[SCHEDULE 13G/A] argenx SE American SEC Filing

Rhea-AI Filing Summary

Artisan Partners and affiliated entities report beneficial ownership of 2,349,776 American Depositary Shares of Argenx, representing 3.8% of the 61,166,252 ADS outstanding. The filing shows no sole voting or dispositive power; instead the filers report shared voting power of 2,010,189 ADS and shared dispositive power of 2,349,776. The reporting persons are Artisan Partners Asset Management Inc., Artisan Partners Holdings LP, Artisan Investments GP LLC and Artisan Partners Limited Partnership, all organized in Delaware with a principal business address in Milwaukee, WI.

The statement is made on Schedule 13G and includes a joint filing agreement among the reporting persons, and it certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Insights

Financial Analyst

3.8% position disclosed; shared voting power but no sole control—non-controlling stake.

The filing quantifies the economic and voting exposure precisely: 2,349,776 ADS owned equals 3.8% of the 61,166,252 ADS base. Voting authority is reported as shared for 2,010,189 ADS with no sole voting or dispositive power. From a portfolio-impact perspective, this is a measurable passive stake below 5% and therefore unlikely to trigger material governance influence based solely on the numbers disclosed.

Corporate Governance Expert

Joint filing shows coordinated reporting; certification asserts ordinary-course holdings, not an attempt to exert control.

The submission identifies four related Artisan entities and references a joint filing agreement, indicating coordinated disclosure rather than a single controlling holder. The certifying language states the shares are held in the ordinary course of business and not to influence issuer control. The combination of shared voting power of 2,010,189 and absence of sole powers supports a governance profile of shared, passive influence rather than control.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

ARGENX SE

(Name of Issuer)

American Depositary Shares

(Title of Class of Securities)

04016X101

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 04016X101

1

Names of Reporting Persons

Artisan Partners Asset Management 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

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,010,189.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,349,776.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,349,776.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.8 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: (g) Artisan Partners Holdings LP is the sole limited partner of Artisan Partners Limited Partnership and the sole member of Artisan Investments GP LLC; Artisan Investments GP LLC is the general partner of Artisan Partners Limited Partnership; Artisan Partners Asset Management Inc. is the general partner of Artisan Partners Holdings LP.

SCHEDULE 13G

CUSIP No. 04016X101

1

Names of Reporting Persons

Artisan Partners Holdings LP

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

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,010,189.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,349,776.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,349,776.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.8 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: (g) Artisan Partners Holdings LP is the sole limited partner of Artisan Partners Limited Partnership and the sole member of Artisan Investments GP LLC; Artisan Investments GP LLC is the general partner of Artisan Partners Limited Partnership; Artisan Partners Asset Management Inc. is the general partner of Artisan Partners Holdings LP.

SCHEDULE 13G

CUSIP No. 04016X101

1

Names of Reporting Persons

Artisan Investments GP 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

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,010,189.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,349,776.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,349,776.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.8 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: (g) Artisan Partners Holdings LP is the sole limited partner of Artisan Partners Limited Partnership and the sole member of Artisan Investments GP LLC; Artisan Investments GP LLC is the general partner of Artisan Partners Limited Partnership; Artisan Partners Asset Management Inc. is the general partner of Artisan Partners Holdings LP.

SCHEDULE 13G

CUSIP No. 04016X101

1

Names of Reporting Persons

Artisan Partners Limited Partnership

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

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,010,189.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,349,776.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,349,776.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.8 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: (e) Artisan Partners Limited Partnership is an investment adviser registered under section 203 of the Investment Advisers Act of 1940. (g) Artisan Partners Holdings LP is the sole limited partner of Artisan Partners Limited Partnership and the sole member of Artisan Investments GP LLC; Artisan Investments GP LLC is the general partner of Artisan Partners Limited Partnership; Artisan Partners Asset Management Inc. is the general partner of Artisan Partners Holdings LP.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ARGENX SE
(b)	Address of issuer's principal executive offices: Industriepark Zwijnaarde 7, Building C, 9052 Zwijnaarde (Ghent) Belgium
Item 2.
(a)	Name of person filing: Artisan Partners Asset Management Inc. ("APAM") Artisan Partners Holdings LP ("Artisan Holdings") Artisan Investments GP LLC ("Artisan Investments") Artisan Partners Limited Partnership ("APLP")
(b)	Address or principal business office or, if none, residence: APAM, Artisan Holdings, Artisan Investments, and APLP are all located at: 875 East Wisconsin Avenue, Suite 800 Milwaukee, WI 53202
(c)	Citizenship: APAM is a Delaware corporation; Artisan Holdings is a Delaware limited partnership; Artisan Investments is a Delaware limited liability company; APLP is a Delaware limited partnership
(d)	Title of class of securities: American Depositary Shares
(e)	CUSIP No.: 04016X101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(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)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 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)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2,349,776
(b)	Percent of class: 3.8% (based on 61,166,252 shares outstanding as of 06/30/2025)
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: None
	(ii) Shared power to vote or to direct the vote: 2,010,189
	(iii) Sole power to dispose or to direct the disposition of: None
	(iv) Shared power to dispose or to direct the disposition of: 2,349,776
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 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.
	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.

Certifications:

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, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

Artisan Partners Asset Management Inc.

Signature:	/s/ Gregory K. Ramirez
Name/Title:	Gregory K. Ramirez, Executive Vice President of Artisan Partners Asset Management Inc.
Date:	08/12/2025

Artisan Partners Holdings LP

Signature:	/s/ Gregory K. Ramirez
Name/Title:	Gregory K. Ramirez, Executive Vice President of Artisan Partners Asset Management Inc., as the general partner of Artisan Partners Holdings LP
Date:	08/12/2025

Artisan Investments GP LLC

Signature:	/s/ Gregory K. Ramirez
Name/Title:	Gregory K. Ramirez, Vice President of Artisan Investments GP LLC
Date:	08/12/2025

Artisan Partners Limited Partnership

Signature:	/s/ Gregory K. Ramirez
Name/Title:	Gregory K. Ramirez, Vice President of Artisan Investments GP LLC, as the general partner of Artisan Partners Limited Partnership
Date:	08/12/2025

Comments accompanying signature: Exhibit Index Exhibit 1 - Joint Filing Agreement dated 08/12/2025 by and among Artisan Partners Asset Management Inc., Artisan Partners Holdings LP, Artisan Investments GP LLC, and Artisan Partners Limited Partnership.

FAQ

What stake does Artisan Partners report in ARGX?

Artisan Partners and affiliates report beneficial ownership of 2,349,776 ADS, representing 3.8% of the class based on 61,166,252 ADS outstanding.

How much voting power does Artisan report for ARGX?

The filers report no sole voting power and shared voting power of 2,010,189 ADS.

Does Artisan Partners have sole dispositive power over these ARGX shares?

No. The filing shows no sole dispositive power and shared dispositive power of 2,349,776 ADS.

Which entities filed the Schedule 13G/A for ARGX?

The filing names Artisan Partners Asset Management Inc., Artisan Partners Holdings LP, Artisan Investments GP LLC and Artisan Partners Limited Partnership.

Is this holding reported as more than 5% of ARGX?

No. Item 5 indicates this is ownership of 5 percent or less of the class; the disclosed percentage is 3.8%.