Kontron AG (formerly S&T AG)

Declaration of Voting Results & Voting Rights Announcements • Nov 28, 2025

EQS Voting Rights Announcement: Kontron AG

Kontron AG: Release according to Article 135, Section 2 BörseG with the objective of Europe-wide distribution 28.11.2025 / 19:00 CET/CEST

Dissemination of a Voting Rights Announcement transmitted by EQS News - a service of EQS Group.

The issuer is solely responsible for the content of this announcement.

Major holdings notification pursuant to Sec. 130 to 134 BörseG 2018

Wien, 27.11.2025

Overview

☐ Notification made after deadline

Caution: In case of violations of major holdings notification rules, please pay attention to Section 137 BörseG 2018 (Suspension of voting rights)

• 1. Issuer: Kontron AG
• 2. Reason for the notification: Other
• 3. Person subject to notification obligation

Hannes Niederhauser

• 4. Name of shareholder(s):
• 5. Date on which the threshold was crossed or reached:25.11.2025

6. Total positions

	% of voting rights attached to shares (7.A)	% of voting rights through financial/other instruments (7.B.1 + 7.B.2)	Total of both in % (7.A + 7.B)	Total number of voting rights of issuer
Resulting situation on the date on which threshold was crossed / reached	2,18 %	0,00 %	2,18 %	63 860 568
Position of previous notification (if applicable)	4,88 %	0,00 %	4,88 %

Details

Type of instrument

7. Notified details of the resulting situation:

A: Voting rights attached to shares

ISIN Code	Number of voting rights		% of voting rights
	Direct (Sec 130 BörseG 2018)	Indirect (Sec 133 BörseG 2018)	Direct (Sec 130 BörseG 2018)	Indirect (Sec 133 BörseG 2018)
AT0000A0E9W5	1 390 629		2,18 %
SUBTOTAL A	1 390 629		2,18 %

B 1: Financial / Other Instruments pursuant to Sec. 131 para. 1 No. 1 BörseG 2018

B 2: Financial / Other Instruments pursuant to Sec. 131 para. 1 No. 2 BörseG 2018

Type of instrument Expiration Date Exercise Period Physical / Cash Settlement Number of voting rights % of voting rights

SUBTOTAL B.2

8. Information in relation to the person subject to the notification obligation:

☒ Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer.

☐ Full chain of controlled undertakings through which the voting rights and/or the financial/other instruments are effectively held starting with the ultimate controlling natural person or legal entity:

9. In case of proxy voting

Date of general meeting: -

Voting rights after general meeting: - is equivalent to - voting rights.

10. Sonstige Kommentare:

grosso tec AG (HRB 11558 – AG München) is a shareholder of Kontron AG. grosso holding gesellschaft mbH (FN 559732 k) and Hannes Niederhauser each hold 47.5% of the share capital of grosso tec AG, so that grosso holding gesellschaft mbH and Hannes Niederhauser have so far been controlling grosso tec AG jointly. Hannes Niederhauser has now relinquished joint-control of grosso tec AG. The shareholding held by grosso tec AG in Kontron AG is therefore no longer attributable to Hannes Niederhauser. Neither grosso tec AG nor DI Hannes Niederhauser have sold Kontron shares.

The shareholding of Hannes Niederhauser in Kontron AG has thus mathematically fallen below the 4% threshold and also the 3% threshold.

Wien am 27.11.2025

28.11.2025 CET/CEST

View original content: EQS News

Language: English Company: Kontron AG

Industriezeile 35 4020 Linz Austria

Internet: https://www.kontron.com

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