NorthWestern (NWE) - 2019 Q1 - Quarterly Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (mark one) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-10499 NORTHWESTERN CORPORATION (Exact name of registrant as specified in its charter) | Delaware | 46-0172280 | | --- | --- | | ( ...