NATIONAL GRID PLC

Ticker: NGG CUSIP: 636274409 Class: SPONSORED ADR NE

CYPRESS ASSET MANAGEMENT INC/TX's Holding History (CIK: 0001030618)

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

Q4 2017

Shares 9,735 Value ($000) $573 Avg Close — Range —

Q3 2017

Shares 11,783 Value ($000) $739 Avg Close — Range —

Q2 2017

Shares 5,291 Value ($000) $332 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	9,735	$573	—	—
Q3 2017	11,783	$739	—	—
Q2 2017	5,291	$332	—	—