December 3, 1941-March 15, 2026

Timothy J. Tegeler of Glendale, Missouri died on Sunday March 15, 2026 at Mercy
Hospital after suffering a sudden fall while out running errands. He was 84.
He is survived by his wife of 41 years, Nancy (nee Walther), and daughter, Tiffany
Roberts of Littleton, Colorado and her son, Zachary Sexton and a stepson Bill (Sabrina)
Mixon of Muncie, Indiana and their daughter, Emily. He was previously married to
Kathleen Walker Pratt.

Born in Los Angeles, CA four days before the attack on Pearl Harbor, Tim moved to St.
Louis when his mother Helen (nee Canelis) married Jerome F. Tegeler. He attended
schools in the Ladue school district and Virginia Episcopal School in Lynchburg, VA
before graduating from the University of Arizona in 1964. After service in the Missouri
Air National Guard, Tim began his career in the investment business with his father’s
firm Dempsey-Tegeler and Co. Thereafter, Tim joined Stifel, Nicolaus and Co. for
several years.

In 1982, Tim 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, Tim was inducted into the University of Arizona School of
Entrepreneurial Studies Hall of Fame.

Over the years, Mr. Tegeler served on several institutional organizations, primarily as a
Board Member of Mercy Hospital Foundation and a member of Saint Louis University’s
President’s Council. Tegeler Hall at SLU is named after his father, which Tim has supported for
more than 40 years.

Tim was a member of Algonquin Golf Club having served on the Board for 9 years and
was asked to be President in celebration of AGC’s 2003 Centennial Year. A member for
nearly 60 years, he cherished the friendships he made there with many members and
staff. In 2021, Tim and Nancy started a 501c3 not-for-profit called the AGC Employee
Educational Foundation which raises money to provide higher education scholarships
for Algonquin employees and their families, which to date has awarded more than
$128,000 to employees and their family members. In addition to Algonquin, Tim
belonged to several clubs over the years in the Palm Beach, Florida area.

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

In lieu of flowers memorial contributions suggested to the AGC Employees Educational
Foundation at 1398 Beverly Ave, Glendale MO 63122.