The role of the professional staff is to serve members directly. They are here to answer questions ranging from donations to chapter support. Please do not hesitate to contact them with any questions!


Executive Vice President

Robert W. Riggs, CAE
Rensselaer Polytechnic Institute
New York Sigma – 2002

+ Bio

The National President, with the approval of the Board of Trustees shall appoint a professional Fraternity administrator under the title of Executive Vice President and may invest him with any or all authority and duties consistent with this Constitution. The Executive Vice President will be charged with the execution of the policy of the Convention and the Board of Trustees, responsibility of the general administration of the Fraternity, visitation of its chapters and preparation for the Board of Trustees such reports and recommendations as it may solicit. He shall advise the Board, but will not be a voting member of the Board.

  • Chief Staff Officer of the Fraternity
  • Manages Phi Kappa Theta’s Strategic Plan
  • Manages Phi Kappa Theta's Operational Plan
  • Leads the (iServe) Network Professionals and Volunteers
  • Manages all risk management related issues

Robert graduated cum laude in 2002 from Rensselaer Polytechnic Institute with a Bachelors of Science degree in Engineering Science. He was initiated into the New York Sigma Chapter of Phi Kappa Theta Fraternity in the spring of 1999.

Robert joined the professional staff in 2002 and has served as a Leadership Consultant, Director of Chapter Development, and Executive Director before becoming the Executive Vice President in 2007.

Robert lives in Zionsville, Indiana, with his wife, Katie, daughter, Francesca and son, Myles. In his free time he serves in various volunteer opportunities with the Indiana Society of Association Executives, Junior Chamber International Indianapolis Foundation and his Home Owners Association.

View Robert Riggs, CAE's profile on LinkedIn


Director of Member Engagement

Isaiah Adona
Washington State University
Washington Alpha Delta – 2012

+ Bio

Isaiah supports Phi Kappa Theta’s strategies in advancing active collegiate and alumni engagement with the Fraternity.

As Director of Member Experience, Isaiah does the following:

  • Develops Lifelong Member Experience Programs
  • Designs and Maintains Online Learning Community
  • Directs and Produces Storytelling Initiatives

Previously, he assisted in recolonization efforts at the University of Iowa, in Iowa City, IA as Chapter Development Coordinator. He was also the Fraternity House Director for San Diego State's Phi Iota chapter.

As a collegiate member he was the Western Province representative and Vice-Chair for the Undergraduate Advisory Committee serving on the Board of Trustees from 2011 to 2013.

View Isaiah Adona's profile on LinkedIn


Director of Finance and Operations

Sarah Everhart
Indiana Wesleyan University – 2005

+ Bio

  • Directly manages Phi Kappa Theta’s finances
  • Manages all collegiate and alumni invoicing
  • Manages Fraternity Conference Logistics
  • Manages all membership reporting issues

Sarah graduated in August 2005 from Indiana Wesleyan University with a Bachelors of Science in Accounting. She also spent three years studying accounting at Franklin College in Franklin, Indiana. Sarah enjoys spending her free time with family and friends, playing and coaching volleyball, and softball. Sarah joined the Fraternity staff in June 2007.

View Sarah Everhart's profile on LinkedIn


Director of Brand Management

Keith Harshbarger
Indiana University/Purdue University Indianapolis
National at Large – 2006

+ Bio

Leads Phi Kappa Theta in the development, implementation and maintenance, of brand strategy, positioning, messaging, marketing planning, and business results for the Organization. Directs all communication efforts to ensure Phi Kappa Theta’s stakeholders are informed of Phi Kappa Theta’s initiatives, programs and activities to inspire engagement with the Fraternity.

  • Ensure Mission/Brand Alignment
    1. Print, digital and online communications
    2. Events, Programs, Conferences and Online Communities
    3. Approve Licensed Vendor/Sponsor Developed Designs
  • Leads the Delivery of Content to Targeted Audiences
    1. Print, digital and online communications
    2. Events, Programs, Conferences and Online Communities
  • Content Management
    1. Maintain membership profiles in Association Management Software
    2. Internal Historian

Keith graduated in May of 2006 from IUPUI (Indiana University & Purdue University of Indianapolis) with a B.S. in Communications and Minor in Film. He joined Fraternity staff in March 2007.

Keith is first and foremost an artist. He enjoys drawing and desig n. Having him join Phi Kappa Theta for Brand Management helps to engage people in a more creative way. Keith enjoys movies, music, making short films, spending time with his wife, Meredith, daughter, Paisley, friends and spending time as a volunteer for his Church’s student ministry.

View Keith Harshbarger's profile on LinkedIn


Director of Chapter Operations

Johnny Hohenstein
Belmont Abbey College
North Carolina Alpha Rho – 2012

+ Bio

Johnny is a 2012 graduate of Belmont Abbey College, where he was initiated into Phi Kappa Theta in the Spring of 2009. He later served as President of the NC Alpha Rho Chapter. He has a Masters Degree in Higher Education from Northeastern University, and has spent over five years in Student Affairs in North Carolina and Alabama.

Johnny has experience in corporate hospitality management, has previously served as facilitator for regional conferences and currently chairs the marketing committee for a non-profit community theatre in Charlotte, North Carolina.

View Johnny Hohenstein's, M.Ed. profile on LinkedIn