No need to sue for that reason. The NOBO list shows how much stock each holder has, and the DTCC also keeps records. If he wanted investors to provide any info, he could have just sent a letter requesting it.
Of all the guesses thrown out here, IMO that one makes the least sense.
-----
"We simply attempt to be fearful when others are greedy and to be greedy only when others are fearful."
-- Warren Buffett