2016 Guidance Affirmed, page-358

Excuse my maths, that 11,209,001 tranche of shares sold on 12/12/17 was Ilwella [Ilwella Pty Limited] I expect .
Ilwella held that exact number and that is 4.41% of EPW according to the Top 20 in the last Annual Report, not 1%.

TWENTY LARGEST SHAREHOLDERS
The following table sets out the 20 largest shareholders of ERM Power Limited (Company), when multiple holdings are grouped
together, and the percentage each holds of the 254,396,467 shares on issue as at 28 August 2017.
Shareholders  Shares  # %
1 St Baker Energy Holdings Pty Ltd 43,549,489 17.12
2 J P Morgan Nominees Australia Limited 21,288,327 8.37
3 HSBC Custody Nominees (Australia) Limited 13,594,561 5.34
4 Smartequity EIS Pty Ltd 12,624,454 4.96
5 Citicorp Nominees Pty Limited 11,317,657 4.45
6 Ilwella Pty Limited 11,209,001 4.41
7 Sunset Power Pty Ltd 6,435,892 2.53
8 Gaffwick Pty Limited 6,396,664 2.51
9 Andrew St Baker & Cathryn St Baker 4,466,087 1.76
10 CS Third Nominees Pty Limited 4,408,771 1.73
11 St Baker-Childs Investments Pty Ltd 4,054,228 1.59
12 Sandhurst Trustees Ltd 3,155,148 1.24
13 Trevor and Judith St Baker Family Philanthropic Pty Ltd 3,025,242 1.19
14 Philip St Baker and Peta St Baker 2,826,593 1.11
15 St Baker Sunset Holdings Pty Ltd 2,622,185 1.03
16 Sunset Power A Pty Ltd 2,538,749 1.00
17 Sunset Power B Pty Ltd 2,538,749 1.00
18 Sunset Power C Pty Ltd 2,538,749 1.00
19 Sunset Power D Pty Ltd 2,538,749 1.00
20 St Baker Investments Pty Ltd 2,282,185 0.90​

  Total 163,411,480 64.24