Ann: Dimerix Completes $20M Placement, page-54

Unfortunately - the Insto's/SI's that took part in the raise will continue the selling pressure on this as they take their risk-free 5-10% returns over the next couple of weeks. It's just how they operate. I'd do the same thing if I was effectively offered the opportunity to make money risk-free. I'd be surprised if they were in it for the long-term payout in any substantial way. Maybe hold onto some until the next deal is announced and sell the next tranche.
It sucks - but that's how the ASX works.
Disappointed in how this has unfolded, but hopefully the next deal is blockbuster and makes up for the fumbling of this announcement/creating additional selling pressure on what should have been a decent re-rating.