The social network's CEO and co-founder laid out his plans to around 200 investors at an initial public offering (IPO) presentation in Palo Alto, California, ahead of Facebook's imminent stock market launch.
Reuters understands that Wall Street investors are concerned about Zuckerberg's ability to generate revenue from his company's line of mobile apps, where fewer adverts are served per user.
Facebook, which is experiencing a user shift towards portable media, announced plans to introduce ads and sponsored stories to its mobile services earlier this year, though it is yet to produce figures to illustrate how lucrative this move has been.
Zuckerberg and his associates rate the company's shares at between $28 (£17.30) and $35 (£21.60) each, which values Facebook somewhere between $85bn and $95bn (£52bn-£59bn) ahead of its IPO.
Sources claim that its IPO was oversubscribed one week before final pricing.