Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-20-108942-index-headers.html | 2020-09-25 16:38:26 | |
| 0001104659-20-108942-index.html | 2020-09-25 16:38:26 | |
| 0001104659-20-108942.txt | 2020-09-25 16:38:26 | |
 0001104659-20-108942-xbrl.zip | 58804 | 2020-09-25 16:38:26 |
| FilingSummary.xml | 1720 | 2020-09-25 16:38:26 |
| Financial_Report.xlsx | 5420 | 2020-09-25 16:38:26 |
| imgn-20200925.xsd | 3189 | 2020-09-25 16:38:26 |
| imgn-20200925_lab.xml | 34591 | 2020-09-25 16:38:26 |
| imgn-20200925_pre.xml | 22712 | 2020-09-25 16:38:26 |
| MetaLinks.json | 38702 | 2020-09-25 16:38:26 |
| R1.htm | 38131 | 2020-09-25 16:38:26 |
| report.css | 2766 | 2020-09-25 16:38:26 |
| Show.js | 1085 | 2020-09-25 16:38:26 |
| tm2031617-2_8k.htm | 27526 | 2020-09-25 16:38:26 |
| tm2031617-2_8k_htm.xml | 3468 | 2020-09-25 16:38:26 |
| tm2031617d2_ex10-1.htm | 241697 | 2020-09-25 16:38:26 |
| tm2031617d2_ex5-1.htm | 12560 | 2020-09-25 16:38:26 |
 tm2031617d2_ex5-1img01.jpg | 3772 | 2020-09-25 16:38:26 |
| tm2031617d2_ex99-1.htm | 4830 | 2020-09-25 16:38:26 |