Exhibit 99.1
SUMMARY
FORM6-K
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549
Report of Foreign Issuer
Pursuant to Rule 13a – 16 or 15d – 16 of
The Securities Exchange Act of 1934
Announcements sent to the London Stock Exchange
National Grid plc,1-3 Strand, London, WC2N 5EH, United Kingdom
Routine announcements in the period to
2 January 2018
| | |
| 2 January 2018 | | Transaction in own shares |
| 2 January 2018 | | Total Voting Rights |
| 2 January 2018 | | Transaction in own shares |
| 28 December 2017 | | Transaction in own shares |
| 27 December 2017 | | Transaction in own shares |
| 22 December 2017 | | Transaction in own shares |
| 21 December 2017 | | Transaction in own shares |
| 20 December 2017 | | Transaction in own shares |
| 18 December 2017 | | Transaction in own shares |
| 15 December 2017 | | Transaction in own shares |
| 14 December 2017 | | Transaction in own shares |
| 13 December 2017 | | Transaction in own shares |
| 11 December 2017 | | Transaction in own shares |
| 8 December 2017 | | Transaction in own shares |
| 8 December 2017 | | Director/PDMR Shareholding |
| 7 December 2017 | | Transaction in own shares |
| 6 December 2017 | | Transaction in own shares |
| 5 December 2017 | | Transaction in own shares |
| 4 December 2017 | | Transaction in own shares |
| 4 December 2017 | | Director/PDMR Shareholding |
Note: During the period a ‘same day’ Form6-K was issued in respect of the following National Grid plc announcements:
N/A
