ORBITAL ATK INC

CUSIP: 68557N103 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q1 2018
Shares 277,430 Value ($000) $36,790 Avg Close — Range —
Q4 2017
Shares 421,430 Value ($000) $55,418 Avg Close — Range —
Q3 2017
Shares 134,530 Value ($000) $17,914 Avg Close — Range —