NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2017
Shares 4,708 Value ($000) $299 Avg Close — Range —
Q4 2016
Shares 4,608 Value ($000) $269 Avg Close — Range —
Q3 2016
Shares 5,308 Value ($000) $377 Avg Close — Range —
Q2 2016
Shares 164,790 Value ($000) $12,249 Avg Close — Range —
Q1 2016
Shares 164,790 Value ($000) $11,769 Avg Close — Range —
Q4 2015
Shares 164,790 Value ($000) $11,459 Avg Close — Range —
Q3 2015
Shares 385,362 Value ($000) $26,833 Avg Close — Range —
Q2 2015
Shares 391,425 Value ($000) $25,274 Avg Close — Range —
Q1 2015
Shares 492,010 Value ($000) $31,789 Avg Close — Range —
Q4 2014
Shares 554,210 Value ($000) $39,160 Avg Close — Range —
Q3 2014
Shares 558,610 Value ($000) $40,153 Avg Close — Range —
Q2 2014
Shares 568,410 Value ($000) $42,278 Avg Close — Range —
Q1 2014
Shares 614,920 Value ($000) $42,270 Avg Close — Range —
Q4 2013
Shares 662,720 Value ($000) $43,289 Avg Close — Range —
Q3 2013
Shares 626,010 Value ($000) $36,966 Avg Close — Range —
Q2 2013
Shares 498,510 Value ($000) $28,251 Avg Close — Range —