Allen & Overy (A&O) has acted on its first major deal for new client Munich Re after handling German and US law advice in the reinsurance giant’s E4bn (£2.8bn) rights issue – the third largest ever by a German company.

The key offering, which is part of a bid to fund future growth and improve Munich Re’s credit rating, saw the reinsurance giant offer almost 51 million newly-issued shares to existing investors.