Sorry to labour the point too much, but I agree its important to read SSH right. If you have a look at the disclosure from 3 July, David Mair through DM2 Investment Trust holds the same amount of shares as that specified in the 21 July disclosure (so he can't have bought 50,000 on the 17th).
3 July:
https://www.nzx.com/files/attachments/217126.pdf 21 July:
https://www.nzx.com/files/attachments/216232.pdf
[(Summary of A or D of relevant interest (excluding specified derivatives) OR Summary of A or D of Derivatives) + Details of Transaction] should be read together and, separately from Summary of OTHER relevant interest.
Interpreting this as I go - how else are people reading this?
Additionally, although its not as compelling as DM buying himself, I doubt a director would risk the performance of a fund he is involved in through buying SKL, if SKL was in trouble. Bought in at $1.26.