NATIONAL GRID PLC

Ticker: NGG CUSIP: 636274409 Class: SPONSORED ADR NE

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

Note: Option positions (PUT/CALL) are excluded.

Q3 2019
Shares 5,000 Value ($000) $271 Avg Close — Range —
Q2 2019
Shares 4,700 Value ($000) $250 Avg Close — Range —
Q1 2019
Shares 4,700 Value ($000) $262 Avg Close — Range —
Q3 2018
Shares 4,000 Value ($000) $207 Avg Close — Range —
Q2 2018
Shares 3,700 Value ($000) $207 Avg Close — Range —
Q1 2018
Shares 3,700 Value ($000) $209 Avg Close — Range —
Q4 2017
Shares 3,700 Value ($000) $218 Avg Close — Range —