Form 11-K NATIONAL GRID PLC For: Dec 31
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Rowe Price Retirement 2010 Trust; Class F | Collective Trust Fund " ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 us-gaap-ebp:EmployeeBenefitPlanParticipantDirectedMember ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 "T. Rowe Price Retirement 2005 Trust; Class F | Collective Trust Fund " ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2060 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2060 Trust Select | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2065 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2070 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement Income Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 National Grid American Depository Receipt (ADR) Fund | Common Stock ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2030 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2035 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2040 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2045 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2050 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2055 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Institutional 500 Index Trust | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Institutional Extended Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Institutional Total Bond Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Institutional Total International Stock Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2020 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Vanguard Target Retirement 2025 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2040 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2045 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2050 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2055 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2060 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2065 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 PIMCO Total Return Fund Collective Trust; Class N | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2015 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2020 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2025 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2030 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 T. Rowe Price Retirement 2035 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 ngg:NationalGridAmericanDepositoryReceiptAdrFundMember ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Self Directed Brokerage Fund ngg:EBP007Member 2025-01-01 2025-12-31 0001004315 Participants ngg:EBP007Member srt:MinimumMember 2025-01-01 2025-12-31 0001004315 Participants ngg:EBP007Member srt:MaximumMember 2025-01-01 2025-12-31 0001004315 ngg:EBP007Member 2025-12-31 0001004315 us-gaap-ebp:EmployeeBenefitPlanEmployerCommonStockMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel1Member ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel2Member ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap:CommonStockMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap:CommonStockMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:CommonStockMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap:CommonStockMember ngg:EBP007Member 2025-12-31 0001004315 us-gaap:FairValueInputsLevel3Member ngg:EBP007Member 2025-12-31 0001004315 us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2025-12-31 0001004315 ngg:EBP007Member srt:MinimumMember 2025-12-31 0001004315 ngg:EBP007Member srt:MaximumMember 2025-12-31 0001004315 Vanguard Institutional 500 Index Trust | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2060 Trust Select | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2065 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2070 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement Income Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 National Grid American Depository Receipt (ADR) Fund | Common Stock ngg:EBP007Member 2025-12-31 0001004315 Participants ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2035 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2040 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2045 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2050 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2055 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2060 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Institutional Extended Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Institutional Total Bond Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Institutional Total International Stock Market Index Trust | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2020 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2025 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Vanguard Target Retirement 2030 Trust; Class A | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2050 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2060 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2065 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2025 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2015 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2030 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2035 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2040 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2045 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 "T. Rowe Price Retirement 2005 Trust; Class F | Collective Trust Fund " ngg:EBP007Member 2025-12-31 0001004315 "T. Rowe Price Retirement 2010 Trust; Class F | Collective Trust Fund " ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2055 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Fidelity Managed Income Portfolio II; Class 3 | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 PIMCO Total Return Fund Collective Trust; Class N | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 T. Rowe Price Retirement 2020 Trust; Class F | Collective Trust Fund ngg:EBP007Member 2025-12-31 0001004315 Self Directed Brokerage Fund ngg:EBP007Member 2025-12-31 0001004315 ngg:EBP007Member 2024-12-31 0001004315 us-gaap-ebp:EmployeeBenefitPlanEmployerCommonStockMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel1Member ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel2Member ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel3Member ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap:CommonStockMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap:CommonStockMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap:CommonStockMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:CommonStockMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap-ebp:EmployeeBenefitPlanSelfDirectedBrokerageAccountMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel1Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel2Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:FairValueInputsLevel3Member us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2024-12-31 0001004315 us-gaap:DefinedBenefitPlanCommonCollectiveTrustMember ngg:EBP007Member 2024-12-31 0001004315 ngg:EBP007Member us-gaap:SubsequentEventMember 2026-01-01 2026-01-01 iso4217:USD xbrli:pure xbrli:shares utr:Year
SECURITIES AND EXCHANGE COMMISSION
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ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
For the fiscal year ended December 31, 2025
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TRANSITION REPORT PURSUANT TO 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
For the transition period from
to
Commission File Number 1-14958
National Grid USA Companies’
REQUIRED INFORMATION
The financial statements required by Form 11-K are filed as exhibits and incorporated herein by reference.
EXHIBITS
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the National Grid USA Service Company, Inc. Retirement Plans Committee (the Plan Administrator for the National Grid USA Companies’ Incentive Thrift Plan II) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
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NATIONAL GRID USA COMPANIES’ INCENTIVE THRIFT PLAN |
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| Date: June 16, 2026 |
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By |
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/s/ David Campbell |
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David Campbell |
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Chairperson, National Grid USA Service Company, Inc. Retirement Plan Committee |
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ATTACHMENTS / EXHIBITS
EX-99.1
EX-99.2
XBRL TAXONOMY EXTENSION SCHEMA
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