IMO, ... If he "let someone in on the cheap" it would have shown as a transaction and classified as a "private sell" and (-)negative 1.9mil shs would have been deducted from his holdings. Since there is a corresponding (+)plus 1.9 mil shs, this would indicate the shs are still in Sankar's control and the transaction was some sort of bookkeeping entry to re-classify those shares for whatever reason.
The TSX approved a sale of 1.5 mil shs, not 1.9 mil. Therefore, I'm not sure the two are even related.
I am trying to get some clarification, but it seems when you ask difficult questions, as with most IR Dept's, they turtle and refuse to talk or answer.