NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q1 2017
Shares 1,592 Value ($000) $101 Avg Close — Range —
Q3 2016
Shares 4,442 Value ($000) $316 Avg Close — Range —
Q2 2015
Shares 469 Value ($000) $30 Avg Close — Range —
Q1 2015
Shares 2,002 Value ($000) $129 Avg Close — Range —
Q4 2014
Shares 322 Value ($000) $23 Avg Close — Range —
Q3 2014
Shares 880 Value ($000) $63 Avg Close — Range —
Q2 2014
Shares 2,213 Value ($000) $165 Avg Close — Range —