MATERIAL SCIENCES CORP

CUSIP: 576674105 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2013
Shares 597,774 Value ($000) $7,060 Avg Close — Range —
Q3 2013
Shares 712,274 Value ($000) $6,681 Avg Close — Range —
Q2 2013
Shares 838,477 Value ($000) $8,435 Avg Close — Range —