SIX Delisting Leclanché SA - Yverdon-les-Bains

On 8 October 2026, SIX Exchange Regulation AG (SER) submitted a request to the Regulatory Board of SIX Group AG for the delisting of all registered shares of Leclanché SA (Swiss Security Number 11’030’311 / ISIN CH0110303119) with a nominal value of CHF 0.10 each listed on SIX Swiss Exchange AG pursuant to Art. 58 para. 1 ciph. 4 Listing Rules (LR) as trading in shares of Leclanché SA has been suspended for more than three months and the reasons for the imposition of this measure have not ceased to exist. The reason for the imposition of this measure was Leclanché SA’s failure to prepare and publish its 2025 annual report in accordance with Art. 49 LR. The Regulatory Board approved the request in its decision of 15 October 2026.

The decision of the Regulatory Board is not legally binding yet and can be appealed to the Appeals Board within 20 trading days. SER will inform accordingly.

Trading in Leclanché SA registered shares remains suspended for the time being. Trading will reopen after the announcement of the possible, legally binding delisting and will remain open for a total of three months until the last trading day.

SIX Exchange Regulation AG

SIX Exchange Regulation AG is a legally independent company of SIX Group and of one the Regulatory bodies of the SIX trading venues. It performs the functions assigned under Swiss federal law and enforces the rules laid down by the Regulatory Board, and monitors compliance with legal and regulatory requirements. As part of its diverse remit, SIX Exchange Regulation AG submits proposals for sanctions to the Sanctions Commission or can enact sanction notices. SIX Exchange Regulation AG consists of the divisions Listing & Enforcement, responsible for regulating issuers, and Surveillance & Enforcement, which monitors trading.

SIX

SIX provides and operates stable and efficient infrastructure for the Swiss and Spanish financial centers, thus ensuring access to the capital markets and the flow of information and money between financial market players. As a global provider of financial information, SIX delivers high-quality reference, pricing, corporate actions, and ESG data and provides regulatory services and indices to clients around the world. The company is owned by its users (more than 120 banks) with a workforce of 4,160 employees and a presence in 19 countries.