Senior insider sale

CEO at ON HOLDING AG — senior position signals high conviction

$11.25M

293.01K shares

What this filing means

HOFFMANN MARTIN plans to sell 293.01K shares of ON HOLDING AG valued at approximately $11.25M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

HOFFMANN MARTIN

Filed: 5/22/2026ACC: 0001958244-26-000311

InsiderHOFFMANN MARTINCIK 1860218

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IssuerON HOLDING AGCIK 1858985

Officer· CEO

Since Mar 2026

293.01K

Shares to sell

$11.25M

Approx. market value

100K

Acquired (3 months)

Planned

17 completed

Securities Acquired — Last 3 Months1

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Acquired from issuer in private transaction

None

12/21/2017

100K

Total acquired100K

Acquisition Date	Type	Amount Acquired	Gift
12/21/2017	Acquired from issuer in private transaction None	100K	—
Total		100K

Planned & Completed Dispositions18

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Completed

—Completed

Units to sell

50K

Market value

$1.95M

5/21/2026

—Completed

Units to sell

4.15K

Market value

$157.2K

5/18/2026

—Completed

Units to sell

25K

Market value

$926.6K

5/15/2026

—Completed

Units to sell

50K

Market value

$1.76M

5/13/2026

—Completed

Units to sell

4.15K

Market value

$141.4K

5/11/2026

—Completed

Units to sell

4.15K

Market value

$143.0K

5/4/2026

—Completed

Units to sell

4.15K

Market value

$148.8K

4/27/2026

—Completed

Units to sell

4.15K

Market value

$151.7K

4/20/2026

—Completed

Units to sell

4.15K

Market value

$140.9K

4/13/2026

—Completed

Units to sell

4.15K

Market value

$139.4K

4/6/2026

—Completed

Units to sell

4.15K

Market value

$134.1K

3/30/2026

—Completed

Units to sell

4.15K

Market value

$165.1K

3/23/2026

—Completed

Units to sell

4.15K

Market value

$161.5K

3/16/2026

—Completed

Units to sell

4.15K

Market value

$166.0K

3/9/2026

—Completed

Units to sell

14.06K

Market value

$592.2K

3/6/2026

—Completed

Units to sell

4.15K

Market value

$192.2K

3/2/2026

—Completed

Units to sell

4.15K

Market value

$197.2K

2/23/2026

Planned — Approximate Date

NYSEPlanned

Units to sell

100K

Market value

$3.98M

5/22/2026

Total

Units

293.01K

Value

$11.25M

Date	Units to Sell	Approx. Market Value	Exchange	Status
Completed
5/21/2026	50K	$1.95M	—	Completed
5/18/2026	4.15K	$157.2K	—	Completed
5/15/2026	25K	$926.6K	—	Completed
5/13/2026	50K	$1.76M	—	Completed
5/11/2026	4.15K	$141.4K	—	Completed
5/4/2026	4.15K	$143.0K	—	Completed
4/27/2026	4.15K	$148.8K	—	Completed
4/20/2026	4.15K	$151.7K	—	Completed
4/13/2026	4.15K	$140.9K	—	Completed
4/6/2026	4.15K	$139.4K	—	Completed
3/30/2026	4.15K	$134.1K	—	Completed
3/23/2026	4.15K	$165.1K	—	Completed
3/16/2026	4.15K	$161.5K	—	Completed
3/9/2026	4.15K	$166.0K	—	Completed
3/6/2026	14.06K	$592.2K	—	Completed
3/2/2026	4.15K	$192.2K	—	Completed
2/23/2026	4.15K	$197.2K	—	Completed
Planned — Approximate Date
5/22/2026	100K	$3.98M	NYSE	Planned
Total	293.01K	$11.25M