ORBITAL ATK INC

CUSIP: 68557N103 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q1 2018
Shares 774,516 Value ($000) $102,709 Avg Close — Range —
Q4 2017
Shares 810,673 Value ($000) $106,603 Avg Close — Range —
Q3 2017
Shares 835,363 Value ($000) $111,237 Avg Close — Range —
Q2 2017
Shares 830,162 Value ($000) $81,655 Avg Close — Range —
Q1 2017
Shares 767,739 Value ($000) $75,238 Avg Close — Range —
Q4 2016
Shares 725,301 Value ($000) $63,631 Avg Close — Range —
Q3 2016
Shares 718,272 Value ($000) $54,754 Avg Close — Range —
Q2 2016
Shares 926,300 Value ($000) $78,865 Avg Close — Range —
Q1 2016
Shares 1,104,074 Value ($000) $95,988 Avg Close — Range —
Q4 2015
Shares 1,187,634 Value ($000) $106,103 Avg Close — Range —
Q3 2015
Shares 1,304,995 Value ($000) $93,790 Avg Close — Range —
Q2 2015
Shares 1,418,809 Value ($000) $104,084 Avg Close — Range —
Q1 2015
Shares 1,269,951 Value ($000) $97,316 Avg Close — Range —