Must have been a bit of selling from the shares released from escrow and prior selling in expectation, no one else would have 1m shares to sell and the buyer will appear in the next top 20. The shares that were in escrow were all held by the original owners & seed investors. Some big holders, some smaller about 50 all up.
As a bit of background, prior to the Feb 2017 IPO, in May 2015 RWW was incorporated issuing 8.5m shares at < 1c. (I presume to the inventor, family etc)They then raised 7.295m shares at 10c shortly after. These were the seed investors. Rotogro Ltd bought RWW and in the IPO raised 17.6m shares at 20c and also issued 50m shares in RGI to those original investors for the marijuana rights. ($10m) So we floated with 83.4m shares of which only 24.3m were quoted on the asx with 59.1m escrowed. The bulk of these (40.4m) came out of escrow Feb '18, and the remaining 18.4m coming out of escrow a few days ago.
The original owners & seed investors predominately appear in the top 20, though there are around 50 such holders. Apart from the addition of a few new holders eg Hansons (who sold a few), the top 20 holders hasn't changed much. Ontario 1923004 (Wendy & Cyril Cook) isn't shown now, however there has been no notice of ceasing to be a substantial holder (>5%) so I presume their holding is still there but in different names.
The original owners/seed investors owned 65.8m shares after the IPO and 59.1m of them were escrowed for 12 or 24 months (275k was for a shorter period) so only about 6.7m of them freely traded. No information was given as to which were escrowed for 12 or for 24 months, not much selling when the 12 months was up, but considerable selling this last week when the final 18.4m were released. Hopefully that selling is over now.
Of course the market see's the selling and joins in thinking something is wrong, adding more pressure to the share price. As per the latest update, all is on track hopefully we'll get back to normal pricing soon.