On Holding director has 633 shares withheld for taxes

The withholding arose from tax obligations on restricted stock units granted September 21, 2026, rather than a discretionary trade.

Rhea-AI Filing Summary

On Holding AG (symbol: ONON) is the issuer of record for a Form 4 filing submitted to the SEC. On Holding AG director Helena Helmersson had 633 Class A shares withheld on September 24, 2026, at $30.16 per share, leaving her with 6,189 directly held shares. The withholding was at her election to satisfy tax obligations tied to the release of shares underlying restricted stock units granted September 21, 2026; the transaction was not a discretionary trade.

Insider Trade Summary

Tax Withholding: 633 shares

Tax Withholding 1 txn

Insider Helmersson Helena

Role Director

Type	Security	Shares	Price	Value
Tax Withholding	Class A Shares F1	633	$30.16	$19K

Holdings After Transaction: Class A Shares — 6,189 shares (Direct)

Footnotes (1)

1. F1. The shares are withheld at the election of the reporting person to satisfy tax withholding obligations in connection with the release of shares underlying restricted stock units granted on September 21, 2026, as reported on the Reporting Person's Form 4 filed on September 23, 2026. The transaction does not represent a discretionary trade by the Reporting Person.

Key Figures

Shares withheld: 633 shares Price per share: $30.16 per share Direct holdings after transaction: 6,189 shares

3 metrics

Shares withheld 633 shares Class A shares withheld on September 24, 2026, for tax obligations

Price per share $30.16 per share Reported for the September 24, 2026, withholding

Direct holdings after transaction 6,189 shares Helena Helmersson's reported position following the transaction

Key Terms

Class A Shares, restricted stock units, tax withholding obligations

3 terms

Class A Shares financial

"633.0000 Class A Shares"

Class A shares are one of a company’s distinct types of stock that come with a specific set of rights—commonly different voting power, dividend treatment, or transfer rules—defined in the company’s charter. Investors care because those rights affect control, income and resale value; like holding a seat at a table that has different rules or stronger chips than other seats, owning Class A changes how much influence and return you can expect.

restricted stock units financial

"release of shares underlying restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"to satisfy tax withholding obligations"

FAQ

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

How many ONON shares did Helena Helmersson have withheld?

On September 24, 2026, 633 Class A shares were withheld at $30.16 per share; Helena Helmersson directly held 6,189 shares after the transaction. The withholding satisfied tax obligations connected to the release of shares underlying restricted stock units granted on September 21, 2026.

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

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Available on EDGAR 09/28/2026 - 06:16 AM Accepted by SEC EDGAR 09/28/2026 - 06:16 AM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Helmersson Helena

(Last) (First) (Middle)

C/O ON HOLDING AG

FORRLIBUCKSTRASSE 190

(Street)

ZURICH 8005

(City) (State) (Zip)

SWITZERLAND

(Country)

2. Issuer Name and Ticker or Trading Symbol
On Holding AG [ ONON ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/24/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Shares	09/24/2026		F		633(1)	D	$30.16	6,189	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The shares are withheld at the election of the reporting person to satisfy tax withholding obligations in connection with the release of shares underlying restricted stock units granted on September 21, 2026, as reported on the Reporting Person's Form 4 filed on September 23, 2026. The transaction does not represent a discretionary trade by the Reporting Person.

	/s/ Zlatina Iliev, Attorney-in-Fact	09/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)