"Update 2013-06-07: at the time that we wrote this post, we asked Google whether its Transparency Report included data about secret FISA court orders that would send data to the NSA. The response we received was extremely vague, but seemed to possibly be "no". In the wake of yesterday's revelations that the NSA was harvesting data from Microsoft, Yahoo!, Google, Facebook, AOL, PalTalk, Skype, Youtube and Apple, Google has now clearly confirmed that the numbers in its Transparency Report do not include the number of orders or targets for NSA surveillance."
https://www.eff.org/deeplinks/2013/03/new-statistics-about-n...
This is especially interesting, because it means Google has acknowledged the distinction between NSLs, which include a gag order, and some other even more secret directive, which services NSA surveillance.
It's also worth noting that if Google was willingly supplying anything PRISM-like, this employee would not be allowed to know without a Top Secret clearance. Any Google employees who do have such clearance face the threat of prison if they tell him or anyone else.