ORBITAL ATK INC

CUSIP: 68557N103 Class: COM

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

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

Q1 2018
Shares 545 Value ($000) $72 Avg Close — Range —
Q4 2017
Shares 90,453 Value ($000) $11,895 Avg Close — Range —
Q3 2017
Shares 1,023,520 Value ($000) $136,292 Avg Close — Range —
Q2 2017
Shares 1,903,390 Value ($000) $187,217 Avg Close — Range —
Q1 2017
Shares 1,802,566 Value ($000) $176,651 Avg Close — Range —
Q4 2016
Shares 1,234,402 Value ($000) $108,294 Avg Close — Range —