On Holding officer proposes $5.29M share sale

The notice lists six earlier sales of 4,150 Class A ordinary shares each, dated July 6 through August 10, 2026.

Rhea-AI Filing Summary

On Holding AG (symbol: ONON) is the issuer of record for a Form 144 filing submitted to the SEC. On Holding AG officer Martin Hoffmann reported a proposed sale of 175,000 Class A ordinary shares, with a stated aggregate market value of $5,285,000; Goldman Sachs & Co. LLC is identified as the broker. The notice says the reported sales are in connection with a selling plan dated June 4, 2026, intended to comply with Rule 10b5-1(c).

Key Figures

Proposed sale: 175,000 shares Aggregate market value: $5,285,000 Shares outstanding: 301,715,535 shares +1 more

4 metrics

Proposed sale 175,000 shares Class A ordinary shares; approximate sale date October 1, 2026

Aggregate market value $5,285,000 Proposed sale

Shares outstanding 301,715,535 shares Figure listed in the securities information

Past transaction size 4,150 shares Each listed transaction from July 6 through August 10, 2026

Key Terms

Rule 10b5-1(c), Rule 144, Class A Ordinary Shares

3 terms

Rule 10b5-1(c) regulatory

"intended to comply with Rule 10b5-1(c)"

Rule 10b5-1(c) is an SEC guideline that lets company insiders set up a written, pre-planned schedule to buy or sell their company stock when they are not in possession of material, nonpublic information. For investors, it matters because such plans can reduce the appearance of insider trading by separating decisions from inside knowledge—like putting your trades on autopilot—while also requiring scrutiny since pre-planned trades can still affect market confidence and share value.

Rule 144 regulatory

"definition of “person” in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Class A Ordinary Shares technical

"Class A Ordinary Shares"

Class A ordinary shares are a type of ownership stake in a company that typically grants voting rights to shareholders, allowing them to have a say in important company decisions. They often come with priority in receiving dividends or profits, making them attractive to investors seeking influence and potential income. These shares help distinguish different levels of ownership and rights within a company's stock structure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ONON shares did Martin Hoffmann propose to sell?

Martin Hoffmann reported a proposed sale of 175,000 Class A ordinary shares, with a stated aggregate market value of $5,285,000.

What recent ONON share sales does the notice list?

It lists sales of 4,150 shares each on July 6, 2026 ($152,860.40); July 13, 2026 ($158,464.24); July 20, 2026 ($155,162.15); July 27, 2026 ($154,855.57); August 3, 2026 ($157,289.44); and August 10, 2026 ($160,017.24).

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 05:47 PM Accepted by SEC EDGAR 10/01/2026 - 05:47 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001860218
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	On Holding AG
SEC File Number	001-40795
Address of Issuer	Forrlibuckstrasse 190 Zurich SWITZERLAND 8005
Phone	41-44-225-1555
Name of Person for Whose Account the Securities are To Be Sold	Martin Hoffman
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Ordinary Shares	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	175000	5285000	301715535	10/01/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Ordinary Shares	12/21/2017	Acquired from Issuer in private transaction	Issuer			175000	12/21/2017	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	07/06/2026	4150	152860.4
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	07/13/2026	4150	158464.24
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	07/20/2026	4150	155162.15
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	07/27/2026	4150	154855.57
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	08/03/2026	4150	157289.44
Martin Hoffmann Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	08/10/2026	4150	160017.24

144: Remarks and Signature

Remarks	The sales of shares set forth herein are made in connection with a selling plan dated 06/04/2026 that is intended to comply with Rule 10b5-1(c).
Date of Notice	10/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/04/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Goldman Sachs & Co. LLC on behalf of Martin Hoffmann
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)