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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 27 May
2025 —
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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Other
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Legal
Entity level crossing - See Section 9
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Bank
of America Corporation
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US
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22-May-2025
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26-May-2025
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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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2.922734
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2.682948
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5.605682
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274749160
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Position of
previous notification (if applicable)
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2.972203
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2.611212
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5.583415
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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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121637097
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2.481751
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US6362744095
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21613753
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0.440983
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Sub Total
8.A
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143250850
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2.922734%
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||
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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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Right
to Recall
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N/A
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N/A
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1311135
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0.026751
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Physical
Option
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16/01/2026
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N/A
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10421
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0.000213
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Sub Total
8.B1
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1321556
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0.026964%
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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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Swaps
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30/06/2025
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N/A
|
Cash
|
1565
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0.000032
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Swaps
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29/08/2025
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N/A
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Cash
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109466
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0.002233
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Swaps
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08/09/2025
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N/A
|
Cash
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16481
|
0.000336
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|
Swaps
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28/11/2025
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N/A
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Cash
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97297
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0.001985
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Swaps
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22/12/2025
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N/A
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Cash
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933465
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0.019045
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Swaps
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31/12/2025
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N/A
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Cash
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96617
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0.001971
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Swaps
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30/01/2026
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N/A
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Cash
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3576
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0.000073
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Swaps
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03/03/2026
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N/A
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Cash
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4018886
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0.081997
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Swaps
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06/03/2026
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N/A
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Cash
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124217
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0.002534
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Swaps
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31/03/2026
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N/A
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Cash
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108801829
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2.219874
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Swaps
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07/04/2026
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N/A
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Cash
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96096
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0.001961
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Swaps
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28/04/2026
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N/A
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Cash
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77646
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0.001584
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Swaps
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30/04/2026
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N/A
|
Cash
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2373123
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0.048419
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Swaps
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15/06/2026
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N/A
|
Cash
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312195
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0.006370
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Swaps
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19/06/2026
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N/A
|
Cash
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10193437
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0.207976
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Swaps
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25/06/2026
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N/A
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Cash
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74722
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0.001525
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Swaps
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26/06/2026
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N/A
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Cash
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14368
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0.000293
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Swaps
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30/06/2026
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N/A
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Cash
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27870
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0.000569
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Swaps
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31/07/2026
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N/A
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Cash
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143767
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0.002933
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Swaps
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18/11/2026
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N/A
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Cash
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388613
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0.007929
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Swaps
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25/02/2027
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N/A
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Cash
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275
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0.000006
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Swaps
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15/04/2027
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N/A
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Cash
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428778
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0.008748
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Swaps
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19/04/2027
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N/A
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Cash
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12081
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0.000246
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Swaps
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26/04/2027
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N/A
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Cash
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113584
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0.002317
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Swaps
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04/06/2027
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N/A
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Cash
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89785
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0.001832
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Swaps
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15/02/2028
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N/A
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Cash
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300182
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0.006125
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Swaps
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07/05/2030
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N/A
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Cash
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301543
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0.006152
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Call
Option
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12/06/2025
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N/A
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Cash
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294290
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0.006004
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Physical Put
Option
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20/06/2025
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N/A
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Physical
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731000
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0.014915
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Sub
Total 8.B2
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130176754
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2.655984%
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||
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||
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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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Bank of
America Corporation
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Bank of
America, National Association
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Bank of
America Corporation
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BofA
Securities, Inc.
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Bank of
America Corporation
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Managed
Account Advisors, LLC
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Bank of
America Corporation
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Merrill
Lynch, Pierce, Fenner & Smith Inc.
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Bank of
America Corporation
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U.S.
Trust Co of Delaware
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Bank of
America Corporation
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Merrill
Lynch International
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4.989003%
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Bank of
America Corporation
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BofA
Securities Europe SA
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26-May-2025
|
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United
Kingdom
|
|
|
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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