NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q1 2017
Shares 6,865 Value ($000) $435 Avg Close — Range —
Q2 2016
Shares 1,363 Value ($000) $101 Avg Close — Range —
Q4 2015
Shares 1,706 Value ($000) $118 Avg Close — Range —
Q3 2015
Shares 1,455 Value ($000) $101 Avg Close — Range —