Howard F. Ahmanson Sr. was an American businessman and philanthropist, best known for his role in the banking industry. He founded the Home Savings of America, which became one of the largest savings and loan associations in the United States. His innovative approach to banking helped shape the industry during the mid-20th century. In addition to his business success, Ahmanson was a notable philanthropist, supporting various causes, particularly in the areas of education and the arts. He was also involved in the development of the Ahmanson Theatre in Los Angeles, which reflects his commitment to cultural enrichment in the community.