Hal Schusterman is the son of Charles Schusterman (1928-2000), who founded an oilfield supply business called Sampco International in Tulsa, Oklahoma, in 1961, which evolved into the privately held Samson Investment Company, one of the largest U.S. natural gas producers, sold to Kohlberg Kravis Roberts (KKR) for $7.2 billion in 2011; and Lynn Schusterman (1943-2023), a major philanthropist who co-founded the Charles and Lynn Schusterman Family Philanthropies with her husband, supporting Jewish life, education, health, and community initiatives primarily in Israel, the U.S., and former Soviet Union. He is the brother of Stacy Schusterman, who is actively involved in managing the family foundation as chair and holds significant stakes in energy investments, while Hal keeps a low public profile, has been associated with the family philanthropy efforts but does not hold prominent leadership roles publicly documented, and resides in Israel. The family fortune positions both siblings among major American philanthropists and investors.