ORBITAL SCIENCES CORP

CUSIP: 685564106 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2014
Shares 112,867 Value ($000) $3,035 Avg Close — Range —
Q3 2014
Shares 111,789 Value ($000) $3,108 Avg Close — Range —
Q2 2014
Shares 110,554 Value ($000) $3,267 Avg Close — Range —
Q1 2014
Shares 109,054 Value ($000) $3,043 Avg Close — Range —
Q4 2013
Shares 108,654 Value ($000) $2,532 Avg Close — Range —
Q3 2013
Shares 107,854 Value ($000) $2,284 Avg Close — Range —
Q2 2013
Shares 104,535 Value ($000) $1,816 Avg Close — Range —
Q1 2013
Shares 102,539 Value ($000) $1,711 Avg Close — Range —