Ann: Change of Director's Interest Notice (Andrew Pierce), page-3

Here is an interesting thing, I figured if the Chairman of LPE was buying at 1.75c, buying at 1.7 today was a good move.
Picked my time when there were 800k offered at 1.7 and buyers at 1.6, leaving me a clean buy. Placed a bid at 1.7 for 400k, leaving 400k for the next buyer.
This was the outcome the 800k offered disappeared and the remains of my bid and the buys achieved are highlighted below.( 25 minutes later and still locked as below)
Leaves me wondering what games are afoot ? Sellers not genuine? HFT creating illusions ?