Parent Directory| Name | Size | Last Modified |
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| 0001104659-23-072241-index.html | 2023-06-16 16:15:22 | |
| 0001104659-23-072241.txt | 2023-06-16 16:15:22 | |
 0001104659-23-072241-xbrl.zip | 36534 | 2023-06-16 16:15:22 |
| FilingSummary.xml | 1647 | 2023-06-16 16:15:22 |
| Financial_Report.xlsx | 5699 | 2023-06-16 16:15:22 |
| imgn-20230614.xsd | 3036 | 2023-06-16 16:15:22 |
| imgn-20230614_lab.xml | 34476 | 2023-06-16 16:15:22 |
| imgn-20230614_pre.xml | 22597 | 2023-06-16 16:15:22 |
| MetaLinks.json | 39374 | 2023-06-16 16:15:22 |
| R1.htm | 39587 | 2023-06-16 16:15:22 |
| report.css | 2767 | 2023-06-16 16:15:22 |
| Show.js | 1084 | 2023-06-16 16:15:22 |
| tm2318847d1_8k.htm | 41165 | 2023-06-16 16:15:22 |
| tm2318847d1_8k_htm.xml | 3587 | 2023-06-16 16:15:22 |
| tm2318847d1_ex3-1.htm | 162935 | 2023-06-16 16:15:22 |