Special situation (demerger, rights issue, delisting) - checklist

[StonePitbull]

Route Mobile - Internet, Mobile & Telecom

Proximus is going to pay - Rs. 1,626.40/share. Its going to be coming up with open offer for additional 26% share outstanding. The current stock price has fallen below Rs. 1500/-. What makes more sense for current retail shareholder - to sell it now at price lesser than 1,500 or wait for an open offer and tender at 1626? (I am not fully aware about how open offer thing works :() Hence looking for the guidance.

Disclosure: Added a major position today