MPM BIOIMPACT LLC

PrivateCIK: 1687078

Location

BOSTON, MA

MPM BIOIMPACT LLC

13F-HR

Holdings

Aug 14, 2026·Aug 14, 2026

MICHAELSON JENNIFER

→CULLINAN THERAPEUTICS, INC.

Aug 14, 2026·Aug 14, 2026

3 txn

EVNIN LUKE

→WEREWOLF THERAPEUTICS, INC.

Jul 8, 2026·Jul 8, 2026

2 txn

MPM ONCOLOGY INNOVATIONS FUND LP

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

MPM ASSET MANAGEMENT INVESTORS BV2014 LLC

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

MPM ASSET MANAGEMENT LLC

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

UBS ONCOLOGY IMPACT FUND L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

MPM BIOVENTURES 2014 (B), L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

MPM BIOVENTURES 2014, L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jul 6, 2026·Jul 6, 2026

FENTON MARY KAY

→CULLINAN THERAPEUTICS, INC.

Jul 2, 2026·Jul 2, 2026

1 txn

EVNIN LUKE

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

1 txn

MPM ONCOLOGY INNOVATIONS FUND LP

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

MPM ASSET MANAGEMENT INVESTORS BV2014 LLC

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

MPM ASSET MANAGEMENT LLC

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

UBS ONCOLOGY IMPACT FUND L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

MPM BIOVENTURES 2014 (B), L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

MPM BIOVENTURES 2014, L.P.

144

→WEREWOLF THERAPEUTICS, INC.

Jun 29, 2026·Jun 29, 2026

RA CAPITAL MANAGEMENT, L.P.

→WEREWOLF THERAPEUTICS, INC.

Jun 22, 2026·Jun 22, 2026

2 txn

ROSENBERG ANTHONY

→CULLINAN THERAPEUTICS, INC.

Jun 18, 2026·Jun 18, 2026

1 txn

MEEK DAVID D.

→CULLINAN THERAPEUTICS, INC.

Jun 18, 2026·Jun 18, 2026

1 txn

WEBSTER STEPHEN W

→CULLINAN THERAPEUTICS, INC.

Jun 18, 2026·Jun 18, 2026

1 txn

THISTLE MARY

→CULLINAN THERAPEUTICS, INC.

Jun 18, 2026·Jun 18, 2026

1 txn

DOYLE MITTIE

→CULLINAN THERAPEUTICS, INC.

Jun 18, 2026·Jun 18, 2026

1 txn

RA CAPITAL MANAGEMENT, L.P.

→WEREWOLF THERAPEUTICS, INC.

Jun 16, 2026·Jun 16, 2026

6 txn

RA CAPITAL MANAGEMENT, L.P.

→WEREWOLF THERAPEUTICS, INC.

Jun 12, 2026·Jun 12, 2026

6 txn

Page 1 of 18 · 427 total

Filer	Form	Target	Filed	Activity
MPM BIOIMPACT LLCCIK · 1687078	13F-HR Holdings	—	Aug 14, 2026 Aug 14, 2026	—
MICHAELSON JENNIFERCIK · 1838061	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Aug 14, 2026 Aug 14, 2026	3txn
EVNIN LUKECIK · 1134657	4 Trade	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 8, 2026 Jul 8, 2026	2txn
MPM ONCOLOGY INNOVATIONS FUND LPCIK · 1719960	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
MPM ASSET MANAGEMENT INVESTORS BV2014 LLCCIK · 1609495	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
MPM ASSET MANAGEMENT LLCCIK · 1263048	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
UBS ONCOLOGY IMPACT FUND L.P.CIK · 1691428	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
MPM BIOVENTURES 2014 (B), L.P.CIK · 1609493	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
MPM BIOVENTURES 2014, L.P.CIK · 1609492	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jul 6, 2026 Jul 6, 2026	—
FENTON MARY KAYCIK · 1378589	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jul 2, 2026 Jul 2, 2026	1txn
EVNIN LUKECIK · 1134657	4 Trade	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	1txn
MPM ONCOLOGY INNOVATIONS FUND LPCIK · 1719960	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
MPM ASSET MANAGEMENT INVESTORS BV2014 LLCCIK · 1609495	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
MPM ASSET MANAGEMENT LLCCIK · 1263048	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
UBS ONCOLOGY IMPACT FUND L.P.CIK · 1691428	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
MPM BIOVENTURES 2014 (B), L.P.CIK · 1609493	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
MPM BIOVENTURES 2014, L.P.CIK · 1609492	144 Sale	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 29, 2026 Jun 29, 2026	—
RA CAPITAL MANAGEMENT, L.P.CIK · 1346824	4 Trade	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 22, 2026 Jun 22, 2026	2txn
ROSENBERG ANTHONYCIK · 1466175	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jun 18, 2026 Jun 18, 2026	1txn
MEEK DAVID D.CIK · 1555337	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jun 18, 2026 Jun 18, 2026	1txn
WEBSTER STEPHEN WCIK · 1438421	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jun 18, 2026 Jun 18, 2026	1txn
THISTLE MARYCIK · 1317917	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jun 18, 2026 Jun 18, 2026	1txn
DOYLE MITTIECIK · 1918845	4 Trade	CULLINAN THERAPEUTICS, INC.CIK · 1789972	Jun 18, 2026 Jun 18, 2026	1txn
RA CAPITAL MANAGEMENT, L.P.CIK · 1346824	4 Trade	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 16, 2026 Jun 16, 2026	6txn
RA CAPITAL MANAGEMENT, L.P.CIK · 1346824	4 Trade	WEREWOLF THERAPEUTICS, INC.CIK · 1785530	Jun 12, 2026 Jun 12, 2026	6txn

Page 1 of 18 · 427 total