Insider proposes sale of Class A shares

ONON: A selling notice under Section 144 lists proposed and recent sales of Class A Ordinary Shares by Marc Maurer.

Rhea-AI Filing Summary

ONON: A selling notice under Section 144 lists proposed and recent sales of Class A Ordinary Shares by Marc Maurer. The filing lists multiple dispositions dated between 03/09/2026 and 05/29/2026, including large blocks of 399,620 shares on 05/15/2026 and 119,978 shares on 05/29/2026.

The entry shows a series of transactions and remaining share totals after each sale for the reporting person; the document is a regulatory notice of proposed sales rather than a company financial report.

Insights

Equity Capital Markets Analyst

Multiple sizable dispositions by a holder reported; filing documents proposed/responsive sales activity.

The filing lists discrete sales of Class A Ordinary Shares by Marc Maurer with per-transaction share counts and resulting post-sale holdings displayed. Two large blocks are shown: 05/15/2026 for 399,620 shares and 05/29/2026 for 119,978 shares.

Cash-flow treatment and use of proceeds are not stated. Subsequent filings or transaction confirmations would show actual market execution and any effect on outstanding float.

Securities Compliance Specialist

This is a Form 144 regulatory notice documenting proposed sales; it does not itself execute transfers.

Form 144 provides attestation required for certain brokered or registered sales under Rule 144. The record captures dates of acquisition and multiple sale entries, including acquisition date 12/21/2017 for a 100,000-share lot listed as acquired from the issuer in a private transaction.

Timing and settlement details are not included; review of broker confirmations or a Form 4/Form 5 (if applicable) would confirm completed dispositions.

Key Figures

Reported sale on 05/15/2026: 399,620 shares Reported sale on 05/29/2026: 119,978 shares Reported sale on 04/08/2026 (example): 27,841 shares +2 more

5 metrics

Reported sale on 05/15/2026 399,620 shares Disposition by Marc Maurer listed in the filing

Reported sale on 05/29/2026 119,978 shares Disposition by Marc Maurer listed in the filing

Reported sale on 04/08/2026 (example) 27,841 shares One of multiple April dispositions recorded

Acquisition date and lot 100,000 shares Acquired from issuer in private transaction on <date>12/21/2017</date>

Reported sale on 05/15/2026 (post-sale holding) 14,889,841 Post-transaction holding figure shown after the 399,620-share disposition

Key Terms

Form 144, Class A Ordinary Shares, Acquired from issuer in private transaction

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Class A Ordinary Shares market

"Class A Ordinary Shares | Goldman Sachs & Co. LLC"

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.

Acquired from issuer in private transaction regulatory

"12/21/2017 | Acquired from issuer in private transaction"

FAQ

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

What does the Form 144 for ONON show about Marc Maurer's sales?

The Form 144 lists proposed and recent dispositions by Marc Maurer, including multiple dated transactions between 03/09/2026 and 05/29/2026. The filing records specific per-sale share counts and post-transaction holdings for each entry.

How many shares did Marc Maurer sell on 05/15/2026 and 05/29/2026?

The filing shows a sale of 399,620 shares on 05/15/2026 and 119,978 shares on 05/29/2026. Each line also displays the resulting reported holding after that disposition.

Does Form 144 confirm trades were executed on the dates listed for ONON?

Form 144 is a notice of proposed sale and records dates of intended or reported transactions; it does not itself serve as a broker confirmation. Execution and settlement details must be verified by trade confirmations or subsequent filings.

What acquisition information is included in the ONON filing?

The filing lists an acquisition of 100,000 Class A Ordinary Shares on 12/21/2017, described as "Acquired from issuer in private transaction." That acquisition date and descriptor are shown verbatim in the notice.

Will the company receive proceeds from these Form 144-listed sales?

The filing lists sales by an individual holder; it does not state proceeds recipients. Form 144 typically documents resales by holders, so the issuer is not identified as receiving proceeds in these entries.

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

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Accepted by SEC EDGAR 06/09/2026 - 06:00 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	0001859787
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	Marc Maurer
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	100000	3825000	299205569	06/09/2026	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			100000	12/21/2017	None

* 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
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	04/08/2026	27841	962018
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	04/08/2026	24919	861759
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	04/08/2026	55836	1930379
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	04/08/2026	56662	1959066
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	03/09/2026	6250	250045
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	03/16/2026	6250	243207
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	03/23/2026	6250	248700
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	03/30/2026	6250	201948
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	04/06/2026	6250	209911
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	05/15/2026	399620	14889841
Marc Maurer Forrlibuckstrasse 190 Zurich V8 8005	Class A Ordinary Shares	05/29/2026	119978	4897502

144: Remarks and Signature

Remarks	In accordance with the procedures described in the Securities and Exchange Commission's interpretive letter to Goldman, Sachs & Co., dated December 20, 1999 and the Commission's interpretive letter to Bank of America N.A., Merrill Lynch, Pierce, Fenner & Smith Inc., dated December 1, 2011, the shares noticed in this Form 144 are subject to a contract (the "Contract") in respect of a contingent forward sale transaction between the Filer and Goldman Sachs Bank AG ("GS Bank"), an affiliate of Goldman Sachs & Co. LLC, covering up to a maximum of 100,000 shares in the aggregate which have been pledged to GS Bank. The actual number of shares sold under the Contract will be based on the formula agreed to by the parties over an observation period of up to 12 months. Any initial hedging activity in connection with the contingent forward sale transaction will be conducted by the broker named in this Form 144.
Date of Notice	06/09/2026
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 Marc Maurer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)