EQS-Adhoc: Siltronic AG: Siltronic AG successfully places new shares amounting to 10 percent of the share capital at a price of EUR 91 per share

Ad hoc announcement / publication of inside information according to Article 17 MAR

Siltronic AG
Einsteinstrasse 172
81677 Munich
www.siltronic.com

Siltronic AG placed successfully new shares to the extent of 10 percent of the share capital at a price of EUR 91 per share

NOT FOR PUBLICATION, DISTRIBUTION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES OF AMERICA, AUSTRALIA, CANADA OR JAPAN OR IN ANY OTHER JURISDICTION IN, OR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

Munich, June 15, 2026 – As part of the capital increase against cash contributions, Siltronic AG will issue 3,000,000 new, no-par value registered shares by partially utilizing its authorized share capital while excluding shareholders’ subscription rights. Anchor shareholder HAL Trust participated in the transaction with a significant order. The new shares were placed with institutional investors as part of an accelerated bookbuilding process at a placement price of EUR 91.00 per share.

The capital increase is expected to be entered in the commercial register on June 17, 2026. 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 on the regulated market of the Frankfurt Stock Exchange on June 17, 2026 and at the same time listed in the sub-area of ​​the regulated market (Prime Standard) with additional post-admission obligations on the Frankfurt Stock Exchange and are expected to be included in existing trading on June 19, 2026. The new shares are entitled to dividends from January 1, 2026.

Siltronic AG expects gross issue proceeds of EUR 273,000,000.00 and intends to use the proceeds from the capital increase to further support its future growth in line with current strategic goals, to strengthen the balance sheet and for general corporate purposes.

Additional information:

ISIN: DE000WAF3001
WKN: WAF300
German stock exchange:WAF
Permit: Official market (Prime Standard), Frankfurt Stock Exchange

Contact:
Verena Support
Head of Investor Relations & Communications
Tel.: +49 (0)89 8564 3133
Email: [email protected]

Important NOTE

The distribution of this information and the offering of Siltronic AG securities is subject to legal restrictions in various jurisdictions. Persons into whose possession this document comes are encouraged to inform themselves about such restrictions. Any failure to comply with these restrictions may constitute a violation of applicable securities laws. This announcement does not constitute an offer to purchase securities or the solicitation of an offer to purchase securities by any person in the United States of America, Australia, Canada, Japan or any other jurisdiction in which such offer or solicitation would be unlawful.

The shares will not be registered under the US Securities Act of 1933, as amended, and may not be sold or offered for sale without prior registration under the US Securities Act of 1933, as amended, except pursuant to an exemption from the registration requirements thereunder. There will be no public offering of securities in Germany, the United States of America or any other jurisdiction.

Each of the joint bookrunners acts exclusively for Siltronic AG and for no one else in connection with the placement of the new shares. In connection with the placement of the New Shares, the Joint Bookrunners will not consider anyone other than their client and will not be responsible to anyone other than Siltronic AG for providing the protection that they provide to their clients or for providing advice in connection with the placement of the New Shares, the contents of this release or any other transaction, agreement or other matter referred to in this release.

In connection with the placement of the new shares, the joint bookrunners and all of their affiliated companies may take over, subscribe to or acquire a portion of the new shares of Siltronic AG as a proprietary position and in this capacity hold, purchase, sell or offer for sale such shares and other securities of Siltronic AG or related investments in connection with the placement of the new shares or otherwise for their own account. Accordingly, references in this announcement to new shares of Siltronic AG being sold, offered, subscribed for, acquired, placed or otherwise traded should be read to include any issue or offer of or subscription, acquisition, placement or trading by any joint bookrunner and any of their affiliates acting in such capacity. In addition, each Joint Bookrunner and each of their affiliates may enter into financing agreements (including swaps or contracts for difference) with investors in connection with which the Joint Bookrunners and each of their affiliates may from time to time acquire, hold or dispose of new shares in Siltronic AG. The Joint Bookrunners do not intend to disclose the size of any such investments or transactions unless they are required to do so by law or regulation. The Joint Bookrunners reserve the right to take a portion of the Securities in the Offering as their own position at any time at their sole discretion, taking into account, among other things, the Seller’s objectives, MiFID II requirements and compliance with the Allocation Guidelines. Neither the Joint Bookrunners nor any of their affiliates nor their respective officers, employees, consultants or agents assume any responsibility or liability or make any warranty, express or implied, with respect to the authenticity, accuracy or completeness of the information in this publication (or the lack of information in this publication) or any other information about Siltronic AG, whether in written, oral or visual or electronic form and regardless of the means of transmission or provision, or for any damages (regardless of how they arise) arising from its use this publication or its contents or in any other way related thereto.

In Member States of the European Economic Area (“EEA“) and in the United Kingdom, the placement of the securities described in this announcement is directed exclusively at 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 United Kingdom, this document is being distributed exclusively to and is intended solely for (i) persons who have professional experience in investment matters and who are qualified under Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the “order“), (ii) high net worth entities covered by Article 49(2) of the Order, and (iii) persons to whom this document may otherwise lawfully be distributed or addressed (all such persons collectively referred to as “relevant people“). The Securities are available only to Relevant Persons and any invitation, offer or agreement to subscribe, purchase or otherwise acquire such Securities is being entered into only with Relevant Persons. Persons who are not Relevant Persons should not act or rely on this communication or its contents.

This publication does not constitute a recommendation regarding the Placing. Investors should consult a professional advisor regarding the suitability of the Placing for the individual concerned.

In accordance with EU product surveillance requirements, a product clearance process has been carried out with respect to the Shares by each distributor, which has determined that the Shares are (i) suitable for an end-customer target market consisting of retail clients and investors who meet the criteria for professional clients and eligible counterparties (in each case within the meaning of MiFID II), and (ii) for distribution through all distribution channels permitted under MiFID II. Each distribution company that subsequently offers the shares is responsible for conducting its own target market determination of the shares and determining appropriate distribution channels.

This ad hoc announcement contains statements that relate to our future business and financial performance as well as future events or developments affecting Siltronic and may constitute forward-looking statements. These statements can be identified by phrases such as “expect,” “want,” “anticipate,” “intend,” “plan,” “believe,” “seek,” “estimate,” and “will” or similar terms. Such statements are based on Siltronic’s management’s current expectations and certain assumptions, many of which are beyond Siltronic’s control. They are therefore subject to a variety of risks and uncertainties. Should one or more of these risks or uncertainties materialize, or should underlying expectations not materialize or assumptions prove to be incorrect, Siltronic’s actual results, performance and achievements may differ materially (both negatively and positively) from those expressed or implied in the forward-looking statement. Siltronic assumes no obligation and does not intend to update or revise these forward-looking statements if developments differ from those expected.

This document contains supplementary financial measures, which are or may be so-called alternative performance measures, which are not precisely defined in relevant accounting frameworks. When assessing Siltronic’s net assets, financial position and results of operations, these supplementary financial indicators should not be used in isolation or as an alternative to the financial indicators presented in the consolidated financial statements and determined in accordance with the relevant accounting frameworks. Other companies that present or report alternative performance measures with a similar name may calculate them differently. Explanations of the financial indicators used can be found in the 2025 annual report of Siltronic AG.