the Institute’s Board of Directors. 


His impact has reached around the world, as he served as President of IFPSM, earned the highest award given by CIPS, and is a frequent presenter at IPPC and IRSPP.

Our conversation with Rick will air on Friday, May 29th. Join us as we discuss:

  • The current state of procurement in the US and abroad

  • Rick's background as a procurement officer

  • The value of education and certification, including the new NIGP credential

  • The promise of the current procurement generation and the future of the field