On Holding AG (NYSE: ONON) discloses Martin Hoffmann’s 3.24M-share ownership position

Rhea-AI Filing Summary

On Holding AG reports that Martin Hoffmann beneficially owns 3,237,553 Class A ordinary shares of the company, with sole voting and dispositive power over all of these shares and no shared power. This position represents 1.0% of the company’s equity calculated on an as-converted basis for certain other share classes.

The ownership figure includes 2,722,749 Class A shares held directly by Hoffmann, which themselves include 514,804 Class A shares underlying vested options and option awards. The percentage interest is based on a total of 334,729,507 Class A shares outstanding or issuable as of June 30, 2026, including 32,499,168 Class A shares issuable upon conversion of Class B voting rights shares.

Key Figures

Beneficially owned shares: 3,237,553 Class A ordinary shares Ownership percentage: 1.0 % Directly owned Class A shares: 2,722,749 Class A ordinary shares +4 more

7 metrics

Beneficially owned shares 3,237,553 Class A ordinary shares Shares beneficially owned by Martin Hoffmann with sole voting and dispositive power

Ownership percentage 1.0 % Percentage of On Holding equity beneficially owned by Martin Hoffmann

Directly owned Class A shares 2,722,749 Class A ordinary shares Class A shares owned by Martin Hoffmann, including vested option-based shares

Vested option-based shares 514,804 Class A ordinary shares Class A shares underlying options and option awards that have vested

Aggregate share base 334,729,507 Class A ordinary shares Total Class A shares outstanding or issuable used to calculate ownership percentage

Outstanding Class A shares 302,230,339 Class A ordinary shares Class A shares outstanding as of June 30, 2026

Class A issuable from Class B 32,499,168 Class A ordinary shares Class A shares issuable upon conversion of Class B voting rights shares as of June 30, 2026

Key Terms

beneficially owned, sole voting power, sole dispositive power, Class B voting rights shares, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: See row 9 of the cover sheet."

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"Sole Voting Power 3,237,553.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole Dispositive Power 3,237,553.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Class B voting rights shares financial

"Class A ordinary shares issuable upon conversion of the Class B voting rights shares"

CUSIP Number financial

"CUSIP Number(s): H5919C104"

A CUSIP number is a nine-character code that uniquely identifies a specific U.S. or Canadian stock, bond, or other security, similar to a barcode or a social-security number for a financial instrument. It matters to investors because it removes confusion between similar securities, ensures trades and settlements are applied to the correct issue, and helps locate official documents and transaction records quickly.

FAQ

How many On Holding (ONON) shares does Martin Hoffmann beneficially own?

Martin Hoffmann beneficially owns 3,237,553 Class A ordinary shares of On Holding AG, with sole voting and dispositive power over all of these shares and no shared voting or dispositive authority reported.

What percentage of On Holding (ONON) does Martin Hoffmann’s stake represent?

Martin Hoffmann’s holdings represent 1.0% of On Holding AG’s equity. This percentage is based on 334,729,507 Class A shares outstanding or issuable as of June 30, 2026, including shares issuable from Class B conversions.

How many vested option-based shares does Martin Hoffmann hold in On Holding (ONON)?

Within his total stake, Martin Hoffmann holds 514,804 Class A shares underlying vested options and option awards. These vested awards are included in the 2,722,749 Class A shares directly owned by him and in his overall beneficial ownership.

What total share count is used to calculate Martin Hoffmann’s 1.0% ownership of On Holding (ONON)?

The 1.0% ownership figure uses an aggregate base of 334,729,507 Class A shares, including 302,230,339 Class A shares outstanding and 32,499,168 Class A shares issuable upon conversion of Class B voting rights shares as of June 30, 2026.

Does Martin Hoffmann share voting or dispositive power over On Holding (ONON) shares?

No. The filing states that Martin Hoffmann has sole voting power over 3,237,553 shares and sole dispositive power over 3,237,553 shares, with 0 shares reported as having shared voting or dispositive power.

Where is Martin Hoffmann, the reporting person for On Holding (ONON), based?

Martin Hoffmann’s principal business address is listed as c/o On Holding AG, Forrlibuckstrasse 190, 8005 Zurich, Switzerland. His citizenship is Germany, as indicated in the cover information of the ownership report.

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Available on EDGAR 08/12/2026 - 05:13 PM Accepted by SEC EDGAR 08/12/2026 - 05:12 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

On Holding AG

(Name of Issuer)

Class A ordinary shares, par value CHF 0.10 per share

(Title of Class of Securities)

H5919C104

(CUSIP Number)

06/30/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): H5919C104

1

Names of Reporting Persons

Martin Hoffmann

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

GERMANY

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,237,553.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,237,553.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,237,553.00

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)

1.0 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Note to Rows 5, 7 and 9: Consists of: (a) 2,722,749 Class A ordinary shares owned by Mr. Hoffmann (including 514,804 Class A ordinary shares underlying options and option awards that have vested). Note to Row 11: Represents the quotient obtained by dividing (a) the number of Class A ordinary shares and Class B voting rights shares beneficially owned by Mr. Hoffmann as set forth in Row 9 by (b) an aggregate of 334,729,507 Class A ordinary shares outstanding, consisting of (i) 302,230,339 Class A ordinary shares outstanding as of June 30, 2026, as reported by the Issuer to the Reporting Person (including 514,804 Class A ordinary shares underlying options and option awards held by Mr. Hoffmann that have vested), and (ii) 32,499,168 Class A ordinary shares issuable upon conversion of the Class B voting rights shares outstanding as of June 30, 2026. Note to Rows 6, 7, 8, 9 and 11: Unless otherwise noted, information is presented as of June 30, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: On Holding AG
(b)	Address of issuer's principal executive offices: Forrlibuckstrasse 190 8005 Zurich, Switzerland
Item 2.
(a)	Name of person filing: This Schedule 13G/A is being filed by Martin Hoffmann (the "Reporting Person").
(b)	Address or principal business office or, if none, residence: The principal office and business address of the Reporting Person is c/o On Holding AG, Forrlibuckstrasse 190, 8005 Zurich, Switzerland.
(c)	Citizenship: See row 4 of the cover page to this Schedule 13G/A.
(d)	Title of class of securities: Class A ordinary shares, par value CHF 0.10 per share
(e)	CUSIP Number(s): H5919C104
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: See row 9 of the cover sheet.
(b)	Percent of class: See row 11 of the cover sheet.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See row 5 of the cover sheet.
	(ii) Shared power to vote or to direct the vote: See row 6 of the cover sheet.
	(iii) Sole power to dispose or to direct the disposition of: See row 7 of the cover sheet.
	(iv) Shared power to dispose or to direct the disposition of: See row 8 of the cover sheet.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. If a group has filed this schedule pursuant to ss.240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to ss.240.13d-1(c) or ss.240.13d-1(d), attach an exhibit stating the identity of each member of the group.
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

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.

Martin Hoffmann

Signature:	/s/ Martin Hoffmann
Name/Title:	Martin Hoffmann
Date:	08/12/2026