Here's what Comey said regarding this. But it's essentially a given that Hillary will not face such sanctions.
This is the part I take issue with. I can see not pressing charges, but it really seems like others in this position would be stripped of eligibility to receive security clearance, especially to the level of POTUS.
This is all under consideration that Comey's report paints a worse picture than what Hillary or her supporters have been insisting. The FBI says that there were dozens of e-mails classified
at the time of transmission, including several at Top Secret classification. This shoots down any claims that Hillary is merely the victim of over-classification or that up-classification shouldn't apply retroactively to insecure storage. The FBI also says that there were work-related e-mails that could only be retrieved by a pain-staking piecing of fragments from a decommissioned server. Meaning that the e-mails turned over by Hillary were not in fact complete, so she is guilty of not turning over the appropriate material. Which also contained e-mails that were classified at the time of transmission.
Furthermore, Hillary's attorneys used their own discretion and methodologies to selectively turn over the e-mails, and the FBI has deemed these methods to be insufficient. They also say that it's likely that they weren't able to examine all the e-mail content. I also think this is pretty likely. Should her concerns of privacy from the government ever outweighed an investigation that had national security implications?
I work with a government contractor and we regularly have to train for how to handle classified and sensitive but unclassified data, and I'm really confident that if I were caught in a situation like this I wouldn't get off without any repercussions.