Among the founding members were: Carlos M. Vidal, Jafet Ramirez Ledesma, Jose Antonio Luiña, Jose Enrique Del Valle, Juan Pedrosa, Luis A. Berrios, Pedro Urbiztondo, Pedro A. Mattei, Ruben Gaztambide Arrillaga, Baltasar Quinones Elias, Edwin Cortes Garcia, among others.

These members came together on the Rio Piedras Campus and decided to form their social fraternity based on the principles of appreciation, respect, and tolerance, among other qualities.

Believing this, they established a non-profit organization to develop helpful community-oriented citizens, promoting sincere friendship and a sense of brotherhood.

The governing bodies can only take action based on the rules of the fraternity, but the executive decision relies on the General Assembly, which is composed of zone and chapter delegates.

As a result, the fraternity has many community-based programs, such as drug prevention campaigns, charity sports tournaments, and blood drives for local hospitals and the American Red Cross.

Nu Sigma Beta also holds an annual golf tournament benefiting Instituto Santa Ana y el Colegio Caliope[5] and her organizations such as Ronald McDonald House, Hogar Niñito Jesus, United Way, and The Salvation Army.