Sec Form 13G Filing - Artisan Partners Limited Partnership filing for ARGENX SE SPONSORED ADS (ARGX) - 2022-02-04

Insider filing report for Changes in Beneficial Ownership

  • Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
  • Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
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                                 SCHEDULE 13G

                                (Rule 13d-102)

 Information to be Included in Statements Filed Pursuant to Rule 13d-1(b), (c)
         and (d) and Amendments Thereto Filed Pursuant to Rule 13d-2.

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                   Under the Securities Exchange Act of 1934
                              (Amendment No. _)*

                                   Argenx SE
--------------------------------------------------------------------------------
                               (Name of Issuer)

                                      ADS
--------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                   04016X101
                  ------------------------------------------
                                (CUSIP Number)

                                  12/31/2021
                  ------------------------------------------
            (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.  04016X101                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
     Artisan Partners Limited Partnership
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]
     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY
--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER
                    None
 NUMBER OF
   SHARES
BENEFICIALLY    ---------------------------
  OWNED BY      6  SHARED VOTING POWER
    EACH            2,714,431
 REPORTING      ---------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH            None
                ---------------------------
                8  SHARED DISPOSITIVE POWER
                    3,180,665
--------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     3,180,665
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]
     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
     6.2%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)
     IA



CUSIP No.  04016X101                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
     Artisan Investments GP LLC
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]
     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY
--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER
                    None
 NUMBER OF
   SHARES
BENEFICIALLY    ---------------------------
  OWNED BY      6  SHARED VOTING POWER
    EACH            2,714,431
 REPORTING      ---------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH            None
                ---------------------------
                8  SHARED DISPOSITIVE POWER
                    3,180,665
--------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     3,180,665
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]
     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
     6.2%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)
     HC



CUSIP No.  04016X101                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
     Artisan Partners Holdings LP
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]
     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY
--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER
                    None
 NUMBER OF
   SHARES
BENEFICIALLY    ---------------------------
  OWNED BY      6  SHARED VOTING POWER
    EACH            2,714,431
 REPORTING      ---------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH            None
                ---------------------------
                8  SHARED DISPOSITIVE POWER
                    3,180,665
--------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     3,180,665
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]
     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
     6.2%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)
     HC



CUSIP No.  04016X101                        13G

--------------------------------------------------------------------------------
 1  NAME OF REPORTING PERSON
     Artisan Partners Asset Management Inc.
--------------------------------------------------------------------------------
 2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
    (see Instructions)                                                   (a) [_]
                                                                         (b) [_]
     Not Applicable
--------------------------------------------------------------------------------
 3  SEC USE ONLY
--------------------------------------------------------------------------------
 4  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
--------------------------------------------------------------------------------
                5  SOLE VOTING POWER
                    None
 NUMBER OF
   SHARES
BENEFICIALLY    ---------------------------
  OWNED BY      6  SHARED VOTING POWER
    EACH            2,714,431
 REPORTING      ---------------------------
   PERSON       7  SOLE DISPOSITIVE POWER
    WITH            None
                ---------------------------
                8  SHARED DISPOSITIVE POWER
                    3,180,665
--------------------------------------------
 9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     3,180,665
--------------------------------------------------------------------------------
10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
    (see Instructions)                                                       [_]
     Not Applicable
--------------------------------------------------------------------------------
11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
     6.2%
--------------------------------------------------------------------------------
12  TYPE OF REPORTING PERSON
    (see Instructions)
     HC



Item 1(a)   Name of Issuer:

              Argenx SE

Item 1(b)   Address of Issuer's Principal Executive Offices:

              Willemstraat 5, 4811 AH, Breda, the Netherlands

Item 2(a)   Name of Person Filing:

              Artisan Partners Limited Partnership ("APLP")
              Artisan Investments GP LLC ("Artisan Investments")
              Artisan Partners Holdings LP ("Artisan Holdings")
              Artisan Partners Asset Management Inc. ("APAM")

Item 2(b)   Address of Principal Business Office:

              APLP, Artisan Investments, Artisan Holdings, and APAM are all
              located at:
              875 East Wisconsin Avenue, Suite 800
              Milwaukee, WI 53202

Item 2(c)   Citizenship:

              APLP is a Delaware limited partnership
              Artisan Investments is a Delaware limited liability company
              Artisan Holdings is a Delaware limited partnership
              APAM is a Delaware corporation

Item 2(d)   Title of Class of Securities:

              ADS

Item 2(e)   CUSIP Number:

              04016X101

Item 3      Type of Person:

              (e) APLP is an investment adviser registered under section 203 of
              the Investment Advisers Act of 1940.

              (g) Artisan Holdings is the sole limited partner of APLP and the
              sole member of Artisan Investments; Artisan Investments is the
              general partner of APLP; APAM is the general partner of Artisan
              Holdings.



Item 4      Ownership (at 12/31/2021):

              (a)  Amount owned "beneficially" within the meaning of rule 13d-3:

                   3,180,665

              (b)  Percent of class:

                   6.2% (based on 51,668,315 shares outstanding as of
                   12/31/2021)

              (c)  Number of shares as to which such person has:

                   (i)    sole power to vote or to direct the vote:

                          None

                   (ii)   shared power to vote or to direct the vote:

                          2,714,431

                   (iii)  sole power to dispose or to direct the disposition
                          of:

                          None

                   (iv)   shared power to dispose or to direct the disposition
                          of:

                          3,180,665

Item 5      Ownership of Five Percent or Less of a Class:

              Not Applicable

Item 6      Ownership of More than Five Percent on Behalf of Another Person:

              The shares reported herein have been acquired on behalf of
              discretionary clients of APLP. Persons other than APLP are
              entitled to receive all dividends from, and proceeds from the
              sale of, those shares. None of those persons, to the knowledge of
              APLP, Artisan Holdings, APAM, or Artisan Investments has an
              economic interest in more than 5% of the class.

Item 7      Identification and Classification of the Subsidiary Which Acquired
            the Security Being Reported on by the Parent Holding Company or
            Control Person:

              Not Applicable

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 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 of 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.



                                   Signature

   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.

Date: 2/4/2022

                                     ARTISAN PARTNERS ASSET MANAGEMENT
                                     INC,
                                     for itself and as the general
                                     partner of
                                     ARTISAN PARTNERS HOLDINGS LP

                                     By:   Gregory K. Ramirez *
                                           -------------------------------

                                     ARTISAN INVESTMENTS GP LLC,
                                     for itself and as the general
                                     partner of
                                     ARTISAN PARTNERS LIMITED PARTNERSHIP

                                     By:   Gregory K. Ramirez *
                                           -------------------------------

                                     *By:  /s/ Gregory K. Ramirez
                                           -------------------------------
                                           Gregory K. Ramirez
                                           Executive Vice President of
                                           Artisan Partners Asset
                                           Management Inc.
                                           Vice President of Artisan
                                           Investments GP LLC



                                 Exhibit Index

Exhibit 1    Joint Filing Agreement dated 2/4/2022 by and among Artisan
             Partners Limited Partnership, Artisan Investments GP LLC, Artisan
             Partners Holdings LP, and Artisan Partners Asset Management Inc.



                                                                      EXHIBIT 1

                            JOINT FILING AGREEMENT

   The undersigned hereby agree to the joint filing of the Schedule 13G to
which this Agreement is attached.

       Dated: 2/4/2022

                                     ARTISAN PARTNERS ASSET MANAGEMENT INC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNERS HOLDINGS LP

                                     By:     Gregory K. Ramirez *
                                             ---------------------------------

                                     ARTISAN INVESTMENTS GP LLC,
                                     for itself and as the general partner of
                                     ARTISAN PARTNER
S LIMITED PARTNERSHIP

                                     By:     Gregory K. Ramirez *
                                             ---------------------------------

                                     *By:    /s/ Gregory K. Ramirez
                                             ---------------------------------
                                             Gregory K. Ramirez
                                             Executive Vice President of
                                               Artisan Partners Asset
                                               Management Inc.
                                             Vice President of Artisan
                                               Investments GP LLC