|Apr 17, 2017||3.25||3.28||3.14||3.18||762,176|
|Apr 18, 2017||3.19||3.25||3.17||3.24||908,541|
|Apr 19, 2017||3.65||3.79||3.51||3.58||4,190,051|
|Apr 20, 2017||3.59||4.25||3.59||4.19||7,174,695|
|Apr 21, 2017||4.17||4.19||3.81||4.03||4,176,544|
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.