From our friends at OK Policy Institute:
Oklahoma’s Open Meetings Act (25 O.S. Sections 301-314) requires all public bodies to file advance notice of regularly scheduled and special meetings with the Secretary of State, as well as advance notice of changes in date, time, or location of regularly scheduled meetings. Under the Act, agendas for regular and special meetings must be posted in a publicly-accessible location for at least 24 hours prior to its meeting, and agendas must identify all items of business of the meeting. Click here to read more.