STILLWATER — Oklahoma State University will graduate an estimated 4,500 students this spring and summer, and more than 3,500 are planning to participate in one of six commencement ceremonies May 10-11 at Gallagher-Iba Arena. The ceremonies will include:

May 10

• 1 p.m.: OSU Center for Veterinary Health Sciences hooding ceremony.
• 7 p.m.: Graduate students.

May 11

• 9 a.m.: Spears School of Business with speaker Jack Allen, chairman of Hub International CFR, an insurance brokerage.
• Noon: College of Education, Health and Aviation and the College of Agricultural Sciences and Natural Resources with David A. Cockrell, co-owner of Cockrell Eyecare Center in Stillwater.
• 3 p.m.: College of Human Sciences and the College of Engineering, Architecture and Technology with Rick Muncrief, chairman/CEO of WPX Energy, an oil and gas exploration company.
• 6 p.m.: College of Arts and Sciences with speaker Kelly Ogle, news anchor at KWTV News 9 in Oklahoma City.