NEW YORK, Aug. 19, 2025 (GLOBE NEWSWIRE) -- The law firm of Kirby McInerney LLP is investigating potential claims against National Grid USA Service Company, Inc. (“National Grid” or the “Company”) (NYSE: NGG). The investigation concerns whether National Grid and/or certain of its officers have violated the federal securities laws and/or engaged in other unlawful business practices.

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On July 1, 2025, the United Kingdom’s energy system operator, National Energy System Operator (“NESO”), published a report summarizing the findings of its investigation into the March 20, 2025 fire that caused Heathrow Airport to shut down. NESO’s report stated that the fire was caused by a known fault at an electrical substation owned by National Grid, which had been aware of the problem since 2018 but failed to fix it. On this news, the price of National Grid’s American Depositary Receipt (“ADR”) declined by $3.77 per ADR, or approximately 5.07%, from $74.38 per share on July 1, 2025 to close at $70.61 on July 2, 2025.

If you purchased or otherwise acquired National Grid securities, have information, or would like to learn more about this investigation, contact Thomas W. Elrod of Kirby McInerney LLP by email at investigations@kmllp.com, or by filling out the form below to discuss your rights or interests with respect to these matters without any cost to you.

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Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars.

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Contacts
Kirby McInerney LLP
Thomas W. Elrod, Esq.
212-699-1180
https://www.kmllp.com
investigations@kmllp.com