NATIONAL GRID PLC

Ticker: NGG CUSIP: 636274409 Class: SPONSORED ADR NE

Summit Trail Advisors, LLC's Holding History (CIK: 0001698478)

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

Q1 2018
Shares 12,984 Value ($000) $477 Avg Close — Range —
Q4 2017
Shares 10,192 Value ($000) $596 Avg Close — Range —