Financial reports
20-F
2022 FY
Annual report (foreign)
17 Feb 23
20-F
2021 FY
Annual report (foreign)
24 Feb 22
20-F
2020 FY
Annual report (foreign)
25 Feb 21
20-F
2019 FY
Annual report (foreign)
20 Feb 20
20-F
2018 FY
Annual report (foreign)
21 Feb 19
20-F/A
2017 FY
Annual report (foreign) (amended)
19 Mar 18
20-F
2017 FY
Annual report (foreign)
21 Feb 18
20-F
2016 FY
Annual report (foreign)
23 Feb 17
20-F
2015 FY
Annual report (foreign)
26 Feb 16
20-F
2014 FY
Annual report (foreign)
27 Feb 15
Current reports
6-K
Current report (foreign)
16 Apr 24
6-K
Current report (foreign)
16 Apr 24
6-K
Current report (foreign)
16 Apr 24
6-K
Current report (foreign)
11 Apr 24
6-K
Current report (foreign)
10 Apr 24
6-K
Current report (foreign)
4 Apr 24
6-K
Current report (foreign)
28 Mar 24
6-K
Current report (foreign)
14 Mar 24
6-K
Current report (foreign)
14 Mar 24
6-K
Current report (foreign)
14 Mar 24
Registration and prospectus
25-NSE
Exchange delisting
24 Nov 20
424B3
Prospectus supplement
23 Nov 20
8-A12B
Registration of securities on exchange
19 Nov 20
F-6
Registration for ADRs (foreign)
16 Oct 20
FWP
Free writing prospectus
28 Apr 15
424B2
Prospectus for primary offering
28 Apr 15
FWP
Free writing prospectus
9 Apr 15
FWP
Free writing prospectus
9 Apr 15
F-3ASR
Automatic shelf registration (foreign)
26 Mar 15
424B2
Prospectus for primary offering
26 Mar 15
Proxies
No filings
Other
IRAN
Disclosure regarding Iran Threat Reduction and Syria Human Rights Act
22 Feb 24
IRAN
Disclosure regarding Iran Threat Reduction and Syria Human Rights Act
17 Feb 23
IRAN
Disclosure regarding Iran Threat Reduction and Syria Human Rights Act
25 Feb 22
IRAN
Disclosure regarding Iran Threat Reduction and Syria Human Rights Act
25 Feb 21
EFFECT
Notice of effectiveness
24 Nov 20
CERT
Certification of approval for exchange listing
20 Nov 20
IRAN
Disclosure regarding Iran Threat Reduction and Syria Human Rights Act
20 Feb 20
UPLOAD
Letter from SEC
31 Jan 20
CORRESP
Correspondence with SEC
17 Oct 19
UPLOAD
Letter from SEC
3 Oct 19
Ownership
SC 13G/A
Artisan Partners Limited Partnership
10 Feb 23
SC 13G
Artisan Partners Limited Partnership
4 Feb 22
SC 13G/A
Artisan Partners Limited Partnership
10 Feb 21
SC 13G/A
Telefonica Brasil S.a.
12 Feb 20
SC 13G/A
Telefonica Brasil S.a.
7 Feb 19
SC 13G/A
Telefonica Brasil S.a.
7 Feb 18
SC 13G
Telefonica Brasil S.a.
3 Feb 17
SC 13D/A
Telefonica Brasil S.a.
13 Jan 16