If the offer closes today, ZFX could on monday buy on market at...

If the offer closes today, ZFX could on monday buy on market at whatever the current price is (say 80c) however they would be limited to 19.9% shareholding. Any more than that and they would have to launch a takeover at a minimum price of any transaction made in the last four months. I think ZFX has acquired a few shares during the takeover so they would have to do a new takeover at least at $1.00.

However that's saying they are interested in doing so. Perhaps they just want a small blocking stake