|Sep 18, 2017||6.80||6.95||6.67||6.76||2,422,692|
|Sep 19, 2017||6.76||6.82||6.52||6.57||2,353,854|
|Sep 20, 2017||6.62||6.63||6.44||6.53||2,351,965|
|Sep 21, 2017||6.50||6.61||6.17||6.50||2,072,013|
|Sep 22, 2017||6.49||6.64||6.43||6.55||1,555,178|
Year End Stock Prices
The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and ImmunoGen, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.