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This press release does not constitute or form part of any offer or invitation to sell or issue or any solicitation of any offer to purchase or subscribe for any securities in the United States, Canada, Australia or Japan or any other jurisdiction in which, or to any persons to whom, such offering, solicitation or sale would be unlawful, nor shall it (or any part of it), or the fact of its distribution, form the basis of, or be relied upon in connection with, or act as any inducement to enter into, any contract or commitment whatsoever relating to any securities.

PRESS release

ETV Montana Tech Holding GmbH and Makra GmbH launch placement of up to 500,000 existing shares in ASTA Energy Solutions AG

• Placement of up to 500,000 existing shares in ASTA Energy Solutions AG (approx. 3.5% of share capital) with institutional investors only
• Free float to increase to approx. 42.9%, hereby improving trading liquidity of the stock
• Part of the proceeds for the Selling Shareholders to be used to settle a contractual earn-out obligation
• ETV Montana Tech Holding GmbH and Makra GmbH to remain majority shareholders with a combined stake of approx. 51.2%

Oed (Austria), 29 September 2026 – ASTA Energy Solutions AG (ISIN AT100ASTA001, “ASTA” or the “Company”) has been informed by its majority shareholders ETV Montana Tech Holding GmbH and Makra GmbH (together, the “Selling Shareholders”) that they intend to sell in aggregate up to 500,000 existing shares in the Company by way of an accelerated bookbuilding process solely to institutional investors in transactions exempt from, or not subject to, the registration requirements of the U.S. Securities Act of 1933, as amended (the “Placement”). This corresponds to up to approx. 3.5% of the Company's share capital.

The bookbuilding will commence immediately following the publication of this announcement and may close at short notice. The placement price and final number of shares sold will be published following completion of the bookbuilding process. Settlement is expected to take place on 1 September 2026 (T+2). The Company will not receive any proceeds from the Placement.

Increasing free float and liquidity
The Placement responds to continued demand from institutional investors for increased free float and improved trading liquidity in ASTA shares. Upon completion of the Placement in full, the free float is expected to increase from approx. 39.4% to approx. 42.9%. The transaction is intended to enhance share liquidity and to broaden the Company's international institutional investor base.

Use of proceeds
The Selling Shareholders intend to use part of the net proceeds from the Placement towards a contractual earn-out obligation announced and agreed in connection with the acquisition of ASTA. The earn-out obligation was triggered by the successful completion of ASTA's IPO early 2026 and is payable to the former owner of the business (Montana Aerospace AG).

Long-term commitment of the majority shareholders
Following completion of the Placement, the Selling Shareholders are expected to continue to hold in aggregate approx. 51.2% of the Company's share capital and will remain the majority shareholders of ASTA. The existing lock-up of the Selling Shareholders from the IPO of the Company beginning of this year has been waived by the Sole Global Coordinator, and the Selling Shareholders have agreed to a new lock-up period of 180 days following settlement, subject to certain customary exceptions.

Berenberg acts as Sole Global Coordinator and Sole Bookrunner for the Placement.

About ASTA Energy Solutions AG
ASTA Energy Solutions AG is a leading global manufacturer of high-precision copper solutions for power generation, power transmission and e-mobility. With a history spanning over 210 years and employing around 1,600 employees across six sites on three continents, ASTA combines unique technological expertise with a global production network. Its long-standing customers include leading companies driving the global energy transition, such as Siemens Energy, GE Vernova, Hitachi and Andritz. Following its successful initial public offering in January 2026, ASTA was admitted to the SDAX index of the Frankfurt Stock Exchange within a very short time and has since met the strict transparency and reporting requirements of the Prime Standard.

Disclaimer

This press release is not for publication, distribution or release, directly or indirectly, in whole or in part, in or into the United States of America (including its territories and possessions, any state of the United States of America and the District of Columbia), Canada, Australia or Japan or to any person located or resident in any other jurisdiction in which it would be unlawful to do so. The distribution of this press release may be restricted by law in certain jurisdictions and persons into whose possession this document or other information referred to herein comes should inform themselves about and observe any such restriction. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.

This press release does not constitute or form part of any offer or invitation to sell or issue or any solicitation of any offer to purchase or subscribe for any securities in the United States, Canada, Australia or Japan or any other jurisdiction in which, or to any persons to whom, such offering, solicitation or sale would be unlawful, nor shall it (or any part of it), or the fact of its distribution, form the basis of, or be relied upon in connection with, or act as any inducement to enter into, any contract or commitment whatsoever relating to any securities.

The securities mentioned herein have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the “Securities Act”), or the securities laws of any state or other jurisdiction of the United States, and may not be offered, sold, pledged or otherwise transferred in or into the United States absent such registration, except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act, in each case in compliance with any applicable securities laws of any state or other jurisdiction of the United States. Accordingly, the securities mentioned herein are being offered and sold only to persons reasonably believed to be qualified institutional buyers as defined in, and in reliance on, Rule 144A under the Securities Act and in “offshore transactions” outside the United States in compliance with, and in reliance on, Regulation S under the Securities Act. No public offering of the securities has been or will be made in the United States.

In member states of the European Economic Area, this press release and any offer if made subsequently is directed exclusively at persons who are “qualified investors” within the meaning of the Prospectus Regulation (“Qualified Investors”), and does not constitute and shall not, in any circumstances, constitute an invitation to the public in connection with any offer or constitute any offer to the public, each within the meaning of the Prospectus Regulation. The offer and sale of the securities referred to herein will be made pursuant to an exemption under the Prospectus Regulation from the requirement to produce a prospectus for offers of securities. For these purposes, the expression “Prospectus Regulation” means Regulation (EU) 2017/1129, as amended.

In the United Kingdom, this communication is directed only at (i) persons who are outside of the United Kingdom, (ii) 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 (Order) (investment professionals) or (iii) high net worth companies, and other persons to whom it may lawfully be communicated, falling within Article 49(2)(a) to (d) of the Order (all such persons referred to above being Relevant Persons). Any investment activity to which this communication relates will only be available to and will only be engaged with Relevant Persons.

No representation or warranty, express or implied, is or will be made as to, or in relation to, and no responsibility or liability is or will be accepted by Joh.  Berenberg, Gossler & Co. KG as placement agent (the “Placement Agent”) or by any of its affiliates or agents as to, or in relation to, the accuracy or completeness of this press release or any other written or oral information made available to or publicly available to any interested party or its advisers, and any liability therefore is expressly disclaimed.

The information contained in this press release is for background purposes only and does not purport to be full or complete. No reliance may be placed for any purpose on the information contained in this press release or its accuracy or completeness. This press release does not purport to identify or suggest the risks (direct or indirect) which may be associated with an investment in the Shares. Any investment decision in connection with the Shares must be made solely on the basis of all publicly available information relating to the Shares (which has not been independently verified by the Placement Agent).

The Placement Agent is acting on behalf of the Selling Shareholders and no one else in connection with the offering of the Shares and will not be responsible to any other person for providing the protections afforded to clients of the Placement Agent nor for providing advice in relation to any offering of the Shares.