MARINUS PHARMACEUTICALS INC

CUSIP: 56854Q101 Class: COM

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q1 2016
Shares 55,400 Value ($000) $298,000 Avg Close — Range —
Q4 2015
Shares 32,500 Value ($000) $248,000 Avg Close — Range —
Q4 2014
Shares 49,700 Value ($000) $524,000 Avg Close — Range —