What is happening with merrimack pharmaceuticals inc stock today?

I don’t have real-time market data in this chat. If you want, I can fetch the latest price and news for Merrimack Pharmaceuticals (ticker MACK) by looking it up online—just say “Yes, please fetch.”

If you’d rather I give you context without live data: Merrimack is a biotech company that has faced significant clinical trial risks and volatility in its stock. Depending on recent news, the stock may have moved dramatically or the company may have undergone restructuring or delisting. Let me know what you prefer, and I can help interpret the latest headlines once I can access them.