2025 Greek Hall of Fame inductees named
Monday, October 20, 2025
Media Contact: Katie Maltbie | Communications Specialist, Campus Life | 972-922-3503 | katie.a.rose@okstate.edu
Four distinguished Oklahoma State University alumni will be inducted into the Greek Hall of Fame, an exclusive recognition reserved for leaders who have made outstanding and lasting contributions to their industries, communities, OSU and their respective Greek chapters.
“This year’s class embodies the very best of the Cowboy spirit, representing not just success in their professional fields, but decades of dedicated leadership and commitment to future generations,” said Dr. Johnny Robinson, director of student involvement. “Their commitment is a testament to the enduring value of the Greek experience at Oklahoma State.”
This year’s inductees are:
Marcia Walker, Alpha Delta Pi
Colonel (Ret.) Marcia Booker Walker, a 1982 Alpha Delta Pi alumna, is a pioneering leader whose career spans decades of military and alumnae service. As one of the first generation of women to graduate from U.S. Air Force flight training and the first female navigator from Oklahoma, she accumulated over 1,200 flying hours during her nearly 30-year career. Upon her retirement as colonel, she stepped into the role of aerospace science instructor for the Carl Albert High School Air Force Junior ROTC for seven years and currently serves as the Alpha Delta Pi Corporation Board president, guiding the chapter's housing and residence strategy.
Teresa A. Caine Bingman, Delta Sigma Theta
Teresa A. Caine Bingman, a 1985 Delta Sigma Theta alumna, is a distinguished attorney and civic leader who served in prominent public service roles, including deputy legal counsel and cabinet secretary for the governor of Michigan and was recognized for her legal expertise as a key member of the team that secured the historic settlement in the Flint Water Crisis class action litigation. Bingman currently runs The Law Offices of Teresa A. Bingman and continues to be a champion of civil rights, economic development, equity and justice.
Robert Sullivan, Kappa Alpha Order
Robert "Sully" Sullivan, a 1966 Kappa Alpha Order alumnus, is honored for his decades of dedicated service, most notably for helping lead the successful effort to re-establish the Beta Xi Chapter at OSU in the early 1990s after an 18-year absence. Beyond that initial victory, he has served as an advisor to the men of Kappa Alpha for more than 30 years. His involvement, leadership and support earned him the Order's highest alumnus honor, the Knight Commander's Accolade, in 2014.
Robert Austin, Sigma Alpha Epsilon
Robert "Bob" Austin, a 1976 Sigma Alpha Epsilon alumnus, is recognized for his nearly 50 years of continuous leadership, highlighted by his successful orchestration of the $2 million capital campaign to renovate and expand the Sigma Alpha Epsilon house in the early 2000s. A distinguished entrepreneur, he built Helicomb International into a global industry leader while providing critical mentorship and employment opportunities to countless students over the course of his career.
Event details
The inductees will be honored at the 2025 Fraternity and Sorority Hall of Fame banquet on Thursday, Nov. 8. The banquet will take place in the Student Union Ballroom from 6-8:30 p.m.
About the Greek Hall of Fame
The OSU Fraternity and Sorority Hall of Fame was established to recognize alumni who have demonstrated extraordinary lifelong commitment to their Greek chapter, the university, and their community through professional achievement and philanthropic dedication. The Hall of Fame celebrates the lasting impact of the fraternity and sorority experience at Oklahoma State University.