ORION ENGINEERED CARBONS S A

Ticker: OEC CUSIP: L72967109 Class: Common Stock

ARDSLEY ADVISORY PARTNERS LP's Holding History (CIK: 0000900529)

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

Q1 2015

Shares 20,000 Value ($000) $360 Avg Close $17.01 Range $15.79 - $19.20

Q4 2014

Shares 20,000 Value ($000) $340 Avg Close $16.03 Range $12.60 - $18.09

Q3 2014

Shares 25,000 Value ($000) $441 Avg Close $17.44 Range $15.87 - $18.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	20,000	$360	$17.01	$15.79 - $19.20
Q4 2014	20,000	$340	$16.03	$12.60 - $18.09
Q3 2014	25,000	$441	$17.44	$15.87 - $18.40