Yes, your assumption is correct Nikman.  When you are paid cash, it is a straightforward CGT event as you have described.  This can change however if you are paid in shares, so in the event that you were issued with REA shares in exchange for your MOC shares as an example, then under certain circumstances the ATO can grant what I believe is called "rollover relief" which - if granted - would mean that no CGT event would be deemed to have occurred - until you sell the REA shares.  Most companies usually apply for this rollover relief in the event of a scrip-for-scrip takeover (meaning shares for shares instead of cash for shares) and they then tell their shareholders if that relief has indeed been granted to them by the ATO. 

However, when it's a cash payment, such as the one you have described, there is no rollover, so it's just a basic CGT event as though you had chosen to sell the shares on-market at that price.  If you receive the payment before June 30th, or to be more precise, if the effective payment date - or the date that the transaction is deemed to have taken place - occurs prior to or on 30th June this year, then the CGT event will need to be accounted for in your FY2021 tax return.