NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

FORT WASHINGTON INVESTMENT ADVISORS INC /OH/'s Holding History (CIK: 0001009016)

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

Q1 2017
Shares 4,917 Value ($000) $312 Avg Close — Range —
Q4 2016
Shares 4,917 Value ($000) $287 Avg Close — Range —
Q3 2016
Shares 5,396 Value ($000) $384 Avg Close — Range —
Q2 2016
Shares 5,396 Value ($000) $401 Avg Close — Range —
Q1 2016
Shares 5,396 Value ($000) $385 Avg Close — Range —
Q3 2015
Shares 5,603 Value ($000) $390 Avg Close — Range —
Q2 2015
Shares 71,390 Value ($000) $4,609 Avg Close — Range —
Q1 2015
Shares 71,183 Value ($000) $4,599 Avg Close — Range —
Q4 2014
Shares 5,619 Value ($000) $397 Avg Close — Range —
Q3 2014
Shares 5,619 Value ($000) $404 Avg Close — Range —
Q2 2014
Shares 141,319 Value ($000) $10,511 Avg Close — Range —
Q1 2014
Shares 141,319 Value ($000) $9,714 Avg Close — Range —
Q4 2013
Shares 141,319 Value ($000) $9,231 Avg Close — Range —
Q3 2013
Shares 141,319 Value ($000) $8,345 Avg Close — Range —
Q2 2013
Shares 141,757 Value ($000) $8,033 Avg Close — Range —