Ann: Becoming a substantial holder - Redbrook Nominees, page-5

This Top 20 list is from March this year, where it is shown that Redbrook held 25 million.  Why this announcement now, 5 month later??
Top 20 Shareholders as at 15/03/2018SBB

	Shareholder	Effective Date	Capital (%)	Shares	Notes
1	Pershing Australia Nominees Pty Ltd	15/03/2018	53.40	251,899,387
2	REDBROOK NOMINEES PTY LTD	15/03/2018	5.30	25,000,000
3	MRS JIYA ZHANG	15/03/2018	4.62	21,816,472
4	BNP Paribas Nominees Pty Ltd	15/03/2018	2.94	13,853,994
5	MR NARAYAN CHANDRASEKHARAN	15/03/2018	2.54	12,000,966
6	HISHENK PTY LTD	15/03/2018	2.38	11,214,500
7	Citicorp Nominees Pty Limited	15/03/2018	1.72	8,112,679
8	MR VU QUANG MINH DANG & MRS THI KIM DAU NGUYEN RISING SUPER FUND A/C>	15/03/2018	1.65	7,804,487
9	BNP Paribas Noms Pty Ltd	15/03/2018	0.93	4,372,233
10	HILL & HONE PTY LTD	15/03/2018	0.85	4,000,000
11	MR SEAN ANTHONY DENNEHY	15/03/2018	0.76	3,600,000
12	MR ZHI GANG WU & MRS LI HONG REN	15/03/2018	0.72	3,400,000
13	MR SALVATORE PETER CIANCI	15/03/2018	0.71	3,360,001
14	MR MINH VU QUANG DANG & MRS THI KIM DAU NGUYEN RISING SUPER FUND A/C>	15/03/2018	0.66	3,100,605
15	MR KOKO ZAW	15/03/2018	0.64	3,000,000
16	MR MICHAEL ERNEST GRANATA	15/03/2018	0.64	3,000,000
17	MR ANDREW RICHARD JACKSON BALL	15/03/2018	0.52	2,450,597
18	DR STEVEN G RODWELL	15/03/2018	0.50	2,352,114
19	MR MINH DANG & MR HUY DANG	15/03/2018	0.46	2,170,560
20	MR GARY STUBBS & MRS SATISH STUBBS	15/03/2018	0.42	2,000,000
21	JASON BRIAN HAMILTON	15/03/2018	0.42	2,000,000
22	PHOENIX IG PTY LTD	15/03/2018	0.42	2,000,000
23	Total Held by Top 20 Shareholders	83.20	392,508,595