Financial reports
20-F
2019 FY
Annual report (foreign)
29 Apr 20
20-F
2018 FY
Annual report (foreign)
30 Apr 19
20-F
2017 FY
Annual report (foreign)
26 Apr 18
20-F
2016 FY
Annual report (foreign)
27 Apr 17
20-F
2015 FY
Annual report (foreign)
28 Apr 16
20-F
2014 FY
Annual report (foreign)
29 Apr 15
20-F
2013 FY
Annual report (foreign)
29 Apr 14
20-F
2012 FY
Annual report (foreign)
22 Apr 13
20-F
2011 FY
Annual report (foreign)
27 Apr 12
20-F
2010 FY
Annual report (foreign)
31 May 11
Current reports
6-K
Sina Announces Completion of Merger
23 Mar 21
6-K
SINA to Deliver Authorization Notice to Shareholders Validly Objecting to the Merger
28 Dec 20
6-K
SINA Announces Shareholders’ Approval of Merger Agreement
23 Dec 20
6-K
SINA to Hold Extraordinary General Meeting of Shareholders
20 Nov 20
6-K
SINA Reports Second Quarter 2020 Unaudited Financial Results
29 Sep 20
6-K
SINA Enters into Definitive Agreement for “Going Private” Transaction
28 Sep 20
6-K
Current report (foreign)
7 Aug 20
6-K
SINA Announces Receipt of Preliminary Non-Binding “Going Private” Proposal
6 Jul 20
6-K
SINA Reports First Quarter 2020 Unaudited Financial Results
20 May 20
6-K
SINA Reports Fourth Quarter and Fiscal Year 2019 Unaudited Financial Results
27 Feb 20
Registration and prospectus
15-12B
Securities registration termination
2 Apr 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
S-8 POS
Registration of securities for employees (post-effective amendment)
26 Mar 21
SC 13E3/A
Going private transaction (amended)
23 Mar 21
Proxies
DEFA14A
Additional proxy soliciting materials
12 May 06
DEF 14A
Definitive proxy
1 May 06
DEF 14A
Definitive proxy
29 Aug 05
DEF 14A
Definitive proxy
25 May 04
DEF 14A
Definitive proxy
27 Aug 03
PRER14A
Preliminary revised proxy
22 Aug 03
PRE 14A
Preliminary proxy
8 Aug 03
DEF 14A
Definitive proxy
22 Oct 02
PRE 14A
Preliminary proxy
30 Sep 02
DEF 14A
Definitive proxy
19 Oct 01
Other
CORRESP
Correspondence with SEC
9 Nov 20
UPLOAD
Letter from SEC
4 Nov 20
UPLOAD
Letter from SEC
14 Nov 19
CORRESP
Correspondence with SEC
8 Nov 19
CORRESP
Correspondence with SEC
29 Oct 19
CORRESP
Correspondence with SEC
8 Oct 19
UPLOAD
Letter from SEC
1 Oct 19
CORRESP
Correspondence with SEC
23 Sep 19
UPLOAD
Letter from SEC
10 Sep 19
UPLOAD
Letter from SEC
13 Sep 16
Ownership
SC 13G/A
WEIBO Corp
7 Feb 24
SC 13G/A
Pintec Technology Holdings Ltd
31 Jan 24
SC 13G/A
WEIBO Corp
10 Feb 23
SC 13G
TuSimple Holdings Inc.
14 Feb 22
SC 13G/A
WEIBO Corp
28 Jan 22
SC 13D/A
CHAO CHARLES GUOWEI
24 Mar 21
SC 13G/A
CAPITAL VENTURES INTERNATIONAL
16 Feb 21
SC 13G/A
Oasis Management Co Ltd.
16 Feb 21
SC 13G/A
MORGAN STANLEY
12 Feb 21
SC 13G/A
SCHRODER INVESTMENT MANAGEMENT NORTH AMERICA INC/ DE
12 Feb 21