UniFirst shares are surging in response to news that Cintas a competitor in manufacturing work uniforms, has made an offer to acquire the company, valuing it at $5.3 billion. Cintas, which offers first aid and safety and other uniforms, is proposing to pay $275 per share for all of UniFirst’s outstanding common and Class B shares. The stock rose in premarket trading after The Wall Street Journal reported that Cintas had made the offer.