Mersana Therapeutics, Inc. (NASDAQ:MRSN – Get Rating)’s stock price traded up 4.7% during mid-day trading on Thursday . The stock traded as high as $4.48 and last traded at $4.48. 1,401,726 shares were traded during mid-day trading, an increase of 7% from the average session volume of 1,304,263 shares. The stock had previously closed at […]