MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

Robeco Schweiz AG's Holding History (CIK: 0001418427)

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

Q2 2013
Shares 32,800 Value ($000) $857 Avg Close $6.58 Range $6.07 - $7.05