MATERIAL SCIENCES CORP

CUSIP: 576674105 Class: COM

AVENIR CORP's Holding History (CIK: 0001033475)

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

Q4 2013
Shares 82,600 Value ($000) $976 Avg Close — Range —
Q3 2013
Shares 88,958 Value ($000) $834 Avg Close — Range —
Q2 2013
Shares 88,958 Value ($000) $895 Avg Close — Range —