There's no evidence suggesting that the Directors are or will be buying, you'd think they have enough invested already and might like to see fresh money coming in. The upcoming SPP is on top of a successful $3m cap raise and a chance for shareholders to accumulate at $0.40 minimum or 7-day VWAP average prior to 25 June. The max SPP investment will be $15k as per NZAX rules.
Over the next few months discussion may gradually move to the ASX listing focus where the liquidity is far greater. HotCopper.com.au already has a thread for VML. Enjoy.