13F Filings History of MPM BioImpact LLC

Latest 13F report
Q3 2025 - 14 Nov 2025
Value $
$610,879,430
Signature - Title
Christopher Wolf - Chief Financial Officer
Location
Boston, MA
Summary
This page shows a list of all the recent 13F filings made by MPM BioImpact LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. MPM BioImpact LLC reported 40 stock holdings with total value $610,879,430 as of Q3 2025. Top holdings included MDGL, CGEM, RNA, TRVI, and EWTX.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q3 2025 40 $610,879,430 +$60,680,672 -$109,010,583 -$48,329,911 MDGL, CGEM, RNA, TRVI, EWTX 13F-HR 14 Nov 2025, 16:30
Q2 2025 44 $577,150,843 +$96,766,442 -$109,400,259 -$12,633,817 CGEM, MDGL, ZLAB, GH, SPRY 13F-HR 14 Aug 2025, 16:45
Q1 2025 43 $581,677,555 +$124,132,115 -$131,904,699 -$7,772,584 CGEM, MDGL, ZLAB, EWTX, LNTH 13F-HR 15 May 2025, 16:45
Q4 2024 47 $704,362,373 +$199,450,687 -$70,469,706 +$128,980,981 CGEM, CRNX, EWTX, INSM, NTRA 13F-HR 14 Feb 2025, 16:20
Q3 2024 43 $666,570,839 +$121,902,236 -$113,688,535 +$8,213,701 CGEM, INSM, OLMA, RNA, CRNX 13F-HR 12 Nov 2024, 19:40
Q2 2024 44 $643,506,945 +$157,959,921 -$64,182,631 +$93,777,290 CGEM, INSM, OLMA, ITOS, CRNX 13F-HR 14 Aug 2024, 11:32
Q1 2024 36 $483,179,737 +$161,395,990 -$77,673,000 +$83,722,990 GERN, IOVA, ZNTL, ITOS, STRO 13F-HR 15 May 2024, 16:22
Q4 2023 32 $427,428,816 +$25,421,555 -$32,488,966 -$7,067,411 CGEM, IOVA, OLMA, GERN, ITOS 13F-HR 13 Feb 2024, 16:06
Q3 2023 39 $374,602,543 +$58,621,803 -$121,103,279 -$62,481,476 CGEM, OLMA, GERN, RPTX, ITOS 13F-HR 14 Nov 2023, 16:38
Q2 2023 41 $496,602,631 +$138,075,140 -$67,708,607 +$70,366,533 CGEM, ISEE, KDNY, GERN, RETA 13F-HR 14 Aug 2023, 12:19
Q1 2023 31 $384,916,993 +$43,120,354 -$16,534,597 +$26,585,757 CGEM, PRVB, ISEE, ITOS, INBX 13F-HR 12 May 2023, 13:02
Q4 2022 33 $385,456,912 +$49,520,591 -$6,963,043 +$42,557,548 CGEM, ITOS, INBX, RPTX, ISEE 13F-HR 14 Feb 2023, 11:41
Q3 2022 38 $422,223,000 +$74,289,939 -$6,261,278 +$68,028,661 CGEM, ITOS, INBX, VERV, NTLA 13F-HR 14 Nov 2022, 09:22
Q2 2022 37 $359,998,000 +$43,008,021 -$1,178,712 +$41,829,309 CGEM, ITOS, RPTX, MRUS, NTLA 13F-HR 11 Aug 2022, 17:27
Q1 2022 37 $372,610,000 +$23,531,315 -$5,713,485 +$17,817,830 CGEM, ITOS, MRUS, RPTX, HARPXXXX 13F-HR 13 May 2022, 12:05
Q4 2021 33 $548,527,000 +$39,123,419 -$19,569,060 +$19,554,359 CGEM, ITOS, RPTX, MEIPXXXX, MRUS 13F-HR 11 Feb 2022, 15:37
Q3 2021 33 $644,676,000 +$155,338,310 -$13,196,043 +$142,142,267 CGEM, ITOS, RPTX, HOWL, TCRR 13F-HR 12 Nov 2021, 18:19
Q2 2021 14 $608,714,000 +$41,646,912 -$24,965,603 +$16,681,309 CGEM, ITOS, TCRR, RPTX, HARPXXXX 13F-HR 13 Aug 2021, 09:24
Q1 2021 13 $795,909,000 +$329,771,671 -$33,653,405 +$296,118,266 CGEM, HARPXXXX, ITOS, TCRR, RPTX 13F-HR 13 May 2021, 15:46
Q4 2020 13 $569,376,000 +$76,848,937 -$5,681,880 +$71,167,057 TCRR, RPTX, ITOS, ONCR, HARPXXXX 13F-HR/A 24 Feb 2021, 15:55
Q4 2020 1 $26,764 $0 13F-HR 16 Feb 2021, 05:45
Q3 2020 12 $415,058,000 $0 RPTX, TCRR, HARPXXXX, ITOS, EPZM Restatement 19 Nov 2020, 13:36
Q2 2020 1 $41,869 $0 13F-HR 12 Aug 2020, 12:12
Q1 2020 10 $163,704,000 +$13,786,009 +$13,786,009 HARPXXXX, EPZM, TCRR, GTHX, TPTX 13F-HR 13 May 2020, 12:16
Q4 2019 12 $282,172,000 $0 HARPXXXX, EPZM, TCRR, GTHX, ARQL 13F-HR 14 Feb 2020, 14:03