UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. _) NORTHWESTERN CORP. -------------------------------------------------------------------------------- (NAME OF ISSUER) Common Stock (Par Value $0.01) -------------------------------------------------------------------------------- (TITLE OF CLASS OF SECURITIES) 668074305 -------------------------------------------------------------------------------- (CUSIP NUMBER) November 30,2014 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |x| Rule 13d-1(b) |_| Rule 13d-1(c) |_| Rule 13d-1(d) -------------------------------------------------------------------------------- 1. Names of Reporting Persons. Deutsche Bank AG* -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Federal Republic of Germany -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 5,037,635 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 5,083,825 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 5,083,825 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 11.02% -------------------------------------------------------------------------------- 12. Type of Reporting Person FI -------------------------------------------------------------------------------- * In accordance with Securities Exchange Act Release No. 39538 (January 12, 1998), this filing reflects the securities beneficially owned by the Asset and Wealth Management business group (collectively, "AWM") of Deutsche Bank AG and its subsidiaries and affiliates (collectively, "DBAG"). This filing does not reflect securities, if any, beneficially owned by any other business group of DBAG. Consistent with Rule 13d-4 under the Securities Exchange Act of 1934 "Act"), this filing shall not be construed as an admission that AWM is, for purposes of Section 13(d) under the Act, the beneficial owner of any securities covered by the filing. -------------------------------------------------------------------------------- 1. Names of Reporting Persons. Deutsche Investment Management Americas -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 2,232,573 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 2,232,573 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 2,232,573 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 4.86% -------------------------------------------------------------------------------- 12. Type of Reporting Person IA, CO -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 1. Names of Reporting Persons. Deutsche Bank Trust Company Americas -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 300 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 374 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 374 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 0.00% -------------------------------------------------------------------------------- 12. Type of Reporting Person BK, CO -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 1. Names of Reporting Persons. Deutsche Bank Securities, Inc. -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 0 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 30,406 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 30,406 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 0.04% -------------------------------------------------------------------------------- 12. Type of Reporting Person BD, CO -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 1. Names of Reporting Persons. DBX Advisors LLC -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 580 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 580 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 580 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 0.00% -------------------------------------------------------------------------------- 12. Type of Reporting Person IA, CO -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- 1. Names of Reporting Persons. Deutsche Asset & Wealth Management International GmbH -------------------------------------------------------------------------------- 2. Check the Appropriate Box If a Member of a Group (See Instructions) (a) |_| (b) |_| -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Federal Republic of Germany -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 2,804,182 ------------------------------------------------------------- 6. SHARED VOTING POWER NUMBER OF SHARES 0 BENEFICIALLY ------------------------------------------------------------- OWNED BY EACH 7. SOLE DISPOSITIVE POWER REPORTING PERSON WITH 2,819,892 ------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 2,819,892 -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) |_| -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 6.14% -------------------------------------------------------------------------------- 12. Type of Reporting Person IA, CO -------------------------------------------------------------------------------- Item 1. (a) Name of Issuer: NORTHWESTERN CORP. (b) Address of Issuer's Principal Executive Offices: 3010 West 69th Street Sioux Falls, SD 57108 United States Item 2. (a) Name of Person Filing: This statement is filed on behalf of Deutsche Bank AG ("Reporting Person"). (b) Address of the Principal Office or, if none, residence: Taunusanlage 12 60325 Frankfurt am Main Federal Republic of Germany (c) Citizenship: The citizenship of the Reporting Person is set forth on the cover page. (d) Title of Class of Securities: The title of the securities is common stock, $0.01 par value ("Common Stock"). (e) CUSIP Number: The CUSIP number of the Common Stock is set forth on the cover page. Item 3. If this statement is filed pursuant to SS.240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (a) |X| Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o). Deutsche Bank Securities, Inc. (b) |X| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c). Deutsche Bank Trust Company Americas (c) |_| Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). (d) |_| Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8). (e) |X| An investment adviser in accordance with S.240.13d-1(b)(1)(ii)(E); Deutsche Investment Management Americas Deutsche Asset & Wealth Management International GmbH DBX Advisors LLC (f) |_| An employee benefit plan or endowment fund in accordance with S.240.13d-1(b)(1)(ii)(F); (g) |_| A parent holding company or control person in accordance with S. 240.13d-1(b)(1)(ii)(G); (h) |_| A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i) |_| A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); (j) |X| A non-U.S. institution in accordance with Group, in accordance with Rule 13d-1 (b)(1)(ii)(J). (k) |_| Group, in accordance with S.240.13d-1(b)(1)(ii)(J). Item 4. Ownership. (a) Amount beneficially owned: The Reporting Person owns the amount of the Common Stock as set forth on the cover page. (b) Percent of class: The Reporting Person owns the percentage of the Common Stock as set forth on the cover page. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote The Reporting Person has the sole power to vote or direct the vote of the Common Stock as set forth on the cover page. (ii) Shared power to vote or to direct the vote The Reporting Person has the shared power to vote or direct the vote of the Common Stock as set forth on the cover page. (iii) Sole power to dispose or to direct the disposition of The Reporting Person has the sole power to dispose or direct the disposition of the Common Stock as set forth on the cover page (iv) Shared power to dispose or to direct the disposition The Reporting Person has the shared power to dispose or direct the disposition of the Common Stock as set forth on the cover page Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following |_|. Item 6. Ownership of More than Five Percent on Behalf of Another Person. Not applicable. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person. Subsidiary Item 3 Classification Deutsche Investment Management Americas Investment Advisor Deutsche Asset & Wealth Management International GmbH Investment Advisor DBX Advisors LLC Investment Advisor Deutsche Bank Trust Company Americas Bank Deutsche Bank Securities, Inc. Broker Dealer Item 8. Identification and Classification of Members of the Group Not applicable. Item 9. Notice of Dissolution of Group Not applicable. Item 10. Certification By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to a bank organized under the laws of the Federal Republic of Germany is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution. I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: December 9, 2014 Deutsche Bank AG By: /s/ Daniela Pondeva Name: Daniela Pondeva Title: Assistant Vice President