WESTERN GAS EQUITY PARTNERS

CUSIP: 95825R103 Class: CMN

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2018
Shares 1,373 Value ($000) $38 Avg Close — Range —
Q3 2018
Shares 2,000 Value ($000) $60 Avg Close — Range —