factive verb

If we pay attention to the fact as shown below,
what does 'state' go into?

# A verb that asserts the truth of a following clause is a factive verb
e.g. I know that you were overchargedIregret that you were overcharged

#These verbs contrast with non-factive verbs which leave the proposition open
e..g. I believe he was overcharged.

## He stated categorically that he knew nothing about the deal.

It looks like belonging to the non-factive verb group at a glance.
However the subordinate clause makes it seem to be the fact of some kind of happening in the past when thinking of it in terms of reporting. Still, I simply can't make it clear. So what is your answer?