Welcome to our dedicated page for National Grid SEC filings (Ticker: NGG), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
National Grid’s cross-Atlantic operations make its disclosures unusually dense; one annual report 10-K must reconcile UK price-control frameworks with U.S. rate-base math. If you have searched for storm-cost recovery details or tried to track executive stock sales across subsidiaries, you know the challenge.
Stock Titan solves that problem with AI-powered summaries that turn multi-jurisdiction documents into clear takeaways. The platform delivers real-time alerts the moment a National Grid insider trading Form 4 transaction or an 8-K hits EDGAR, then highlights what matters—allowed returns, capital-expenditure guidance, or renewable-integration costs. Key filings are mapped to specific questions investors ask:
- 10-K / 20-F – “National Grid annual report 10-K simplified” shows regulated earnings drivers and debt-ahead-of-rate case schedules.
- 10-Q – “National Grid quarterly earnings report 10-Q filing” surfaces segment margins and weather impacts.
- 8-K – “National Grid 8-K material events explained” flags rate-case rulings or storm-related cost deferrals.
- Form 4 – “National Grid executive stock transactions Form 4” gives context to insider moves, complete with trend charts.
- DEF 14A – “National Grid proxy statement executive compensation” outlines incentive structures tied to grid-modernization metrics.
Whether you’re comparing cap-ex across periods, monitoring “National Grid Form 4 insider transactions real-time,” or simply understanding National Grid SEC documents with AI, Stock Titan delivers concise, actionable insights. Stop scrolling through PDFs and focus instead on rate-base growth, dividend safety, and emerging-grid investment—information our AI distills from every National Grid earnings report filing analysis.
National Grid plc reports that UK regulator Ofgem has published its Final Determination for the RIIO-T3 framework governing National Grid Electricity Transmission from April 2026 to March 2031. The package includes a real allowed cost of equity of 6.12% at 60% gearing, which will help shape future returns from the regulated transmission business.
National Grid welcomes Ofgem’s recognition of the need for significant investment to nearly double electricity transfer capacity while maintaining high reliability, but will now review the full determination to judge whether it provides an overall framework that is both investable and workable. The company will focus on the incentive framework and totex mechanisms, assessing if they allow high-performing networks to earn a globally competitive return and recover efficient investment costs.
Ofgem is expected to publish proposed licence modifications for consultation, ahead of a licence decision in February. Relevant parties will then have 20 working days to assess the licence changes, and National Grid anticipates announcing its formal response in early March 2026.
National Grid plc has completed the sale of its Grain LNG business to a consortium made up of Centrica plc and Energy Capital Partners, which is part of Bridgepoint Group plc. This transaction removes Grain LNG from National Grid’s portfolio and transfers ownership to a mix of a multinational energy company and an energy transition-focused infrastructure investor.
National Grid describes itself as one of the largest publicly listed energy network companies, operating critical electricity and gas networks in the UK and US. The company emphasises its role in providing secure, affordable and cleaner energy while supporting economic growth, and positions this move within a broader strategy of focusing on reliable and resilient energy networks for the future.
National Grid plc filed an update covering its share capital and recent insider share purchases. As of 31 October 2025, the company’s registered capital comprised 5,191,884,002 ordinary shares, including 230,345,795 shares held in treasury, leaving 4,961,538,207 shares with voting rights. This figure is the reference shareholders use to determine when they must notify changes in their holdings under UK disclosure rules.
The filing also reports routine purchases of ordinary shares by senior management under National Grid’s Share Incentive Plan. On 7 November 2025, Chief Financial Officer Andy Agg, Chief Executive John Pettigrew and Chief People Officer Will Serle each acquired 13 partnership shares at a price of GBP 11.588 per share. In addition, on 17 November 2025 Non-Executive Director Iain Mackay bought 4,500 ordinary shares at GBP 11.735285 per share on the London Stock Exchange.
National Grid plc has set the scrip dividend reference prices for its 2025/26 interim dividend and confirmed the payment timetable. Ordinary shareholders can take shares instead of cash at a scrip reference price of 1,130.40 pence per share, based on the average closing mid-market price over the five dealing days starting on the ex-dividend date. ADR holders have a scrip ADR reference price of
The 2025/26 interim dividend has been declared at 16.35 pence per ordinary share and
National Grid plc reports that it has received a major shareholding notification from BlackRock, Inc. under the Disclosure and Transparency Rules. BlackRock now holds a total interest of 8.120000% in National Grid voting ordinary shares, representing 403585440 voting rights. This consists of 4.870000% of voting rights attached to shares, equal to 241775449 voting rights, and a further 3.250000% through financial instruments. These instruments include American Depository Receipts with 5135800 voting rights (0.100000%), securities lending positions with 154479948 voting rights (3.110000%), and CFDs with 2194243 voting rights (0.040000%). Previously, BlackRock’s total position was 7.990000%, made up of 7.070000% via shares and 0.920000% via financial instruments.
National Grid plc reported stronger half-year performance driven by regulated investment on both sides of the Atlantic. Underlying operating profit was £2,292 million, up 12% at actual currency (13% at constant currency), and statutory operating profit rose 17% to £1,526 million. Underlying EPS increased 6% to 29.8p. The Board declared an interim dividend of 16.35p per share. Capital investment reached a record £5,052 million in the half, supporting UK transmission projects and US grid upgrades; net debt stood at £41.8 billion as of 30 September 2025.
Management reiterated its five‑year plan to invest around £60 billion, targeting Group asset growth of about 10% CAGR and underlying EPS CAGR of 6–8% from a 73.3p 2024/25 baseline. During the period, regulators approved NIMO’s three‑year rate case in New York and about $600 million under Massachusetts’ ESMP, with approximately 75% of the US five‑year investment already approved. The company expects to invest over £11 billion in 2025/26 and modestly raised FY2026 guidance. CEO succession is set for November 2025, with Zoë Yujnovich succeeding John Pettigrew.
National Grid plc furnished a Form 6-K announcing that its accompanying Exhibit 99.1—an announcement sent to the London Stock Exchange titled “National Grid 2025/26 Half Year Results Statement”—has been provided.
The report and Exhibit 99.1 are incorporated by reference into the company’s registration statements on Form F-3 and Form S-8, becoming part of those filings from the date of submission, to the extent not superseded by later filings. The company notes the filing date as 6 November 2025.
National Grid plc furnished a Form 6-K updating its share capital and voting rights and disclosing routine PDMR share purchases. As of 30 September 2025, registered capital was 5,191,884,002 ordinary shares, including 230,434,106 held in treasury, leaving 4,961,449,896 shares with voting rights for disclosure calculations.
PDMR transactions on the London Stock Exchange on 7 October 2025 under the Share Incentive Plan: CFO Andy Agg bought 14 shares at GBP 10.835; CEO John Pettigrew bought 13 shares at GBP 10.835; and Chief People Officer Will Serle bought 14 shares at GBP 10.835.
National Grid plc filed a 6-K attaching three London Stock Exchange announcements: a Voting Rights update, a Notification of PDMR transactions and publication of a Prospectus. The Voting Rights notice states the company had 5,191,884,002 ordinary shares as of 31 July 2025, of which 230,653,898 were treasury shares, leaving 4,961,230,104 shares with voting rights to be used as the denominator for FCA disclosure calculations. The Prospectus relates to a €20,000,000,000 Euro Medium Term Note Programme and has been submitted to the National Storage Mechanism; a link to the published PDF is provided.
National Grid plc has submitted its response to Ofgem's RIIO-ET3 Draft Determination, welcoming the regulator's commitment to an £80 billion electricity transmission investment plan and changes to the financial package since the Sector Specific Methodology Decision. The company says the Draft Determination does not fully recognise the practical challenges of delivering a two-and-a-half-fold increase in transmission investment and has proposed changes to ensure the final framework is investable—by improving baseline returns and incentives—and workable—by simplifying funding mechanisms and reopener decision-making. National Grid will continue engagement with Ofgem ahead of the Final Determination in December and points to an executive summary of detailed responses on its RIIO-T3 homepage. The announcement includes a standard cautionary statement about forward-looking statements and risks.
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