Exhibit C
Joint Filing Statement
I, the undersigned, hereby express my agreement that the attached Schedule 13D (and any amendments thereto) relating to the beneficial ownership by the undersigned of the equity securities of TCR2 Therapeutics Inc. is filed on behalf of each of the undersigned.
Date: March 4, 2019
| MPM BIOVENTURES 2014, L.P. | ||
| By: | MPM BioVentures 2014 GP LLC, | |
| its General Partner | ||
| By: | MPM BioVentures 2014 LLC, | |
| Its Managing Member | ||
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| Title: | Managing Director | |
| MPM BIOVENTURES 2014 (B), L.P. | ||
| By: | MPM BioVentures 2014 GP LLC, | |
| its General Partner | ||
| By: | MPM BioVentures 2014 LLC, | |
| Its Managing Member | ||
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| Title: | Managing Director | |
| MPM ASSET MANAGEMENT INVESTORS BV 2014 LLC | ||
| By: | /s/ Howard Rubin | |
| Name: | Howard Rubin | |
| Title: | Director | |
| MPM ASSET MANAGEMENT LLC | ||
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| Title: | Member | |
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| MPM BIOVENTURES 2014 GP, LLC | ||
| By: | MPM BioVentures 2014 LLC, | |
| Its Managing Member | ||
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| Title: | Managing Director | |
| MPM BIOVENTURES 2014 LLC | ||
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| Title: | Managing Director | |
| MPM SUNSTATES FUND, L.P. | ||
| By: | MPM SunStates GP LLC, | |
| its General Partner | ||
| By: | MPM SunStates GP Managing Member LLC, | |
| Its Managing Member | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Member | |
| MPM SUNSTATES GP LLC | ||
| By: | MPM SunStates GP Managing Member LLC, | |
| Its Managing Member | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Member | |
| MPM SUNSTATES GP MANAGING MEMBER LLC | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Member | |
| MPM ASSET MANAGEMENT INVESTORS SUNSTATES FUND LLC | ||
| By: | /s/ Howard Rubin | |
| Name: | Howard Rubin | |
| Title: | Director | |
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| UBS ONCOLOGY IMPACT FUND, L.P. | ||
| By: | Oncology Impact Fund (Cayman) Management L.P., | |
| its General Partner | ||
| By: | MPM Oncology Impact Management LP, | |
| Its General Partner | ||
| By: | MPM Oncology Impact Management GP LLC | |
| Its General Partner | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Managing Director | |
| ONCOLOGY IMPACT FUND (CAYMAN) MANAGEMENT L.P. | ||
| By: | MPM Oncology Impact Management LP, | |
| Its General Partner | ||
| By: | MPM Oncology Impact Management GP LLC | |
| Its General Partner | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Managing Director | |
| MPM ONCOLOGY IMPACT FUND MANAGEMENT LP | ||
| By: | MPM Oncology Impact Management GP LLC | |
| Its General Partner | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Managing Director | |
| MPM ONCOLOGY IMPACT FUND MANAGEMENT GP LLC | ||
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
| Title: | Managing Director | |
| By: | /s/ Todd Foley | |
| Name: | Todd Foley | |
| By: | /s/ Luke Evnin | |
| Name: | Luke Evnin | |
| By: | /s/ Ansbert Gadicke | |
| Name: | Ansbert Gadicke | |
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