B |
2007-02-14 12:11:17.0 |
SEMCO ENERGY INC |
SEN |
WELLINGTON MANAGEMENT CO LLP |
9.56% |
view |
B |
2007-02-07 14:05:40.0 |
SEMCO ENERGY INC |
SEN |
DALTON GREINER HARTMAN MAHER & CO |
5.22% |
view |
B |
2006-02-14 00:00:00.0 |
SEMCO ENERGY INC |
SEN |
WELLINGTON MANAGEMENT CO LLP |
8.52% |
view |
B |
2005-01-26 00:00:00.0 |
SEMCO ENERGY INC |
SEN |
ARTISAN PARTNERS LTD PARTNERSHIP |
16.5% |
view |