UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
AMENDED FILING


NORTHROP GRUMMAN CORP
(NAME OF ISSUER)
COMMON STOCK
(TITLE OF CLASS OF SECURITIES)
666807102
(CUSIP NUMBER)
12/31/2018
(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)

*THE REMAINDER OF THIS COVER PAGE SHALL BE FILLED OUT FOR A
REPORTING PERSON`S INITIAL FILING ON THIS FORM WITH RESPECT TO THE
SUBJECT CLASS OF SECURITIES, AND FOR ANY SUBSEQUENT AMENDMENT
CONTAINING INFORMATION WHICH WOULD ALTER THE DISCLOSURES PROVIDED
IN A PRIOR COVER PAGE.

THE INFORMATION REQUIRED IN THE REMAINDER OF THIS COVER PAGE SHALL
NOT BE DEEMED TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE
SECURITIES EXCHANGE ACT OF 1934 ("ACT") OR OTHERWISE SUBJECT TO THE
LIABILITIES OF THAT SECTION OF THE ACT BUT SHALL BE SUBJECT TO ALL
OTHER PROVISIONS OF THE ACT (HOWEVER, SEE THE NOTES).












CUSIP NO: 666807102   13G         Page 2 of 9 Pages

1.  NAME OF REPORTING PERSON: STATE STREET CORPORATION
    I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON: 04-2456637

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

    NOT APPLICABLE

3.  SEC USE ONLY

4.  CITIZENSHIP OR PLACE OF ORGANIZATION

    BOSTON, MASSACHUSETTS

5.  SOLE VOTING POWER

    0 SHARES

6.  SHARED VOTING POWER

    17,171,242

7.  SOLE DISPOSITIVE POWER

    0 SHARES

8.  SHARED DISPOSITIVE POWER

    17,678,111

9.  AGGREGATED AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    17,679,908

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

    NOT APPLICABLE

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    10.2%

12. TYPE OF REPORTING PERSON

    HC


CUSIP NO: 666807102   13G         Page 3 of 9 Pages


1. NAME OF REPORTING PERSON:
     STATE STREET BANK & TRUST COMPANY
     I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON: 04-1867445

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

     NOT APPLICABLE

3.  SEC USE ONLY


4.  CITIZENSHIP OR PLACE OF ORGANIZATION

     MASSACHUSETTS

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.  SOLE VOTING POWER

     0 SHARES

6.  SHARED VOTING POWER

    11,130,319

7.  SOLE DISPOSITIVE POWER

     0

8.  SHARED DISPOSITIVE POWER

    602

9.  AGGREGATED AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    11,130,921*

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

      NOT APPLICABLE

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     6.41%

12. TYPE OF REPORTING PERSON

       BK



*602	     SHARES IN VARIOUS CAPACITIES
 11,130,319  SHARES AS TRUSTEE OF THE NORTHROP GRUMMAN SAVINGS
             PLAN AND FINANCIAL SECURITY AND SAVINGS PROGRAM


CUSIP NO: 666807102   13G         Page 4 of 9 Pages



1.  NAME OF REPORTING PERSON:
     STATE STREET GLOBAL ADVISORS TRUST COMPANY
     I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON: 81-4017137

2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

     NOT APPLICABLE

3.  SEC USE ONLY


4.  CITIZENSHIP OR PLACE OF ORGANIZATION

     MASSACHUSETTS

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.  SOLE VOTING POWER

     0 SHARES

6.  SHARED VOTING POWER

     3,825,900

7.  SOLE DISPOSITIVE POWER

     0

8.  SHARED DISPOSITIVE POWER

     15,279,936

9.  AGGREGATED AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     15,280,436*

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

      NOT APPLICABLE

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     8.8%

12. TYPE OF REPORTING PERSON

       IA


*3,825,900   SHARES IN VARIOUS CAPACITIES
 11,130,319  SHARES AS INVESTMENT MANAGER OF THE NORTHROP GRUMMAN SAVINGS PLAN
            AND FINANCIAL SECURITY AND SAVINGS PROGRAM














CUSIP NO: 666807102   13G         Page 5 of 9 Pages

ITEM 1.
    (A)  NAME OF ISSUER
        NORTHROP GRUMMAN CORP
    (B)  ADDRESS OF ISSUER`S PRINCIPAL EXECUTIVE OFFICES
	 2980 Fairview Park Drive, Falls Church, VA, 22042, United States

ITEM 2.
    (A)  NAME OF PERSON FILING
         STATE STREET CORPORATION AND ANY OTHER REPORTING PERSON
         IDENTIFIED ON THE SECOND PART OF THE COVER PAGES HERETO

    (B)  ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IN NONE,
         RESIDENCE
         STATE STREET FINANCIAL CENTER
         ONE LINCOLN STREET
         BOSTON, MA 02111
        (FOR ALL REPORTING PERSONS)

    (C)  CITIZENSHIP: SEE ITEM 4 (CITIZENSHIP OR PLACE OF
         ORGANIZATION) OF COVER PAGES

   (D)  TITLE OF CLASS OF SECURITIES
         COMMON STOCK

  (E)  CUSIP NUMBER:
          87612E106
ITEM 3.
         IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B), OR 13D-2(B)
         OR (C), CHECK WHETHER THE PERSON FILING IS A:
         SEE ITEM 12(TYPE OF REPORTING PERSON) OF THE COVER PAGE
         FOR EACH REPORTING PERSON AND THE TABLE BELOW, WHICH EXPLAINS
         THE MEANING OF THE TWO LETTER SYMBOLS APPEARING IN ITEM 12 OF
         THE COVER PAGES.
         SYMBOL    CATEGORY
          BK          BANK AS DEFINED IN SECTION 3(A) (6) OF THE ACT.
          IC           INSURANCE COMPANY AS DEFINED IN SECTION 3 (A) (19)
                       OF THE ACT (15 U.S.C. 78c).
          IC           INVESTMENT COMPANY REGISTERED UNDER SECTION 8 OF
                       THE INVESTMENT COMPANY ACT OF 1940 (15 U.S.C 80a-8).
          IA           AN INVESTMENT ADVISOR IN ACCORDANCE WITH RULE
                       13D-1(B) (1) (II) (E).
          EP           AN EMPLOYEE BENEFIT PLAN OR ENDOWMENT FUND IN
                       ACCORDANCE WITH RULE 13D-1(B) (1) (II) (F) .
          HC           A PARENT HOLDING COMPANY OR CONTROL PERSON IN
                       ACCORDANCE WITH RULE 13D-1(B)(1)(II) (G).
          SA           A SAVINGS ASSOCIATIONS AS DEFINED IN SECTION 3(B)
                       OF THE FEDERAL DEPOSIT INSURANCE ACT (12 U.S.C. 1813).
          CP           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 (15U.S.C. 80A-3).



CUSIP NO: 666807102   13G         Page 6 of 9 Pages

ITEM 4.   OWNERSHIP
          THE INFORMATION SET FORTH IN ROWS 5 THROUGH 11 OF THE COVER PAGE
          HERETO FOR EACH OF THE REPORTING PERSONS IS INCORPORATED
          HEREIN BY REFERENCE.

ITEM 5.   OWNERSHIP OF FIVE PERCENT OR LESS OF CLASS
          NOT APPLICABLE

ITEM 6.   OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
ALL OF THE SECURITIES ARE BENEFICIALLY OWNED BY STATE STREET CORPORATION
AND ITS DIRECT OR INDIRECT SUBSIDIARIES IN THEIR VARIOUS FIDUCIARY AND OTHER
CAPACITIES. AS A RESULT, ANOTHER ENTITY IN EVERY INSTANCE IS ENTITLED TO
DIVIDENDS OR PROCEEDS OF SALE. STATE STREET BANK AND TRUST COMPANY IS
THE TRUSTEE FOR AND STATESTREET GLOBAL ADVISORS TRUST COMPANY IS THE
INVESTMENT MANAGER FOR THE NORTHROP GRUMMAN CORP. COMMON STOCK IN THE
NORTHROP GRUMMAN SAVINGS PLAN AND THE NORTHROP GRUMMAN FINANCIAL SECURITY
AND SAVINGS PROGRAM WHICH BENEFICIALLY OWN 6.56% OF COMMON STOCK OF
NORTHROP GRUMMAN. IN THESE CAPACITIES, STATE STREET BANK AND TRUST COMPANY
HAS VOTINGPOWER AND STATE STREET GLOBAL ADVISORS TRUST COMPANY HAS
DISPOSITIVE POWER OVER THE SHARES IN CERTAIN CIRCUMSTANCES.


ITEM 7.   IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH
          ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING
          COMPANY OR CONTROL PERSON
          SEE EXHIBIT 1 ATTACHED HERETO

ITEM 8.   IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
          NOT APPLICABLE

ITEM 9.   NOTICE OF DISSOLUTION OF GROUP
          NOT APPLICABLE

















CUSIP NO: 666807102   13G         Page 7 of 9 Pages

ITEM 10.  CERTIFICATION

          BY SIGNING BELOW I CERTIFY THAT, TO THE BEST OF MY KNOWLEDGE
AND BELIEF, THE SECURITIES REFERRED TO ABOVE WERE ACQUIRED AND ARE
HELD IN THE ORDINARY COURSE OF BUSINESS AND WERE NOT ACQUIRED AND ARE
NOT HELD FOR THE PURPOSE OR WITH THE EFFECT OF CHANGING OR INFLUENCING
THE CONTROL OF THE ISSUER OF THE SECURITIES AND WERE NOT ACQUIRED AND
ARE NOT HELD IN CONNECTION WITH OR AS A PARTICIPANT IN ANY TRANSACTION
HAVING THAT PURPOSE OR EFFECT.

SIGNATURES

	   AFTER REASONABLE INQUIRY AND TO THE BEST OF HIS KNOWLEDGE AND
BELIEF, EACH OF THE UNDERSIGNED CERTIFIES THAT THE INFORMATION SET FORTH
IN THIS STATEMENT IS TRUE, COMPLETE AND CORRECT.

FEBRUARY 11, 2019
STATE STREET CORPORATION
STATE STREET BANK & TRUST COMPANY



/S/ IAN W APPLEYARD
GLOBAL CONTROLLER AND CHIEF ACCOUNTING OFFICER



FEBRUARY 8, 2019
STATE STREET GLOBAL ADVISORS TRUST COMPANY



/S/ CHRISTOPHER MICAH BAKER
MANAGING DIRECTOR



CUSIP NO: 666807102   13G         Page 8 of 9 Pages


EXHIBIT 1



   THE FOLLOWING TABLE LISTS THE IDENTITY AND ITEM 3 CLASSIFICATION
OF EACH SUBSIDIARY OF STATE STREET CORPORATION, THE PARENT HOLDING
COMPANY, THAT BENEFICIALLY OWNS THE ISSUER`S SECURITIES. PLEASE
REFER TO ITEM 3 OF THE ATTACHED SCHEDULE 13G FOR A DESCRIPTION OF
EACH OF THE TWO-LETTER SYMBOLS REPRESENTING THE ITEM 3 CLASSIFICATION
BELOW.

SUBSIDIARY							ITEM 3 CLASSIFICATION
STATE STREET BANK AND TRUST                                         BK
SSGA FUNDS MANAGEMENT, INC.					 IA
STATE STREET GLOBAL ADVISORS LIMITED (UK)                          IA
STATE STREET GLOBAL ADVISORS LTD (CANADA)                         IA
STATE STREET GLOBAL ADVISORS, AUSTRALIA LIMITED                   IA
STATE STREET GLOBAL ADVISORS (JAPAN) CO., LTD			 IA
STATE STREET GLOBAL ADVISORS ASIA LTD				 IA
STATE STREET GLOBAL ADVISORS SINGAPORE LTD  	                 IA
STATE STREET GLOBAL ADVISORS GmbH                                  IA
STATE STREET GLOBAL ADVISORS IRELAND LIMITED			 IA
STATE STREET GLOBAL ADVISORS TRUST COMPANY			 IA


NOTE: ALL OF THE LEGAL ENTITIES ABOVE ARE DIRECT OR INDIRECT SUBSIDIARIES
OF STATE STREET CORPORATION.

CUSIP NO: 666807102   13G         Page 9 of 9 Pages


                             JOINT FILING AGREEMENT



IN ACCORDANCE WITH RULE 13D-1(K)(1) UNDER THE SECURITIES EXCHANGE ACT
OF 1934, AS AMENDED (THE EXCHANGE ACT), EACH UNDERSIGNED ENTITY (EACH A
COMPANY) HEREBY AGREES TO ANY AND ALL JOINT FILINGS REQUIRED TO BE MADE
ON THE COMPANY`S BEHALF ON SCHEDULE 13G (INCLUDING AMENDMENTS THERETO)
UNDER THE EXCHANGE ACT, WITH RESPECT TO SECURITIES WHICH MAY BE DEEMED
TO BE BENEFICIALLY OWNED BY THE COMPANY UNDER THE EXCHANGE ACT, AND
THAT THIS AGREEMENT BE INCLUDED AS AN EXHIBIT TO ANY SUCH JOINT FILING.
THIS AGREEMENT MAY BE EXECUTED IN ANY NUMBER OF COUNTERPARTS ALL OF
WHICH TAKEN TOGETHER SHALL CONSTITUTE ONE AND THE SAME INSTRUMENT.

IN WITNESS WHEREOF, EACH COMPANY HEREBY EXECUTES THIS AGREEMENT
EFFECTIVE AS OF THE DATE SET FORTH BELOW.


FEBRUARY 11, 2019
STATE STREET CORPORATION
STATE STREET BANK & TRUST COMPANY





/S/ IAN W APPLEYARD
GLOBAL CONTROLLER AND CHIEF ACCOUNTING OFFICER




FEBRUARY 8, 2019
STATE STREET GLOBAL ADVISORS TRUST COMPANY



/S/ CHRISTOPHER MICAH BAKER
MANAGING DIRECTOR






Information Classification: General


Information Classification: General