The Fourth Founding was the fourth mass expansion wave of the 4chan Cup, represented by the teams founded after the 2012 4chan Spring Babby Cup. These new teams brought the total number of clubs to an even 48, allowing for stable promotion and relegation between the Babbies and Elite tournaments. The Fourth Founding teams would first compete in the 2012 4chan Autumn Babby Cup.
- As of the conclusion of the 2018 4chan Summer Cup, 4 different Fourth Founding teams have won cups (4 Elite Cups and 1 Babby).
- As of the conclusion of the 2019 4chan Spring Babby Cup, the Fourth Founding teams have a combined total of 16 "medal" finishes; 5 first place finishes, 5 second place finishes, and 6 third place finishes. In addition, /wg/ are one of only five teams to have legitimately won multiple cups.
- As of the conclusion of the 2019 4chan Spring Babby Cup, /u/ have the highest efficiency out of this Founding at 51.06%, while /hm/ have the lowest at 27.27%.