NGG — National Grid plc Stock Price, Chart & AI Report

Positive Apr 16, 2026 • 14:00 UTC GlobeNewswire Inc. • Escalent

Electric, Natural Gas and Combination Utilities See Customer Experience Gains Stall as Billing Friction Reemerges

Customer Effort scores for US utilities declined by one point year-over-year to 722, signaling a setback driven primarily by billing and payment friction. Despite the overall decline, 31 utilities were recognized as 'Easiest to Do Business With,' with leading practices including improved bill transparency and customer support programs. The decline reflects affordability pressures and the need for utilities to better communicate billing information and provide payment flexibility.

NGG PEG ED D customer experience billing friction customer effort utility companies

Sentiment note

Recognized as 'Easiest to Do Business With' with a Customer Effort score of 739 (top decile). Highlighted as a leading example for offering multilingual bill explainers, video explanations, and integrated savings programs.

Neutral Mar 27, 2026 • 06:00 UTC GlobeNewswire Inc. • Arcadis

Arcadis nominates Carl Trowell to its supervisory board

Arcadis announces the nomination of Carl Trowell, President of Strategic Infrastructure at National Grid PLC, to its Supervisory Board for a four-year term. Trowell brings over 30 years of experience in energy and infrastructure projects. The nomination will be submitted at the AGM on May 20, 2026. Current board chair Michiel Lap will retire after 11 years, with Peter de Wit succeeding him as Chair.

NGG supervisory board nomination Carl Trowell National Grid board transition energy infrastructure AGM 2026

Sentiment note

National Grid is mentioned as the current employer of the nominated board member. The mention is factual and contextual, providing background on Trowell's experience without indicating any material impact on National Grid itself.

Positive Feb 6, 2026 • 08:15 UTC GlobeNewswire Inc. • Hargreave Hale Aim Vct Plc

Interim Management Statement Q1 2026

Hargreave Hale AIM VCT reported a NAV decrease of 3.43% in Q1 2026 (Oct-Dec 2025), with qualifying investments declining 1.24p per share while non-qualifying investments gained 0.16p. The portfolio benefited from strong performers like Hardide and Skillcast but was weighed down by significant losses in Cohort and Diaceutics. The VCT maintained 84.11% investment levels and made £2.8m in new qualifying investments during the period.

NGG CMGMY VCT NAV performance AIM investments UK equities portfolio performance qualifying investments

Sentiment note

Continued strong performance in non-qualifying portfolio

Negative Jan 14, 2026 • 00:28 UTC GlobeNewswire Inc. • The Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

The Rosen Law Firm is investigating potential securities claims against National Grid plc following allegations of materially misleading business information. The investigation was prompted by a July 2025 Reuters report revealing that a fire at London's Heathrow Airport in March was caused by National Grid's failure to maintain an electricity substation, despite the issue being identified seven years prior. National Grid's ADSs fell 5% following the news disclosure.

NGG securities class action National Grid Heathrow fire power grid failure investor losses misleading information

Sentiment note

The company faces securities litigation over allegations of issuing materially misleading information. A critical infrastructure failure at Heathrow Airport was caused by National Grid's negligence in maintaining equipment despite the problem being identified seven years earlier, resulting in a 5% stock price decline and potential investor compensation claims.

Negative Jan 14, 2026 • 00:19 UTC GlobeNewswire Inc. • Rosen Law Firm

ROSEN, A TRUSTED AND LEADING LAW FIRM, Encourages Ardent Health, Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action – ARDT

Rosen Law Firm has filed class action lawsuits against Ardent Health, Inc. (ARDT), F5, Inc. (FFIV), and National Grid plc (NGG) on behalf of investors who purchased securities during specified periods. The lawsuit against Ardent Health alleges misrepresentations regarding accounts receivable accounting practices and insufficient professional malpractice insurance reserves. Investors have until March 9, 2026 to move the court to serve as lead plaintiff.

ARDT FFIV NGG class action lawsuit securities fraud accounts receivable misrepresentation investor compensation

Sentiment note

Company is subject to ongoing securities claims investigation by Rosen Law Firm on behalf of shareholders, suggesting potential legal and financial exposure.

Negative Jan 10, 2026 • 19:11 UTC GlobeNewswire Inc. • The Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

The Rosen Law Firm is investigating potential securities claims against National Grid plc following allegations of materially misleading business information. The investigation was prompted by a July 2025 Reuters report revealing that a fire at London's Heathrow Airport in March was caused by National Grid's failure to maintain an electricity substation, despite the issue being identified seven years prior. National Grid's ADSs fell 5% following the news disclosure.

NGG securities fraud class action lawsuit National Grid Heathrow Airport fire infrastructure failure investor losses regulatory investigation

Sentiment note

The company faces securities litigation for allegedly issuing materially misleading information. A critical infrastructure failure at Heathrow Airport was caused by National Grid's negligence in maintaining equipment despite the problem being identified seven years earlier, resulting in a 5% stock price decline and regulatory investigation by the UK energy watchdog.

Negative Jan 8, 2026 • 00:49 UTC GlobeNewswire Inc. • The Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

The Rosen Law Firm is investigating potential securities claims against National Grid plc following allegations of materially misleading business information. The investigation was triggered by a July 2025 Reuters report revealing that National Grid failed to maintain an electricity substation that caused a fire at London's Heathrow Airport in March 2025, despite the issue being identified seven years prior. National Grid's ADSs fell 5% following the news disclosure.

NGG securities fraud class action lawsuit National Grid Heathrow Airport fire investor losses misleading disclosures

Sentiment note

The company is facing securities litigation for allegedly issuing materially misleading information. A preventable infrastructure failure caused significant disruption (airport closure), and the underlying issue was known for seven years but not addressed, indicating potential negligence and mismanagement that could result in financial penalties and reputational damage.

Negative Jan 2, 2026 • 17:55 UTC GlobeNewswire Inc. • Rosen Law Firm

FCX IMPORTANT DEADLINE: ROSEN, TOP RANKED GLOBAL COUNSEL, Encourages Freeport-McMoRan Inc. Investors to Secure Counsel Before Important January 12 Deadline in Securities Class Action First Filed by the Firm - FCX

Rosen Law Firm has filed securities class action lawsuits against Freeport-McMoRan Inc., Telix Pharmaceuticals Ltd., and National Grid plc. The FCX lawsuit alleges the company made false statements regarding safety at its Grasberg Block Cave mine in Indonesia and failed to disclose heightened regulatory and reputational risks. Investors who purchased securities during specified class periods are encouraged to join the litigation before upcoming deadlines.

FCX TLX NGG securities class action investor lawsuit false statements safety violations regulatory risk

Sentiment note

Company is subject of ongoing securities investigation by Rosen Law Firm regarding potential shareholder claims, indicating alleged misconduct or disclosure violations.

Negative Nov 6, 2025 • 23:33 UTC GlobeNewswire Inc. • Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

A potential securities class action lawsuit has been initiated against National Grid following a Reuters report about a Heathrow airport fire caused by power grid maintenance failures, which led to a 5% drop in the company's stock price.

NGG securities lawsuit power grid Heathrow airport investor losses

Sentiment note

The article highlights a critical report suggesting systemic maintenance failures that caused a significant airport disruption, with an official report noting an unaddressed issue from seven years prior, leading to potential legal action and stock price decline

Negative Oct 30, 2025 • 22:20 UTC GlobeNewswire Inc. • Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

Rosen Law Firm is investigating potential securities claims against National Grid following a Reuters report about a Heathrow airport fire caused by power grid maintenance failures, which led to a 5% drop in the company's stock price.

NGG securities claims investor losses power grid Heathrow airport maintenance failure

Sentiment note

The article highlights a critical infrastructure failure at a Heathrow airport substation that was identified seven years prior but remained unaddressed, resulting in significant disruption and a stock price decline

Negative Oct 27, 2025 • 23:52 UTC GlobeNewswire Inc. • Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

Rosen Law Firm is investigating potential securities claims against National Grid following a report about a Heathrow airport fire caused by power grid maintenance failures, which led to a 5% drop in the company's stock price.

NGG securities claims investor losses power grid Heathrow airport maintenance failure

Sentiment note

The article highlights a critical report indicating systemic maintenance failures that caused a significant airport disruption, suggesting potential negligence and resulting in stock price decline

Negative Oct 21, 2025 • 23:30 UTC GlobeNewswire Inc. • Rosen Law Firm

NGG Investor News: If You Have Suffered Losses in National Grid plc (NYSE: NGG), You Are Encouraged to Contact The Rosen Law Firm About Your Rights

Rosen Law Firm is investigating potential securities claims against National Grid following a Reuters report about a Heathrow airport fire caused by power grid maintenance failures.

NGG securities claim investor losses power grid Heathrow airport maintenance failure

Sentiment note

The company is facing potential legal action due to an official report highlighting a preventable fire at Heathrow airport, which was caused by unaddressed maintenance issues identified seven years earlier. The stock price dropped 5% after the news, indicating investor concern.