Greenberg got his start in film working in his uncle's second-hand camera store when he was thirteen. He eventually set up his own film and photography company, obtaining the exclusive rights to footage from 1967 International and Universal Exposition or Expo 67, as it was commonly known in Montreal. In 1973 he acquired Astral Communications and subsequently combined it with his own company Ann Green Photos, named after his mother Ann Greenberg. Soon thereafter, it became one of the leading film production companies in Canada. Astral slowly evolved into a pure playmedia company and expanded through the acquisition of pay television channels, such as First Choice and The Movie Network. It would go on to become a leader in the field. Greenberg went on to produce Porky'sfranchise, one of the most successful Canadian films, spawning three sequels: , Porky's Revenge!, and Pimpin' Pee Wee. He also produced the critically acclaimed The Apprenticeship of Duddy Kravitz. Harold was a staunch advocate of the viability of Canadian and Quebec cinema, going on to play a large role in the cultural exemptions included in the North American Free Trade Agreement. He was adamant that Quebec and Canada had its own industry, each having their own, separate cultures. Harold saw that Canada had distinct needs from the United States, frequently scolding industry executive from the United States when they would group Canada within the wider North American marketplace. Greenberg was instrumental in creating a separate dubbing industry in Canada, citing the nuances separating Parisian and Canadian French.
Personal life
Greenberg was born in Montreal, Quebec, in 1930 and has three brothers, Ian, Sydney, and Harvey. His mother's name was Ann Greenberg, his aunt, Esther Kirschner, moved to the U.S. where the rest of his family resides. Known Cousins - The Berlinger Family, The Hurwitz Family, The Issacs Family
Greenberg died in 1996 and his brother, Ian Greenberg, took his place as CEO of Astral. Since 1986, The Harold Greenberg Fund/Le Fonds Harold Greenberg has invested almost $73 million in the Canadian film and television industry in over 3,250 projects.
