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National Grid Transco (NGG) SEC Filings & 10K Form

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$71.40 -0.16 (-0.22%)
Closing price 08/15/2025 03:58 PM Eastern
Extended Trading
$71.43 +0.03 (+0.04%)
As of 08/15/2025 07:01 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Recent National Grid Transco SEC Filings

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DateFilerForm TypeView
08/14/2025
5:36 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/31/2025
11:41 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/17/2025
11:51 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/16/2025
5:54 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/09/2025
12:04 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
07/01/2025
8:08 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/30/2025
5:36 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/13/2025
2:23 PM		National Grid Transco (Filer)
Form 11-K
Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d)  
06/05/2025
11:38 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/04/2025
1:03 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
06/02/2025
5:37 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/30/2025
8:20 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/30/2025
6:11 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/29/2025
12:50 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/29/2025
8:30 AM		National Grid Transco (Filer)
Form 20-F
Registration statement / Annual report / Transition report  
05/29/2025
5:24 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/22/2025
12:02 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/15/2025
9:28 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/15/2025
9:31 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
05/01/2025
7:49 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/30/2025
5:25 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/28/2025
11:09 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
04/23/2025
6:47 PM		BlackRock, Inc. (Filed by)
National Grid Transco (Subject)
Form SCHEDULE 13G/A
04/10/2025
7:09 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
03/31/2025
6:54 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
03/26/2025
12:35 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
02/28/2025
5:20 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
02/24/2025
5:54 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
01/31/2025
5:08 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
01/14/2025
8:45 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
01/13/2025
6:11 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
12/31/2024
5:17 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
12/18/2024
11:39 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/29/2024
10:03 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/29/2024
6:48 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/29/2024
6:18 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/26/2024
11:52 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/25/2024
12:16 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/18/2024
12:26 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/07/2024
5:16 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
11/07/2024
5:14 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
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10/31/2024
7:02 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
10/03/2024
6:19 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
09/30/2024
1:09 PM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
09/26/2024
7:49 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
09/13/2024
5:13 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
08/30/2024
7:37 AM		National Grid Transco (Filer)
Form 6-K
Report of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934  
08/28/2024
9:33 AM		National Grid Transco (Filer)
Form F-3ASR
(Data available from 1/1/2016 forward)


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This page (NYSE:NGG) was last updated on 8/17/2025 by MarketBeat.com Staff
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