| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1980-02-04 00:00:00 | | Call Sign changed from KOSUFM to KOSU | Fix Delete Reply to |
| 1991-05-22 00:00:00 | FCC App# 157692 | FCC approved station to begin licensed operation | Fix Delete Reply to |
| 2009-07-30 22:18:38 | | Successful automated test | Fix Delete Reply to |
| 2009-11-13 00:22:56 | editor | 1000 bonus points awarded for reporting stream problem | Fix Delete Reply to |
| 2010-05-20 14:11:24 | 3tooz | Successful Volunteer Test (Windows) - 88 Seconds | Fix Delete Reply to |
| 2011-07-01 02:12:28 | editor | Stream (iPhone) worked while testing Classical Music | Fix Delete Reply to |
| 2011-09-25 14:29:26 | editor | Stream (Windows) worked while testing Prairie Home Companion | Fix Delete Reply to |
| 2013-01-17 16:08:22 | | Successful automated test | Fix Delete Reply to |
| 2024-04-13 15:04:27 | editor | Station Homepage Title changed from KOSU to KOSU: Your Trusted Source of News & Music From Oklahoma & NPR | KOSU | Fix Delete Reply to |
