Martha Stewart was jailed for lying to federal investigators and not being poltically well connected enough while doing it. They couldn't get her on insider trading so they had to settle for the smaller charge instead. She should have taken the 5th and she'd have been fine.
Besides by your logic, Mr. Woodford should have invested Day three or four months ago well before we reached the corner if an insider trading allegation truly concerned him.
He has to make filings because he owns a large enough amount of the company that he is effectively affiliates with them. He has to follow the rules for such holders.
However, I doubt very much that he has current inside information.