On Holding CFO sells 687 shares at $27.742

CFO Frank Sluis reported RSU vesting into Class A Shares and a modest open-market sale of On Holding AG stock.

Rhea-AI Filing Summary

On Holding AG (ONON) reported that its CFO, Frank Sluis, executed several equity transactions. On September 5, 2026, 1,684 Restricted Stock Units vested and were settled into 1,684 Class A Shares at no additional cost, and 18,537 Restricted Stock Units remained outstanding afterward. Those RSUs were part of an award granted on June 22, 2026 that vests quarterly in 1/12 installments through June 5, 2029. On September 8, 2026, he sold 687 Class A Shares in a market or private transaction at $27.742 per share. No Rule 10b5-1 trading plan is indicated.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Sluis Frank

Role CFO

Sold 687 shs ($19K)

Approx. gross sale proceeds $19K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Sale	Class A Shares	687	$27.742	$19K
Exercise	Restricted Stock Units F2, F3	1,684	$0.00	$0.00
Exercise	Class A Shares F1	1,684	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 18,537 contracts (Direct); Class A Shares — 997 shares (Direct)

Footnotes (3)

1. F1. Shares acquired upon the vesting and settlement of restricted stock units at no additional cost. See Table II.
2. F2. Each restricted stock unit represents a contingent right to receive one share of the Issuer's class A shares.
3. F3. Granted 06/22/2026; vests quarterly in 1/12 installments ending 06/05/2029.

Key Figures

Class A Shares sold: 687 shares Sale price per share: $27.742 per share RSUs vested and settled: 1,684 units/shares +3 more

6 metrics

Class A Shares sold 687 shares Sale by CFO on September 8, 2026

Sale price per share $27.742 per share Class A Share sale on September 8, 2026

RSUs vested and settled 1,684 units/shares RSUs converted into Class A Shares on September 5, 2026

RSUs remaining 18,537 units Restricted Stock Units held after September 5, 2026 transaction

RSU grant date June 22, 2026 Grant underlying the RSUs referenced in the Form 4

RSU vesting period end June 5, 2029 Quarterly 1/12 vesting installments end date

Key Terms

Restricted Stock Units, derivative security, Rule 10b5-1, vests quarterly

4 terms

Restricted Stock Units financial

"The security titled "Restricted Stock Units" was converted into Class A Shares"

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.

derivative security financial

"Described as an exercise or conversion of a derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is indicated for these transactions"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

vests quarterly financial

"The RSU grant vests quarterly in 1/12 installments through June 5, 2029"

FAQ

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

What equity transactions did ONON CFO Frank Sluis report on this Form 4?

He reported 1,684 Restricted Stock Units vesting and settling into 1,684 Class A Shares on September 5, 2026, and a sale of 687 Class A Shares on September 8, 2026 at $27.742 per share.

How many Restricted Stock Units does ONON CFO Frank Sluis hold after these transactions?

After the September 5, 2026 vesting and settlement, 18,537 Restricted Stock Units remained outstanding, representing a continuing contingent right to receive Class A Shares as they vest.

What was the price and size of the ONON share sale by the CFO?

On September 8, 2026, the CFO sold 687 Class A Shares of On Holding AG at a price of $27.742 per share in an open-market or private transaction.

Were the ONON CFO’s transactions made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates no Rule 10b5-1 trading plan; the document-level checkbox for such a plan is not marked as affirming trades under Rule 10b5-1.

How do the ONON CFO’s RSUs convert into Class A Shares?

Each Restricted Stock Unit represents a contingent right to receive one Class A Share of On Holding AG upon vesting. On September 5, 2026, 1,684 RSUs vested and were settled into 1,684 Class A Shares at no additional cost.

What is the vesting schedule for the ONON CFO’s RSU grant mentioned in this Form 4?

The RSU grant referenced was granted on June 22, 2026 and vests quarterly in 1/12 installments, with vesting installments ending on June 5, 2029.

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

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Available on EDGAR 09/09/2026 - 09:12 AM Accepted by SEC EDGAR 09/09/2026 - 09:12 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^*

Sluis Frank

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/05/2026

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	09/05/2026		M		1,684	A	$0(1)	1,684	D
Class A Shares	09/08/2026		S		687	D	$27.742	997	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
Restricted Stock Units(2)	$0	09/05/2026		M			1,684	(3)	(3)	Class A Shares	1,684	$0	18,537	D

Explanation of Responses:

1. Shares acquired upon the vesting and settlement of restricted stock units at no additional cost. See Table II.

2. Each restricted stock unit represents a contingent right to receive one share of the Issuer's class A shares.

3. Granted 06/22/2026; vests quarterly in 1/12 installments ending 06/05/2029.

	/s/ Zlatina Iliev, Attorney-in-Fact	09/09/2026
	** 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)