Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-20-137428-index-headers.html | 2020-12-18 16:16:09 | |
| 0001104659-20-137428-index.html | 2020-12-18 16:16:09 | |
| 0001104659-20-137428.txt | 2020-12-18 16:16:09 | |
 0001104659-20-137428-xbrl.zip | 37754 | 2020-12-18 16:16:09 |
| FilingSummary.xml | 1641 | 2020-12-18 16:16:09 |
| Financial_Report.xlsx | 5419 | 2020-12-18 16:16:09 |
| imgn-20201218.xsd | 3190 | 2020-12-18 16:16:09 |
| imgn-20201218_lab.xml | 34592 | 2020-12-18 16:16:09 |
| imgn-20201218_pre.xml | 22713 | 2020-12-18 16:16:09 |
| MetaLinks.json | 38702 | 2020-12-18 16:16:09 |
| R1.htm | 38582 | 2020-12-18 16:16:09 |
| report.css | 2767 | 2020-12-18 16:16:09 |
| Show.js | 1084 | 2020-12-18 16:16:09 |
| tm2038486d5_8k.htm | 22223 | 2020-12-18 16:16:09 |
| tm2038486d5_8k_htm.xml | 3468 | 2020-12-18 16:16:09 |
| tm2038486d5_ex99-1.htm | 129891 | 2020-12-18 16:16:09 |