Here is the list that QF just published following the sale of 18.25% of QF's shares by BA recently.

1. JP Morgan Nominees Australia Ltd - 18.98%
2. Westpac Custodian Nominees Ltd - 13.48%
3. National Nominee Limited - 9.05%
4. Citicorp Nominees Pty Ltd - 7.45%
5. ANZ Nominees Ltd - 3.85%
6. RBC Global Services Australia Nominees Pty Limited - 3.63%
7. Cogent Nominees Pty Limited - 2.16%
8. AMP Life Limited - 1.33%
9. Queensland Investment Corporation - 1.32%
10. HSBC Custody Nominees (Australia) Limited - 0.92%
11. Bond Street Custodians Limited - 0.63%
12. Government Superannuation Office - 0.39%
13. Victorian Workcover Authority - 0.35%
14. UBS Nominees Pty Ltd - 0.31%
15. Permanent Trustee Australia Ltd - 0.30%
16. Equipart Nominees Pty Ltd - 0.29%
17. IAG Nominees Pty Limited - 0.28%
18. Tasman Asset Management Ltd - 0.26%
19. Merrill Lynch (Australia) Nominee Pty Ltd - 0.26%
20. Transport Accident Commission - 0.23%

So it sure looks like that family called "Nominee" sure have a lot invested in QF. And no mention of Tamesak or SIA anywhere. Also didn't see the QF WP Family Trust or BravoEcho listed above .

Source: ASX announcement - no point linking since its only valid today.