MESA LABS INC

Ticker: MLAB CUSIP: 59064R109 Class: Common Stock

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

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

Q4 2017
Shares 504 Value ($000) $63 Avg Close $135.32 Range $118.50 - $157.82