NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

Twin Tree Management, LP's Holding History (CIK: 0001535588)

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

Q1 2016
Shares 1,928 Value ($000) $138 Avg Close — Range —
Q3 2015
Shares 2,599 Value ($000) $181 Avg Close — Range —
Q2 2015
Shares 3,560 Value ($000) $230 Avg Close — Range —