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Exhibit No.
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Description
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99.1
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Exhibit
99.1 Announcement sent to the London Stock Exchange on 12 June
2024 —
Holding(s) in Company
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GB00BDR05C01
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NATIONAL GRID PLC
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UK
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An acquisition or disposal of voting rights
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JPMorgan Chase & Co.
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US
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Name
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City
of registered office
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Country
of registered office
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J.P.
Morgan Securities plc
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07-Jun-2024
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11-Jun-2024
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%
of voting rights attached to shares (total of 8.A)
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%
of voting rights through financial instruments (total of 8.B 1 +
8.B 2)
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Total
of both in % (8.A + 8.B)
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Total
number of voting rights held in issuer
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Resulting situation
on the date on which threshold was crossed or reached
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4.885012
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0.170737
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5.055749
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188151767
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Position of
previous notification (if applicable)
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Class/Type of shares ISIN code(if possible)
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Number of direct voting rights (DTR5.1)
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Number of indirect voting rights (DTR5.2.1)
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% of direct voting rights (DTR5.1)
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% of indirect voting rights (DTR5.2.1)
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GB00BDR05C01
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181797644
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4.885012
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Sub
Total 8.A
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181797644
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4.885012%
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Type of financial instrument
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Expiration date
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Exercise/conversion period
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Number of voting rights that may be acquired if the instrument is
exercised/converted
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% of voting rights
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Depository
Receipt
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2520315
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0.067722
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Sub
Total 8.B1
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2520315
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0.067722%
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Type of financial instrument
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Expiration date
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Exercise/conversion period
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Physical or cash settlement
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Number of voting rights
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% of voting rights
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Cash-settled Equity
Swap
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16/10/2024
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16/10/2024
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Cash
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58000
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0.001558
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Cash-settled Equity
Swap
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28/11/2024
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28/11/2024
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Cash
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3017
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0.000081
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Cash-settled Equity
Swap
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29/11/2024
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29/11/2024
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Cash
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21489
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0.000577
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Cash-settled Equity
Swap
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15/01/2025
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15/01/2025
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Cash
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1107
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0.000030
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Cash-settled Equity
Swap
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16/01/2025
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16/01/2025
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Cash
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39633
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0.001065
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Cash-settled Equity
Swap
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02/05/2025
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02/05/2025
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Cash
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541265
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0.014544
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Cash-settled Equity
Swap
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08/05/2025
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08/05/2025
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Cash
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4298
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0.000115
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Cash-settled Equity
Swap
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28/05/2025
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28/05/2025
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Cash
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4763
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0.000128
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Cash-settled Equity
Swap
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29/05/2025
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29/05/2025
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Cash
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909
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0.000024
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Cash-settled Equity
Swap
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30/05/2025
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30/05/2025
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Cash
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71453
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0.001920
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Cash-settled Equity
Swap
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31/05/2025
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31/05/2025
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Cash
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3089
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0.000083
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Cash-settled Equity
Swap
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03/06/2025
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03/06/2025
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Cash
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2363
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0.000063
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Cash-settled Equity
Swap
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04/06/2025
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04/06/2025
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Cash
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14437
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0.000388
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Cash-settled Equity
Swap
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24/06/2025
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24/06/2025
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Cash
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148661
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0.003995
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Cash-settled Equity
Swap
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26/06/2025
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26/06/2025
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Cash
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1614155
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0.043373
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Cash-settled Equity
Swap
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30/06/2025
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30/06/2025
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Cash
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7906
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0.000212
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Cash-settled Equity
Swap
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01/07/2025
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01/07/2025
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Cash
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1
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0.000000
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Cash-settled Equity
Swap
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02/07/2025
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02/07/2025
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Cash
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35807
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0.000962
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Cash-settled Equity
Swap
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09/07/2025
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09/07/2025
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Cash
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10000
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0.000269
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Cash-settled Equity
Swap
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17/07/2025
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17/07/2025
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Cash
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63412
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0.001704
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Cash-settled Equity
Swap
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22/07/2025
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22/07/2025
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Cash
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12646
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0.000340
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Cash-settled Equity
Swap
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23/07/2025
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23/07/2025
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Cash
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14690
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0.000395
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Cash-settled Equity
Swap
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16/01/2026
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16/01/2026
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Cash
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6323
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0.000170
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Cash-settled Equity
Swap
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28/04/2026
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28/04/2026
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Cash
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687258
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0.018467
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Cash-settled Equity
Swap
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10/06/2026
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10/06/2026
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Cash
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242
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0.000007
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Cash-settled Equity
Swap
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24/07/2026
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24/07/2026
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Cash
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37190
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0.000999
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Cash-settled Equity
Swap
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09/10/2026
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09/10/2026
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Cash
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89921
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0.002416
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Cash-settled Equity
Swap
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30/05/2028
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30/05/2028
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Cash
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2696
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0.000072
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Cash-settled Equity
Swap
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04/12/2028
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04/12/2028
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Cash
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25735
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0.000692
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Cash-settled Equity
Swap
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01/06/2029
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01/06/2029
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Cash
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41917
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0.001126
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Cash-settled
Futures
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Cash
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269425
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0.007240
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Sub
Total 8.B2
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3833808
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0.103015%
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2. Full chain of controlled undertakings through which the voting
rights and/or the financial instruments are effectively held
starting with the ultimate controlling natural person or legal
entities (please add additional rows as necessary)
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Ultimate controlling person
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Name of controlled undertaking
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% of voting rights if it equals or is higher than the notifiable
threshold
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% of voting rights through financial instruments if it equals or is
higher than the notifiable threshold
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Total of both if it equals or is higher than the notifiable
threshold
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JPMorgan Chase
& Co.
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J.P.
Morgan Securities plc
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4.791378
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4.886508%
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JPMorgan Chase
& Co.
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J.P.
Morgan Securities LLC
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JPMorgan Chase
& Co.
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J.P.
Morgan SE
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Chain of controlled undertakings:
JPMorgan Chase & Co.
JPMorgan Chase Bank, National Association (100%)
J.P. Morgan International Finance Limited (100%)
J.P. Morgan Capital Holdings Limited (100%)
J.P. Morgan Securities plc (100%)
JPMorgan Chase & Co.JPMorgan Chase Holdings LLC
(100%)
J.P. Morgan Broker-Dealer Holdings Inc. (100%)
J.P. Morgan Securities LLC (100%)
JPMorgan Chase & Co.
JPMorgan Chase Bank, National Association (100%)
J.P. Morgan International Finance Limited (100%)
J.P. Morgan SE (100%)
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11-Jun-2024
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London, United Kingdom
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NATIONAL GRID
plc
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By:
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Beth Melges
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Beth Melges
Head of Plc Governance
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