Zuckerberg has apologized for the company's Beacon ad program, which lets users track their Facebook friends' activities on other sites.

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Yet, says the SEC, starting on July 16, Hertz sold the entire 54, 650 share-stake of Track Data held in name of two entities, Haor Beacon Fund, a New York nonprofit corporation whose directors included Hertz's wife, and Roxton Enterprises, described as a British Virgin Islands firm owned by Hertz's sister and brother-in-law.

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It is similar to Beacon, the free program that allows Facebook to track users' purchases and broadcast them as a newsfeed to their friends.

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