Yes, I recall that Elliot Management - supposedly working as an "activist investor" - had insisted they do a buyback. Guess the slope in the chart for the last year reflects their cracking the whip. They may also tender their shares in the offer. All just IMO.
DISCLAIMER: All I say is just IMHO and does not constitute investment advice. My wife informs me frequently that I know nothing. I say you should trust no one on the internet.