NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2017
Shares 4,466 Value ($000) $262 Avg Close $39.52 Range $38.19 - $41.05
Q4 2016
Shares 10,221 Value ($000) $581 Avg Close $38.33 Range $36.64 - $40.23