MPM BioVentures 2014, L.P.

13D and 13G Filings

13D/G filings: 13D on 4 securities
Location: Cambridge, MA
CIK: 0001609492
Form D filings: 3 filings
All SEC filings: View on sec.gov

Issuer	Symbol	CUSIP	% of Class	Shares	Form	Filed
Entrada Therapeutics, Inc. 13D/A Amendment 1 TRDA · 29384C108	TRDA	29384C108	9.9%	3,885,115	13D/A Amendment 1	9/10/2026 Event 9/8/2026
MPM BioVentures 2014, L.P.			4.5%	1,764,167
MPM BioVentures 2014 (B), L.P.			0.3%	117,667
MPM Asset Management Investors BV2014 LLC			0.2%	60,722
MPM BioVentures 2014 GP LLC			4.8%	1,881,834
MPM BioVentures 2014 LLC			5.0%	1,942,556
MPM Bioventures 2018, L.P.			4.7%	1,810,592
MPM Bioventures 2018 (B), L.P.			0.2%	96,232
MPM Asset Management Investors BV2018 LLC			0.1%	35,735
MPM BioVentures 2018 GP LLC			4.9%	1,906,824
MPM BioVentures 2018 LLC			5.0%	1,942,559
Ansbert Gadicke			9.9%	3,885,115
Luke Evnin			9.9%	3,885,115
Todd Foley			9.9%	3,885,115
Werewolf Therapeutics, Inc. 13D/A Amendment 7 HOWL · 95075A107	HOWL	95075A107	3.8%	1,826,646	13D/A Amendment 7	5/12/2026 Event 5/8/2026
MPM BioVentures 2014, L.P.			1.6%	792,254
MPM BioVentures 2014 (B), L.P.			0.1%	52,840
MPM Asset Management Investors BV2014 LLC			0.1%	27,267
UBS Oncology Impact Fund L.P.			1.3%	655,471
MPM BioVentures 2014 GP LLC			1.7%	845,094
MPM BioVentures 2014 LLC			1.8%	872,361
Oncology Impact Fund (Cayman) Management L.P.			1.3%	655,471
MPM BioImpact LLC			1.3%	655,471
Ansbert Gadicke			3.8%	1,826,646
Luke Evnin			2.4%	1,171,175
Todd Foley			1.8%	872,361
MPM Asset Management LLC			0.3%	125,480
MPM Oncology Innovations Fund LP			0.4%	173,334
MPM Oncology Innovations Fund GP LLC			0.4%	173,334
Werewolf Therapeutics, Inc. 13D/A Amendment 6 HOWL · 95075A107	HOWL	95075A107	5.4%	2,608,501	13D/A Amendment 6	5/5/2026 Event 5/1/2026
MPM BioVentures 2014, L.P.			2.3%	1,131,359
MPM BioVentures 2014 (B), L.P.			0.2%	75,458
MPM Asset Management Investors BV2014 LLC			0.1%	38,939
UBS Oncology Impact Fund L.P.			1.9%	936,031
MPM BioVentures 2014 GP LLC			2.5%	1,206,817
MPM BioVentures 2014 LLC			2.6%	1,245,756
Oncology Impact Fund (Cayman) Management L.P.			1.9%	936,031
MPM BioImpact LLC			1.9%	936,031
Ansbert Gadicke			5.4%	2,608,501
Luke Evnin			3.4%	1,672,470
Todd Foley			2.6%	1,245,756
MPM Asset Management LLC			0.4%	179,188
MPM Oncology Innovations Fund LP			0.5%	247,526
MPM Oncology Innovations Fund GP LLC			0.5%	247,526
Werewolf Therapeutics, Inc. 13D/A Amendment 5 HOWL · 95075A107	HOWL	95075A107	6.9%	3,368,670	13D/A Amendment 5	1/16/2026 Event 1/14/2026
MPM BioVentures 2014, L.P.			3.0%	1,461,054
MPM BioVentures 2014 (B), L.P.			0.2%	97,450
MPM Asset Management Investors BV2014 LLC			0.1%	50,289
UBS Oncology Impact Fund L.P.			2.5%	1,208,810
MPM BioVentures 2014 GP LLC			3.2%	1,558,504
MPM BioVentures 2014 LLC			3.3%	1,608,793
Oncology Impact Fund (Cayman) Management L.P.			2.5%	1,208,810
MPM BioImpact LLC			2.5%	1,208,810
Ansbert Gadicke			6.9%	3,368,670
Luke Evnin			4.4%	2,159,860
Todd Foley			3.3%	1,608,793
MPM Asset Management LLC			0.5%	231,408
MPM Oncology Innovations Fund LP			0.7%	319,659
MPM Oncology Innovations Fund GP LLC			0.7%	319,659
Werewolf Therapeutics, Inc. 13D/A Amendment 4 HOWL · 95075A107	HOWL	95075A107	8.2%	3,977,612	13D/A Amendment 4	12/29/2025 Event 12/22/2025
MPM BioVentures 2014, L.P.			3.6%	1,725,184
MPM BioVentures 2014 (B), L.P.			0.2%	115,066
MPM Asset Management Investors BV2014 LLC			0.1%	59,379
UBS Oncology Impact Fund L.P.			2.9%	1,426,938
MPM BioVentures 2014 GP LLC			3.8%	1,840,250
MPM BioVentures 2014 LLC			3.9%	1,899,629
Oncology Impact Fund (Cayman) Management L.P.			2.9%	1,426,938
MPM BioImpact LLC			2.9%	1,426,938
Ansbert Gadicke			8.2%	3,977,612
Luke Evnin			5.3%	2,550,674
Todd Foley			3.9%	1,899,629
MPM Asset Management LLC			0.6%	273,218
MPM Oncology Innovations Fund LP			0.8%	377,827
MPM Oncology Innovations Fund GP LLC			0.8%	377,827
Werewolf Therapeutics, Inc. 13D/A Amendment 3 HOWL · 95075A107	HOWL	95075A107	10.0%	4,867,341	13D/A Amendment 3	12/3/2025 Event 12/1/2025
MPM BioVentures 2014, L.P.			4.3%	2,111,105
MPM BioVentures 2014 (B), L.P.			0.3%	140,807
MPM Asset Management Investors BV2014 LLC			0.1%	72,664
UBS Oncology Impact Fund L.P.			3.6%	1,745,647
MPM BioVentures 2014 GP LLC			4.6%	2,251,912
MPM BioVentures 2014 LLC			4.8%	2,324,576
Oncology Impact Fund (Cayman) Management L.P.			3.6%	1,745,647
MPM BioImpact LLC			3.6%	1,745,647
Ansbert Gadicke			10.0%	4,867,341
Luke Evnin			6.4%	3,121,694
Todd Foley			4.8%	2,324,576
MPM Asset Management LLC			0.7%	334,302
MPM Oncology Innovations Fund LP			1.0%	462,816
MPM Oncology Innovations Fund GP LLC			1.0%	462,816
Werewolf Therapeutics, Inc. 13D/A Amendment 2 HOWL · 95075A107	HOWL	95075A107	11.3%	5,481,539	13D/A Amendment 2	11/17/2025 Event 11/13/2025
MPM BioVentures 2014, L.P.			4.9%	2,377,515
MPM BioVentures 2014 (B), L.P.			0.3%	158,577
MPM Asset Management Investors BV2014 LLC			0.2%	81,832
UBS Oncology Impact Fund L.P.			4.0%	1,965,659
MPM BioVentures 2014 GP LLC			5.2%	2,536,092
MPM BioVentures 2014 LLC			5.4%	2,617,924
Oncology Impact Fund (Cayman) Management L.P.			4.0%	1,965,659
MPM BioImpact LLC			4.0%	1,965,659
Ansbert Gadicke			11.3%	5,481,539
Luke Evnin			7.2%	3,515,880
Todd Foley			5.4%	2,617,924
MPM Asset Management LLC			0.8%	376,471
MPM Oncology Innovations Fund LP			1.1%	521,485
MPM Oncology Innovations Fund GP LLC			1.1%	521,485
Werewolf Therapeutics, Inc. 13D/A Amendment 1 HOWL · 95075A107	HOWL	95075A107	13.4%	6,147,610	13D/A Amendment 1	11/4/2025 Event 10/31/2025
MPM BioVentures 2014, L.P.			5.8%	2,666,424
MPM BioVentures 2014 (B), L.P.			0.4%	177,846
MPM Asset Management Investors BV2014 LLC			0.2%	91,778
UBS Oncology Impact Fund L.P.			4.8%	2,204,251
MPM BioVentures 2014 GP LLC			6.2%	2,844,270
MPM BioVentures 2014 LLC			6.4%	2,936,048
Oncology Impact Fund (Cayman) Management L.P.			4.8%	2,204,251
MPM BioImpact LLC			4.8%	2,204,251
Ansbert Gadicke			13.4%	6,147,610
Luke Evnin			8.6%	3,943,359
Todd Foley			6.4%	2,936,048
MPM Asset Management LLC			0.9%	422,201
MPM Oncology Innovations Fund LP			1.3%	585,110
MPM Oncology Innovations Fund GP LLC			1.3%	585,110
iTeos Therapeutics, Inc. 13D/A Amendment 4 ITOS · 46565G104	ITOS	46565G104	4.7%	1,803,996	13D/A Amendment 4	5/15/2025 Event 5/13/2025
MPM BioVentures 2014, L.P.			1.6%	621,312
MPM BioVentures 2014 (B), L.P.			0.1%	39,135
MPM Asset Management Investors BV2014 LLC			0.1%	21,385
MPM Bioventures 2018, L.P.			1.0%	392,407
MPM Bioventures 2018 (B), L.P.			0.1%	19,697
MPM Asset Management Investors BV2018 LLC			0%	7,749
UBS Oncology Impact Fund L.P.			1.8%	702,311
MPM BioVentures 2014 GP LLC			1.7%	660,447
MPM BioVentures 2014 LLC			1.8%	681,832
MPM BioVentures 2018 GP LLC			1.1%	412,104
MPM BioVentures 2018 LLC			1.1%	419,853
Oncology Impact Fund (Cayman) Management L.P.			1.8%	702,311
MPM BioImpact LLC			1.8%	702,311
Ansbert Gadicke			4.7%	1,803,996
Luke Evnin			2.9%	1,101,685
Todd Foley			2.9%	1,101,685
Repare Therapeutics Inc. 13D/A Amendment 7 RPTX · 760273102	RPTX	760273102	4.6%	1,941,242	13D/A Amendment 7	1/31/2025 Event 1/31/2025
MPM BioVentures 2014, L.P.			2.4%	1,018,345
MPM BioVentures 2014 (B), L.P.			0.2%	67,921
MPM Asset Management Investors BV2014 LLC			0.1%	35,052
UBS Oncology Impact Fund L.P.			1.9%	819,924
MPM BioVentures 2014 GP LLC			2.6%	1,086,266
MPM BioVentures 2014 LLC			2.6%	1,121,318
Oncology Impact Fund (Cayman) Management L.P.			1.9%	819,924
MPM BioImpact LLC			1.9%	819,924
Ansbert Gadicke			4.6%	1,941,242
Luke Evnin			2.6%	1,121,318
Todd Foley			2.6%	1,121,318
Repare Therapeutics Inc. 13D/A Amendment 6 RPTX · 760273102	RPTX	760273102	5.1%	2,149,415	13D/A Amendment 6	1/15/2025 Event 1/13/2025
MPM BioVentures 2014, L.P.			2.7%	1,127,549
MPM BioVentures 2014 (B), L.P.			0.2%	75,206
MPM Asset Management Investors BV2014 LLC			0.1%	38,809
UBS Oncology Impact Fund L.P.			2.1%	907,851
MPM BioVentures 2014 GP LLC			2.8%	1,202,755
MPM BioVentures 2014 LLC			2.9%	1,241,564
Oncology Impact Fund (Cayman) Management L.P.			2.1%	907,851
MPM BioImpact LLC			2.1%	907,851
Ansbert Gadicke			5.1%	2,149,415
Luke Evnin			2.9%	1,241,564
Todd Foley			2.9%	1,241,564
Repare Therapeutics Inc. 13D/A Amendment 5 RPTX · 760273102	RPTX	760273102	6.3%	2,658,532	13D/A Amendment 5	1/6/2025 Event 1/2/2025
MPM BioVentures 2014, L.P.			3.3%	1,394,624
MPM BioVentures 2014 (B), L.P.			0.2%	93,019
MPM Asset Management Investors BV2014 LLC			0.1%	48,001
UBS Oncology Impact Fund L.P.			2.6%	1,122,888
MPM BioVentures 2014 GP LLC			3.5%	1,487,643
MPM BioVentures 2014 LLC			3.6%	1,535,644
Oncology Impact Fund (Cayman) Management L.P.			2.6%	1,122,888
MPM BioImpact LLC			2.6%	1,122,888
Ansbert Gadicke			6.3%	2,658,532
Luke Evnin			3.6%	1,535,644
Todd Foley			3.6%	1,535,644
Repare Therapeutics Inc. 13D/A Amendment 4 RPTX · 760273102	RPTX	760273102	7.8%	3,300,856	13D/A Amendment 4	12/26/2024 Event 12/20/2024
MPM BioVentures 2014, L.P.			4.1%	1,731,575
MPM BioVentures 2014 (B), L.P.			0.3%	115,492
MPM Asset Management Investors BV2014 LLC			0.1%	59,603
UBS Oncology Impact Fund L.P.			3.3%	1,394,186
MPM BioVentures 2014 GP LLC			4.3%	1,847,067
MPM BioVentures 2014 LLC			4.5%	1,906,670
Oncology Impact Fund (Cayman) Management L.P.			3.3%	1,394,186
MPM BioImpact LLC			3.3%	1,394,186
Ansbert Gadicke			7.8%	3,300,856
Luke Evnin			4.5%	0
Todd Foley			4.5%	1,906,670

Includes filings since 12/18/2024, when the SEC began requiring structured 13D and 13G data.