NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q1 2017
Shares 7,600 Value ($000) $482 Avg Close — Range —
Q4 2016
Shares 7,600 Value ($000) $443 Avg Close — Range —
Q3 2016
Shares 7,600 Value ($000) $540 Avg Close — Range —
Q2 2016
Shares 7,600 Value ($000) $565 Avg Close — Range —
Q1 2016
Shares 7,600 Value ($000) $543 Avg Close — Range —
Q4 2015
Shares 7,600 Value ($000) $529 Avg Close — Range —
Q3 2015
Shares 7,600 Value ($000) $529 Avg Close — Range —
Q2 2015
Shares 7,730 Value ($000) $499 Avg Close — Range —
Q1 2015
Shares 7,600 Value ($000) $491 Avg Close — Range —
Q4 2014
Shares 7,600 Value ($000) $537 Avg Close — Range —
Q3 2014
Shares 7,600 Value ($000) $546 Avg Close — Range —
Q2 2014
Shares 7,600 Value ($000) $565 Avg Close — Range —
Q1 2014
Shares 7,600 Value ($000) $522 Avg Close — Range —
Q4 2013
Shares 7,600 Value ($000) $496 Avg Close — Range —
Q3 2013
Shares 7,600 Value ($000) $449 Avg Close — Range —
Q2 2013
Shares 7,600 Value ($000) $431 Avg Close — Range —