Danaher Corporation shares rise 1.14% premarket as healthcare entrepreneur Ron Zwanziger threatens adversarial path against OraSure Technologies board.

Danaher Corporation rose 1.14% in premarket trading. The increase in stock price may be attributed to the news that prominent healthcare entrepreneur Ron Zwanziger has threatened to pursue a more 'adversarial path' if the OraSure Technologies board continues to resist his offer to buy the medical devices company. This news could be seen as a potential takeover bid, which often leads to increased stock prices for the target company.