[SCHEDULE 13G] AUNA S.A. SEC Filing

Rhea-AI Filing Summary

Fiera Capital (UK) Limited, an investment adviser based in London, reported beneficial ownership of 1,440,174 Class A Ordinary Shares of AUNA S.A., identified by CUSIP L0415A103. This position represents 4.8% of the Class A shares, putting its holdings below the 5% threshold that often signals a more significant stake.

The filing states that Fiera Capital (UK) Limited holds these shares as investment manager for various funds and that, as of the close of business on December 5, 2025, it owned less than 5% of AUNA S.A.’s Class A shares. The firm certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of AUNA S.A.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

AUNA S.A.

(Name of Issuer)

Class A Ordinary Schares

(Title of Class of Securities)

L0415A103

(CUSIP Number)

12/08/2025

(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. L0415A103

1

Names of Reporting Persons

Fiera Capital (UK) Ltd

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

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,440,174.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,440,174.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,440,174.00

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)

4.8 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: AUNA S.A.
(b)	Address of issuer's principal executive offices: 6, RUE JEAN MONNET, GRAND DUCHY OF LUXEMBOURG, LUXEMBOURG, L-2180
Item 2.
(a)	Name of person filing: Fiera Capital (UK) Limited as investment manager for various funds.
(b)	Address or principal business office or, if none, residence: Queensberry House, 3 Old Burlington Street, London, W1S 3AE
(c)	Citizenship: United Kingdom
(d)	Title of class of securities: Class A Ordinary Schares
(e)	CUSIP No.: L0415A103
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: As of close of business on December 5, 2025, Fiera Capital (UK) Limited on behalf of several funds owned less than 5% of the Issuer's Class A Shares.
(b)	Percent of class: Less than 5%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Less than 5%
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: Less than 5%
	(iv) Shared power to dispose or to direct the disposition of: 0
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.

Fiera Capital (UK) Ltd

Signature:	Jeannot Huijnen
Name/Title:	Deputy Head of Compliance
Date:	12/08/2025

FAQ

What percentage of AUNA (AUNA) Class A shares does Fiera Capital (UK) Limited own?

Fiera Capital (UK) Limited reports beneficial ownership of 4.8% of AUNA S.A.’s Class A Ordinary Shares.

How many AUNA (AUNA) shares are beneficially owned by Fiera Capital (UK) Limited?

Fiera Capital (UK) Limited beneficially owns 1,440,174 Class A Ordinary Shares of AUNA S.A.

As of what date is Fiera Capital (UK) Limited’s ownership in AUNA (AUNA) reported?

The ownership information is reported as of the close of business on December 5, 2025, with the event date noted as December 8, 2025.

In what capacity does Fiera Capital (UK) Limited hold AUNA (AUNA) shares?

Fiera Capital (UK) Limited holds AUNA S.A. shares as an investment manager for various funds.

Is Fiera Capital (UK) Limited seeking to influence control of AUNA (AUNA)?

The filing certifies that the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing the control of AUNA S.A.

What type of reporting person is Fiera Capital (UK) Limited in this AUNA (AUNA) Schedule 13G?

Fiera Capital (UK) Limited is classified as an investment adviser (IA) for purposes of this Schedule 13G.

Where is Fiera Capital (UK) Limited located and what is AUNA (AUNA)’s principal office address?

Fiera Capital (UK) Limited’s business office is at Queensberry House, 3 Old Burlington Street, London, W1S 3AE, and AUNA S.A.’s principal executive offices are at 6, Rue Jean Monnet, L-2180, Luxembourg.