EQS-Adhoc: Siltronic AG: Siltronic AG successfully places new shares in the amount of 10 percent of the share capital at EUR 91 per share

Adhoc announcement / Disclosure of an inside information according to Article 17 MAR

Siltronic AG
Einsteinstraße 172
81677 Munich
www.siltronic.com

Siltronic AG successfully places new shares in the amount of 10 percent of the share capital at EUR 91 per share

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES OF AMERICA, AUSTRALIA, CANADA, JAPAN OR ANY OTHER JURISDICTION IN WHICH, OR TO PERSONS IN ANY JURISDICTION TO WHOM, SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL

Munich, June 15, 2026 – Siltronic AG will issue 3,000,000 new, no par value registered shares from the capital increase against contribution in cash through a partial utilization of its authorized share capital under exclusion of shareholders' subscription rights. Anchor shareholder HAL Trust has participated in the transaction with a meaningful order. The new shares have been placed with institutional investors by way of an accelerated bookbuilding at a placement price of EUR 91.00 per share.

The execution of the capital increase is expected to be registered on June 17, 2026 with the commercial register. The share capital will be increased from EUR 120,000,000.00 by EUR 12,000,000.00 to EUR 132,000,000.00. The new shares are expected to be admitted to trading at the regulated market of the Frankfurt Stock Exchange with simultaneous listing in the segment of the regulated market with additional post-listing requirements (Prime Standard) at the Frankfurt Stock Exchange on June 17, 2026 and are expected to be included into the existing trading on June 19, 2026. The new shares will carry dividend rights from January 1, 2026 onwards.

Siltronic AG is expecting to receive gross issue proceeds in the amount of EUR 273,000,000.00 and intends to use the proceeds from the capital increase to further support its future growth according to the current strategic targets, to strengthen the balance sheet, as well as for general corporate purposes.

Additional information:

ISIN:  DE000WAF3001
WKN: WAF300
Deutsche Börse: WAF
Trading:  Amtlicher Markt (Prime Standard), Frankfurter Wertpapierbörse

Contact:
Verena Stütze
Head of Investor Relations & Communications
Tel.: +49 (0)89 8564 3133
Email: investor.relations@siltronic.com

Important Information

The distribution of this announcement and the offering of the shares of Siltronic AG in certain jurisdictions may be restricted by law. Persons into whose possession this announcement comes are required to inform themselves about, and to observe, any such restrictions. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction. This announcement does not contain or constitute an offer of, or the solicitation of an offer to buy or subscribe for, securities to any person in the United States of America, Australia, Canada, Japan or in any jurisdiction to whom or in which such offer or solicitation is unlawful.

Securities will not be registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold absent registration except pursuant to an exemption from, or a transaction not subject to, the registration requirements under the U.S. Securities Act of 1933, as amended. There will be no public offer of securities in Germany, the United States of America or in any other jurisdiction.

Each of the joint bookrunners is acting exclusively for Siltronic AG and no one else in connection with the private placement of the new shares. They will not regard any other person as their respective clients in relation to the private placement of the new shares and will not be responsible to anyone other than Siltronic AG for providing the protections afforded to their respective clients, nor for providing advice in relation to the private placement of the new shares, the contents of this announcement or any transaction, arrangement or other matter referred to herein.

In connection with the private placement of the new shares, the joint bookrunners and any of their affiliates may take, subscribe for or purchase a portion of the new shares of Siltronic AG as a principal position and in that capacity may retain, purchase, sell, offer to sell for their own accounts such new shares and other securities of Siltronic AG or related investments in connection with the private placement of the new shares or otherwise. Accordingly, references in this announcement to the new shares of Siltronic AG being sold, offered, subscribed, acquired, placed or otherwise dealt in should be read as including any issue or offer to, or subscription, acquisition, placing or dealing by, any of the joint bookrunners and any of their affiliates acting in such capacity.

In addition, any of the joint bookrunners and any of their affiliates may enter into financing arrangements (including swaps or contracts for differences) with investors in connection with which the joint bookrunners and any of its affiliates may from time to time acquire, hold or dispose of the new shares of Siltronic AG. The joint bookrunners do not intend to disclose the extent of any such investment or transactions otherwise than in accordance with any legal or regulatory obligations to do so. The joint bookrunners reserve the right to take up a portion of the securities in the offering as a principal position at any stage at their sole discretion, inter alia, to take account of the objectives of the seller, MiFID II requirements and in accordance with allocation policies. None of the joint bookrunners or any of their affiliates’ or their respective directors, officers, employees, advisers or agents accepts any responsibility or liability whatsoever for or makes any representation or warranty, express or implied, as to the truth, accuracy or completeness of the information in this announcement (or whether any information has been omitted from the announcement) or any other information relating to Siltronic AG, its subsidiaries or associated companies, whether written, oral or in a visual or electronic form, and howsoever transmitted or made available or for any loss howsoever arising from any use of this announcement or its contents or otherwise arising in connection therewith.

In member states of the European Economic Area ("EEA") and the United Kingdom the placement of securities described in this announcement is directed exclusively at persons who are "qualified
investors" within the meaning of Regulation (EU) 2017/1129 of the European Parliament and of the Council of 14 June 2017 ("Prospectus Regulation") or the Public Offers and Admissions to
Trading Regulations 2024 ("POATRs") ("Qualified Investors").

In addition, in the UK, this announcement is only being distributed to and is only directed at (i) persons who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order"), (ii) high net worth entities falling within Article 49(2) of the Order, and (iii) persons at or to whom it can otherwise lawfully be distributed or directed (all such persons together being referred to as "relevant persons"). The new shares are only available to, and any invitation, offer or agreement to subscribe, purchase or otherwise acquire such shares will be engaged in only with, relevant persons. Any person who is not a relevant person should not act or rely on this announcement or any of its contents.

This announcement does not constitute a recommendation concerning the placement of the new shares. Investors should consult a professional advisor as to the suitability of such placement for the person concerned.

Pursuant to EU product governance requirements, the shares have been subject to a product approval process, under which each distributor has determined that such shares are: (i) compatible
with an end target market of retail investors and investors who meet the criteria of professional clients and eligible counterparties, each as defined in MiFID II; and (ii) eligible for distribution through all distribution channels as are permitted by MiFID II. Any distributor subsequently offering the shares is responsible for undertaking its own target market assessment in respect of the shares and determining appropriate distribution channels.

This adhoc announcement contains statements related to our future business and financial performance and future events or developments involving Siltronic that may constitute forward-looking statements. These statements may be identified by words such as "expect," "look forward to," "anticipate", "intend," "plan," "believe," "seek," "estimate," "will," "project" or words of similar meaning. Such statements are based on the current expectations and certain assumptions of the Siltronic management, of which many are beyond the control of Siltronic. These are subject to a number of risks, uncertainties and factors. Should one or more of these risks or uncertainties materialize, or should underlying expectations not occur or assumptions prove incorrect, actual results, performance or achievements of Siltronic may (negatively or positively) vary materially from those described explicitly or implicitly in the relevant forward-looking statement. Siltronic neither intends, nor assumes any obligation, to update or revise these forward-looking statements in light of developments which differ from those anticipated. This document contains supplementary financial measures that are, or may be, alternative performance measures not specifically identified in the applicable financial reporting frameworks. For the purpose of assessing Siltronic's financial position and performance, these supplementary financial measures should not be used in isolation or as an alternative to the financial measures presented in the consolidated financial statements and determined in accordance with relevant accounting frameworks. Other companies that present or report alternative performance measures with a similar title may calculate them differently. Explanations of financial measures used can be found in the Annual Report 2025 of Siltronic AG.

2346558  15-Jun-2026 CET/CEST