Adds context, details from statement from paragraph 2

By Alexander Hübner and Linda Pasquini

May 15 (Reuters) - Leopard tank maker KNDS is proceeding with preparations for a potential stock market listing on schedule, its CEO said on Friday, leaving Germany with a narrowing window to secure a pre-IPO stake in the Franco-German manufacturer.

Talks with all relevant stakeholders were continuing constructively, Chief Executive Jean-Paul Alary said in a statement after German media reports suggested a possible delay.

Berlin aims to secure a pre-IPO stake in the tank maker to safeguard national security interests and retain influence alongside France.

KNDS is owned through a 50-50 split between the French government and the German family owners of former Krauss-Maffei Wegmann (KMW), which plan to sell their stake. KMW was merged with France's Nexter into KNDS.

GERMAN GOVERNMENT STAKE AT RISK

A German government stake in KNDS could help to prevent any possible break-up of the company, and possibly provide oversight and influence over tank and artillery production as Europe rapidly rearms.

If no deal is struck before the IPO, France could emerge as the dominant owner once the German family shareholders sell down.

Within Germany's coalition government, the defence and finance ministries support a 40% stake for the state to match a future French holding, while the economy ministry and Chancellor Friedrich Merz consider 30% as sufficient for a blocking minority under Dutch law. KNDS N.V., the company's parent entity, is registered in Amsterdam.

Media outlets, including Die Welt and Manager Magazin, have reported that the German government asked KNDS's owners and management to postpone the IPO, originally planned before the summer break, until the autumn.

"KNDS would naturally welcome a potential participation of the federal government in the shareholder base," Alary said.

"The focus, however, remains on preparing the IPO carefully and in the best interests of the company, its existing shareholders, employees and customers."