NATIONAL RESH CORP

Ticker: NRC CUSIP: 637372202 Class: Common Stock

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

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

Q4 2017

Shares 1,428 Value ($000) $53 Avg Close $35.50 Range $31.40 - $39.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	1,428	$53	$35.50	$31.40 - $39.00