Financial reports
20-F
2022 FY
Annual report (foreign)
16 May 23
NT 20-F
Notice of late annual filing (foreign)
1 May 23
20-F
2021 FY
Annual report (foreign)
16 May 22
NT 20-F
Notice of late annual filing (foreign)
2 May 22
20-F
2020 FY
Annual report (foreign)
17 May 21
NT 20-F
Notice of late annual filing (foreign)
30 Apr 21
20-F/A
2019 FY
Annual report (foreign) (amended)
22 Jun 20
20-F
2019 FY
Annual report (foreign)
15 Jun 20
NT 20-F
Notice of late annual filing (foreign)
1 May 19
20-F
2018 FY
Annual report (foreign)
1 May 19
Current reports
6-K
Report of Foreign Private Issuer
17 Apr 24
6-K
Report of Foreign Private Issuer
15 Apr 24
6-K
Report of Foreign Private Issuer
28 Mar 24
6-K
Report of Foreign Private Issuer
1 Mar 24
6-K
Report of Foreign Private Issuer
1 Mar 24
6-K
Report of Foreign Private Issuer
20 Feb 24
6-K
Report of Foreign Private Issuer
15 Feb 24
6-K
Report of Foreign Private Issuer
14 Feb 24
6-K
Report of Foreign Private Issuer
13 Feb 24
6-K
Report of Foreign Private Issuer
8 Feb 24
Registration and prospectus
25
Voluntary exchange delisting
27 Nov 23
SC TO-T/A
Third party tender offer statement (amended)
6 Aug 21
SC TO-T/A
Third party tender offer statement (amended)
12 Jul 21
SC TO-T/A
Third party tender offer statement (amended)
8 Jul 21
SC 14D9
Tender offer solicitation
25 Jun 21
SC TO-T/A
Third party tender offer statement (amended)
22 Jun 21
SC TO-T
Third party tender offer statement
16 Jun 21
SC TO-C
Information about tender offer
31 Aug 20
424B4
Prospectus supplement with pricing info
24 Jul 13
F-1MEF
Registration statement to add securities to prior F-1 registration
24 Jul 13
Proxies
No filings
Other
UPLOAD
Letter from SEC
26 Apr 23
CORRESP
Correspondence with SEC
26 Apr 23
UPLOAD
Letter from SEC
5 Apr 23
CORRESP
Correspondence with SEC
17 Feb 23
UPLOAD
Letter from SEC
20 Jan 23
CORRESP
Correspondence with SEC
15 Dec 22
UPLOAD
Letter from SEC
1 Dec 22
UPLOAD
Letter from SEC
4 Dec 19
CORRESP
Correspondence with SEC
15 Nov 19
UPLOAD
Letter from SEC
26 Sep 19
Ownership
SC 13G/A
Fratelli Investments Ltd
9 Feb 24
SC 13G
Fratelli Investments Ltd
2 Feb 23
SC 13D/A
IG4 Capital Infrastructure Investments LP
7 Mar 22
SC 13D/A
IG4 Capital Infrastructure Investments LP
3 Jan 22
SC 13D/A
IG4 Capital Infrastructure Investments LP
13 Aug 21
SC 13D/A
IG4 Capital Infrastructure Investments LP
9 Aug 21
SC 13D
IG4 Capital Infrastructure Investments LP
12 Jul 21
SC 13G/A
Grana & Montero S.A.A.
11 Feb 20
SC 13D
Grana & Montero S.A.A.
6 Jun 19
SC 13G
Grana & Montero S.A.A.
12 Apr 19