That actually means "Hillary Clinton, being FOUND guilty of ..."
IOW, You need an actual ruling.
Comey admitted that Hillary did the things that are spelled out in part (a) of the statute. That is beyond debate.
Because she did those things, as the FBI investigation showed, the statute applies - court ruling or no.
The statutes don’t require an actual ruling.
The phrase you mention is not in there.
The investigation into her had the fbi releasing statements that affirm she violated these statutes.