Closing price on 12/31/2014: $6.10
Filers who had this stock in their top 10: 0
13F Filers holding this stock: 131
Aggregate shares on 12/31/2014: 69,291,056
Aggregate shares on 09/30/2014: 74,272,156
Percent change: -6.71%
Funds creating new positions: 21
Funds Adding to an existing position: 50
Funds closing out their position: 30
Funds reducing their position: 36
View recent insider trading info

ImmunoGen Inc. Chart by YCharts

Schedule 13D and 13G filings submitted since 12/31/2014

***Only 13D/G Events since 12/31/2014 are shown. To see all 13D/G events for this stock, please use the search page***
Filing Company Date of
Total Reported
Shares Owned
Shares Reported
on 13F
SC 13G/A BLACKROCK INC. 01/29/2015 5,960,635 2,471
SC 13G/A VANGUARD GROUP INC 02/10/2015 5,310,190 5,310,180
SC 13G/A CLEARBRIDGE INVESTMENTS, LLC 02/10/2015 13,500,020 11,436,364
SC 13G/A FMR LLC 02/13/2015 9,416,760 9,416,641
SC 13G/A PRIMECAP MANAGEMENT COMPANY 02/13/2015 12,127,083 12,127,073

13F Filers holding this stock

Quarter 1: Refresh

Changes in Holdings:

*Shares are split adjusted
*Please note that if a filer hasn't submitted a 13F filing for a quarter then the filer's shares will be listed as "Sold All"

Elevate your investments