I would guess that this is a case of so-called fixed-income investments. Since the redemption procedure is now underway, you receive penalty interest (currently 4% p.a.) on the shares according to the Interest Act for the duration of the redemption until the day the redemption is completed and the shares are transferred to Sega’s control.
If someone has a lot of cash and their rules mandate investing it only in equities, these redemption procedures are one of the few ways to get a completely zero-risk return with stocks. So if, for example, a portfolio manager of a pure equity fund has a bearish view, they can park cash in these, making a guaranteed small return with zero risk. This year, it has been quite normal for shares to sometimes be traded at slightly above the tender offer price while the redemption process is ongoing.