Samuel J. Heyman | |
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| Born | March 1, 1939 Danbury, Connecticut, US |
| Died | November 7, 2009 (aged 70) New York City |
| Nationality | American |
| Alma mater | Yale College Harvard Law School |
| Occupation | Businessman |
| Spouse | Ronnie Feuerstein |
| Children | Lazarus ("Larry") Heyman Eleanor Heyman Propp Jennifer Heyman Millstone Elizabeth Heyman Winter |
Samuel J. Heyman (March 1, 1939 – November 7, 2009) was an American businessman and hedge fund manager best known for his longtime chairmanship of the GAF Materials Corporation and International Specialty Products Inc. (ISP).