Timothy J. Tegeler: 1941-2026

Timothy J. Tegeler: 1941-2026

Timothy J. Tegeler, a longtime supporter of Saint Louis University, died March 15, 2026. He was 84 years old.

Tegeler was born in Los Angeles four days before the attack on Pearl Harbor. He moved to St. Louis when his mother, Helen (Canelis), married Jerome F. Tegeler (CSB '29), who served on Saint Louis University's board of trustees and for whom the University's Tegeler Hall is named. Tim Tegeler followed in his footsteps and supported Saint Louis University for more than 40 years, including as a member of the president's council.

"We are deeply saddened by the passing of a devoted friend and philanthropic partner whose generosity helped shape our school in lasting ways," Noelle E. Fearn, Ph.D., dean of SLU's School of Social Work, said. "Through the Tegeler Foundation's support of our building, named in honor of his father, and through Tim's ongoing investment in our academic programs, faculty research and student support, he deepened a family legacy that will endure in both place and purpose here in the School of Social Work at Saint Louis University."

Donald M. Linhorst, Ph.D. (Grad SW '82), professor emeritus in the School of Social Work, echoed Fearn's gratitude for Tegeler.

"His contributions were significant in assuring that Tegeler Hall is maintained as a modern, well-equipped, state-of-the art building. He also provided funding for the School's Doerr Center for Social Justice Education and Research and generously gave of his time on School committees," Linhorst said.

Tegeler attended schools in St. Louis and the Virginia Episcopal School in Lynchburg, Virginia, before graduating from the University of Arizona in 1964.

After service in the Missouri Air National Guard, Tegeler began his career in the investment business with his father's firm, Dempsey-Tegeler and Co. He later joined Stifel, Nicolaus and Co. for several years. In 1982, Tegeler joined the board of directors of Siboney Corporation and became CEO and chairman in 1983. Reorganizing the company, he built a subsidiary, Siboney Learning Group, into a leading provider of educational software in the United States. He retired in 2009. In 2000, he was inducted into the University of Arizona School of Entrepreneurial Studies Hall of Fame.

In addition to his support of SLU, he also served several institutional organizations, including as a board member of Mercy Hospital Foundation.

Tegeler was a member of Algonquin Golf Club for nearly 60 years. He served on the AGC board for nine years and was asked to be president in celebration of the club's 2003 Centennial Year. In 2021, Tegeler and his wife, Nancy, started the AGC Employee Educational Foundation, a nonprofit that raises money to provide higher education scholarships for Algonquin employees and their families.

"Tim was a humble, gracious man," Linhorst said. "I very much admired and respected him, and I will miss our many wide-ranging conversations. His legacy with the School of Social Work will be enduring.

Tegeler is survived by his wife of 41 years, Nancy (Walther), and daughter, Tiffany Roberts, and her son, Zachary Sexton, and a stepson Bill (Sabrina) Mixon and their daughter, Emily. He was previously married to Kathleen Walker Pratt.

Friends are invited to a Celebration of Life Reception at Algonquin Golf Club, 340 N. Berry Rd., Glendale, Missouri, 63122 on Sunday, March 22, beginning at 1 p.m.