X0202 SCHEDULE 13G/A 0000950103-22-002415 0001859853 XXXXXXXX LIVE 6 Class A ordinary shares, par value CHF 0.10 per share 06/30/2026 0001858985 On Holding AG H5919C104 FORRLIBUCKSTRASSE 190 8005 ZURICH V8 00000 Rule 13d-1(d) David Allemann b V8 0.00 43195565.00 2841108.00 32815418.00 43195565.00 N 12.9 IN Note to Rows 6 and 9: Consists of: (i)(a) 2,841,108 Class A ordinary shares owned by Mr. Allemann and (b) 10,316,250 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann (including 316,250 Class A ordinary shares issuable upon conversion of the Class B voting rights shares underlying options and option awards that have vested), (ii)(a) 5,163,184 Class A ordinary shares owned by Mr. Bernhard and (b) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii)(a) 2,375,855 Class A ordinary shares owned by Mr. Coppetti and (b) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Allemann has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. Note to Row 7: Consists of 2,841,108 Class A ordinary shares held of record by Mr. Allemann. Note to Row 8: Consists of: (i) 10,316,250 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann (including 316,250 Class A ordinary shares issuable upon conversion of the Class B voting rights shares underlying options and option awards that have vested), (ii) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. Each ten Class B voting rights shares are convertible into one Class A ordinary share upon approval at a general meeting of shareholders. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Allemann has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. 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. Allemann as set forth in Row 9 by (b) an aggregate of 334,530,953 Class A ordinary shares outstanding, consisting of (i) 301,715,535 Class A ordinary shares outstanding as of June 30, 2026, as reported by the Issuer to the Reporting Persons, and (ii) 32,815,418 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by the Reporting Persons (including 316,250 Class A ordinary shares issuable upon conversion of the Class B voting rights shares underlying options and option awards held by Mr. Allemann that have vested). The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Note to Rows 6, 7, 8, 9, and 11: Unless otherwise noted, information is presented as of June 30, 2026. Olivier Bernhard b V8 0.00 42879315.00 5163184.00 32499168.00 42879315.00 N 12.8 IN Note to Rows 6 and 9: Consists of: (i)(a) 2,841,108 Class A ordinary shares owned by Mr. Allemann and (b) 10,000,000 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann, (ii)(a) 5,163,184 Class A ordinary shares owned by Mr. Bernhard and (b) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii)(a) 2,375,855 Class A ordinary shares owned by Mr. Coppetti and (b) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Bernhard has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. Note to Row 7: Consists of 5,163,184 Class A ordinary shares held of record by Mr. Bernhard. Note to Row 8: Consists of: (i) 10,000,000 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann, (ii) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. Each ten Class B voting rights shares are convertible into one Class A ordinary share upon approval at a general meeting of shareholders. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Bernhard has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. 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. Bernhard as set forth in Row 9 by (b) an aggregate of 334,214,703 Class A ordinary shares outstanding, consisting of (i) 301,715,535 Class A ordinary shares outstanding as of June 30, 2026, as reported by the Issuer to the Reporting Persons, and (ii) 32,499,168 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by the Reporting Persons. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Note to Rows 6, 7, 8, 9, and 11: Unless otherwise noted, information is presented as of June 30, 2026. Caspar Coppetti b V8 0.00 42879315.00 2375855.00 32499168.00 42879315.00 N 12.8 IN Note to Rows 6 and 9: Consists of: (i)(a) 2,841,108 Class A ordinary shares owned by Mr. Allemann and (b) 10,000,000 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann, (ii)(a) 5,163,184 Class A ordinary shares owned by Mr. Bernhard and (b) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii)(a) 2,375,855 Class A ordinary shares owned by Mr. Coppetti and (b) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Coppetti has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. Note to Row 7: Consists of 2,375,855 Class A ordinary shares held of record by Mr. Coppetti. Note to Row 8: Consists of: (i) 10,000,000 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Allemann, (ii) 11,562,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Bernhard and (iii) 10,937,084 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by Mr. Coppetti. Each ten Class B voting rights shares are convertible into one Class A ordinary share upon approval at a general meeting of shareholders. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Pursuant to the Shareholders' Agreement, as defined in Item 2(a), Mr. Coppetti has shared voting and dispositive power with the other Reporting Persons identified herein over the Class B voting rights shares held by each of the Reporting Persons. 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. Coppetti as set forth in Row 9 by (b) an aggregate of 334,214,703 Class A ordinary shares outstanding, consisting of (i) 301,715,535 Class A ordinary shares outstanding as of June 30, 2026, as reported by the Issuer to the Reporting Persons, and (ii) 32,499,168 Class A ordinary shares issuable upon conversion of the Class B voting rights shares owned by the Reporting Persons. The aggregate number of Class A ordinary shares beneficially owned by the Reporting Persons as set forth herein are reported on the basis that each Reporting Person beneficially owns the Class A ordinary shares into which his Class B voting rights shares are convertible, and treating such Class B voting rights shares as converted into Class A ordinary shares solely for the purpose of reporting the beneficial ownership of the Reporting Person. Note to Rows 6, 7, 8, 9 and 11: Unless otherwise noted, information is presented as of June 30, 2026. On Holding AG Forrlibuckstrasse 190 8005 Zurich, Switzerland This Schedule 13G/A is being filed by David Allemann, Olivier Bernhard and Caspar Coppetti (each a "Reporting Person" and, collectively, the "Reporting Persons"). Pursuant to a Shareholders' Agreement, dated as of September 6, 2021 and amended as of March 23, 2026 (the "Shareholders' Agreement"), among the Reporting Persons and the Issuer, the Reporting Persons have agreed to certain arrangements with respect to their shares, including certain restrictions relating to the transfer of their Class B voting rights shares, to vote together on matters that will be put for a vote in the Issuer's shareholders' meetings and to vote to elect certain individuals to the Issuer's board of directors in accordance with the terms of the Shareholders' Agreement. By virtue of the Shareholders' Agreement and the obligations and rights thereunder, the Reporting Persons in this Schedule 13G/A may be deemed to constitute a "group" for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The Reporting Persons have entered into a Joint Filing Agreement, a copy of which is filed with this Schedule 13G/A as Exhibit A, pursuant to which the Reporting Persons have agreed to file this Schedule 13G/A jointly in accordance with the provisions of Rule 13d-1(k) of the Act. The Amendment No. 1 to the Shareholders' Agreement is filed as Exhibit 99.2 to this Schedule 13G/A. The principal office and business address of the Reporting Persons is c/o On Holding AG, Forrlibuckstrasse 190, 8005 Zurich, Switzerland. See row 4 of the cover pages to this Schedule 13G/A. Y See row 9 of the cover sheet of each Reporting Person. See row 11 of the cover sheet of each Reporting Person. % See row 5 of the cover sheet of each Reporting Person. See row 6 of the cover sheet of each Reporting Person. See row 7 of the cover sheet of each Reporting Person. See row 8 of the cover sheet of each Reporting Person. Y Y Y N The Reporting Persons have entered into a Joint Filing Agreement, a copy of which is filed with this Schedule 13G as Exhibit A, pursuant to which the Reporting Persons have agreed to file this Schedule 13G/A jointly in accordance with the provisions of Rule 13d-1(k) of the Act. Y Y 99.1 Joint Filing Agreement, dated as of February 11, 2022, among the Reporting Persons (incorporated by reference to Exhibit A to the Schedule 13G filed by the Reporting Persons with the U.S. Securities and Exchange Commission on February 11, 2022). 99.2 Amendment No. 1 to the Shareholders' Agreement by and among On Holding AG and the extended founder team of On Holding AG. David Allemann /s/ David Allemann 08/12/2026 Olivier Bernhard /s/ Olivier Bernhard 08/12/2026 Caspar Coppetti /s/ Caspar Coppetti 08/12/2026