People have been asking how many times did the top five (added 6 since Bruno in top 5 twice) WWE championship title reign holders defended their title during their reigns (counting House Shows and Live Events.) These numbers are not official but are close to the number of the times from my research. Please share in comments if you know the true amounts or dates.
-- Bruno Sammartino 2803 days (350 to 400 or so defenses)
May 17, 1963, to Jan 18, 1971
-- Bob Backlund 2,135 days (550 - 580 or so defenses)
Feb 20, 1978, to Dec 26, 1983
-- Hulk Hogan 1,474 days (460 or so defenses)
April 2, 1984, to Feb 5, 1988
-- Roman Reigns 1316 days (31 defenses)(Not including House Shows, if he did)
Aug 30, 2020 - Apr 7, 2024
-- Bruno Sammartino 1,237 days (135 or so defenses)
Dec 10, 73 - Apr 30, 77
Since Bruno Sammartino went twice, a special mention to the 6th longest reigning champion Pedro Morales.
-- Pedro Marales 1027 days (155 or so defenses)
Feb 8, 71 - Dec 1, 73
I found this interesting by someone on Reddit posted 4 years ago:
Number of successful title defenses