Helvetia, a Swiss insurer to buying rival Nationale Suisse in a deal valued at $1.4 billion Swiss francs. Helvetia is offering 80 Swiss francs a share for Nationale Suisse; a 26% premium over the company closing price on Friday. Helvetia was already the second largest share holder of the company, with an 18.7% stake. Nationale Suisse's board of directors has already recommended the sale to their shareholders. Together the two companies should have an estimated annual profit of more than 500 million Swiss francs.