0001193125-15-035118.txt : 20150205 0001193125-15-035118.hdr.sgml : 20150205 20150205134801 ACCESSION NUMBER: 0001193125-15-035118 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20150205 DATE AS OF CHANGE: 20150205 GROUP MEMBERS: ANSBERT GADICKE GROUP MEMBERS: JAMES PAUL SCOPA GROUP MEMBERS: LUKE EVNIN GROUP MEMBERS: MPM ASSET MANAGEMENT INVESTORS BV4 LLC GROUP MEMBERS: MPM BIOVENTURES IV GMBH & CO. BETEILIGUNGS KG GROUP MEMBERS: MPM BIOVENTURES IV GP LLC GROUP MEMBERS: MPM BIOVENTURES IV LLC GROUP MEMBERS: MPM BIOVENTURES IV STRATEGIC FUND, L.P. GROUP MEMBERS: TODD FOLEY GROUP MEMBERS: VAUGHN M. KAILIAN SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Epizyme, Inc. CENTRAL INDEX KEY: 0001571498 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 261349956 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-87481 FILM NUMBER: 15579377 BUSINESS ADDRESS: STREET 1: 400 TECHNOLOGY SQUARE STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 617-229-5872 MAIL ADDRESS: STREET 1: 400 TECHNOLOGY SQUARE STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: MPM BioVentures IV QP LP CENTRAL INDEX KEY: 0001358309 IRS NUMBER: 204217788 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 200 CLARENDON STREET, 54TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-425-9200 MAIL ADDRESS: STREET 1: 200 CLARENDON STREET, 54TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 SC 13G/A 1 d868247dsc13ga.htm SC 13G/A SC 13G/A

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

 

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)*

 

 

EpiZyme, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

29428V104

(CUSIP Number)

December 31, 2014

(Date of Event Which Requires Filing of This Statement)

 

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

 

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

 

 


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM BioVentures IV-QP, L.P.

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Delaware

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

1,951,645

   6.   

Shared Voting Power

 

0

   7.   

Sole Dispositive Power

 

1,951,645

   8.   

Shared Dispositive Power

 

0

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

1,951,645

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

5.7%

12.  

Type of Reporting Person (See Instructions)

 

PN

 

Page 2 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM BioVentures IV GmbH & Co. Beteiligungs KG

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Germany

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

75,188

   6.   

Shared Voting Power

 

0

   7.   

Sole Dispositive Power

 

75,188

   8.   

Shared Dispositive Power

 

0

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

75,188

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

0.2%

12.  

Type of Reporting Person (See Instructions)

 

PN

 

 

Page 3 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM BioVentures IV Strategic Fund, L.P.

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Delaware

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

331,491

   6.   

Shared Voting Power

 

0

   7.   

Sole Dispositive Power

 

331,491

   8.   

Shared Dispositive Power

 

0

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

331,491

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

1.0%

12.  

Type of Reporting Person (See Instructions)

 

PN

 

Page 4 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM Asset Management Investors BV4 LLC

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Delaware

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

55,495

   6.   

Shared Voting Power

 

0

   7.   

Sole Dispositive Power

 

55,495

   8.   

Shared Dispositive Power

 

0

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

55,495

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

0.2%

12.  

Type of Reporting Person (See Instructions)

 

OO

 

Page 5 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM BioVentures IV GP LLC

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Delaware

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,358,324*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,358,324*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,358,324*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

6.9%

12.  

Type of Reporting Person (See Instructions)

 

PN

 

* The shares are held as follows: 1,951,645 by MPM BioVentures IV-QP, L.P. (“BV IV QP”), 75,188 by MPM BioVentures IV GmbH & Co. Beteiligungs KG (“BV KG”) and 331,491 by MPM BioVentures IV Strategic Fund, L.P. (“BV SF”). The Reporting Person is the direct general partner of BV IV QP, BV KG and BV SF.

 

Page 6 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

MPM BioVentures IV LLC

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

Delaware

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

OO

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by MPM Asset Management Investors BV4 LLC (“AM BV4”). The Reporting Person is the indirect general partner of BV IV QP, BV KG and BV SF and the manager of AM BV4.

 

Page 7 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

Luke Evnin

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

IN

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM BioVentures IV GP LLC (“MPM IV GP”) and MPM BioVentures IV LLC (“MPM IV LLC”) are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 8 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

Ansbert Gadicke

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

IN

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM IV GP and MPM IV LLC are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 9 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

Vaughn M. Kailian

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

IN

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM IV GP and MPM IV LLC are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 10 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

James Paul Scopa

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

IN

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM IV GP and MPM IV LLC are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 11 of 18


CUSIP No. 29428V104

 

  1.   

Name of Reporting Persons

 

Todd Foley

  2.  

Check the Appropriate Box if a Member of a Group (See Instructions)

 

(a)  ¨        (b)  x

  3.  

SEC USE ONLY

 

  4.  

Citizenship or Place of Organization

 

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

   5.    

Sole Voting Power

 

0

   6.   

Shared Voting Power

 

2,413,819*

   7.   

Sole Dispositive Power

 

0

   8.   

Shared Dispositive Power

 

2,413,819*

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

2,413,819*

10.  

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

 

¨

11.  

Percent of Class Represented by Amount in Row (9)

 

7.1%

12.  

Type of Reporting Person (See Instructions)

 

IN

 

* The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM IV GP and MPM IV LLC are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 12 of 18


Item 1.

 

  (a) Name of Issuer

EpiZyme, Inc.

 

  (b) Address of Issuer’s Principal Executive Offices

400 Technology Square

Cambridge, Massachusetts 02139

Item 2.

 

  (a) Name of Person Filing

MPM BioVentures IV-QP, L.P.

MPM BioVentures IV GmbH & Co. Beteiligungs KG

MPM Asset Management Investors BV4 LLC

MPM BioVentures IV GP LLC

MPM BioVentures IV LLC

MPM BioVentures IV Strategic Fund, L.P.

Luke Evnin

Ansbert Gadicke

Vaughn M. Kailian

James Paul Scopa

Todd Foley

 

  (b) Address of Principal Business Office or, if none, Residence

c/o MPM Capital LLC

The John Hancock Tower

200 Clarendon Street, 54th Floor

Boston, MA 02116

 

  (c) Citizenship

All entities were organized in Delaware except MPM BioVentures IV GmbH & Co. Beteiligungs KG, which was organized in Germany. The individuals are all United States citizens.

 

  (d) Title of Class of Securities

Common Stock

 

  (e) CUSIP Number

29428V104

 

Item 3. If this statement is filed pursuant to §§240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:

Not applicable

 

Page 13 of 18


Item 4. Ownership

 

  (a) Amount Beneficially Owned:

 

MPM BioVentures IV-QP, L.P.

     1,951,645   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     75,188   

MPM BioVentures IV Strategic Fund, L.P.

     331,491   

MPM Asset Management Investors BV4 LLC

     55,495   

MPM BioVentures IV GP LLC

     2,358,324 (1) 

MPM BioVentures IV LLC

     2,413,819 (2) 

Ansbert Gadicke

     2,413,819 (3) 

Luke B. Evnin

     2,413,819 (3) 

Vaughn M. Kailian

     2,413,819 (3) 

James Paul Scopa

     2,413,819 (3) 

Todd Foley

     2,413,819 (3) 

Percent of Class:

 

MPM BioVentures IV-QP, L.P.

     5.7%   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     0.2%   

MPM BioVentures IV Strategic Fund, L.P.

     1.0%   

MPM Asset Management Investors BV4 LLC

     0.2%   

MPM BioVentures IV GP LLC

     6.9%   

MPM BioVentures IV LLC

     7.1%   

Ansbert Gadicke

     7.1%   

Luke B. Evnin

     7.1%   

Vaughn M. Kailian

     7.1%   

James Paul Scopa

     7.1%   

Todd Foley

     7.1%   

 

  (b) Number of shares as to which the person has:

 

  (i) Sole power to vote or to direct the vote

 

MPM BioVentures IV-QP, L.P.

     1,951,645   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     75,188   

MPM BioVentures IV Strategic Fund, L.P.

     331,491   

MPM Asset Management Investors BV4 LLC

     55,495   

MPM BioVentures IV GP LLC

     0   

MPM BioVentures IV LLC

     0   

Ansbert Gadicke

     0   

Luke B. Evnin

     0   

Vaughn M. Kailian

     0   

James Paul Scopa

     0   

Todd Foley

     0   

 

Page 14 of 18


  (ii) Shared power to vote or to direct the vote

 

MPM BioVentures IV-QP, L.P.

     0   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     0   

MPM BioVentures IV Strategic Fund, L.P.

     0   

MPM Asset Management Investors BV4 LLC

     0   

MPM BioVentures IV GP LLC

     2,358,324 (1) 

MPM BioVentures IV LLC

     2,413,819 (2) 

Ansbert Gadicke

     2,413,819 (3) 

Luke B. Evnin

     2,413,819 (3) 

Vaughn M. Kailian

     2,413,819 (3) 

James Paul Scopa

     2,413,819 (3) 

Todd Foley

     2,413,819 (3) 

 

  (iii) Sole power to dispose or to direct the disposition of

 

MPM BioVentures IV-QP, L.P.

     1,951,645   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     75,188   

MPM BioVentures IV Strategic Fund, L.P.

     331,491   

MPM Asset Management Investors BV4 LLC

     55,495   

MPM BioVentures IV GP LLC

     0   

MPM BioVentures IV LLC

     0   

Ansbert Gadicke

     0   

Luke Evnin

     0   

Vaughn M. Kailian

     0   

James Paul Scopa

     0   

Todd Foley

     0   

 

  (iv) Shared power to dispose or to direct the disposition of

 

MPM BioVentures IV-QP, L.P.

     0   

MPM BioVentures IV GmbH & Co. Beteiligungs KG

     0   

MPM BioVentures IV Strategic Fund, L.P.

     0   

MPM Asset Management Investors BV4 LLC

     0   

MPM BioVentures IV GP LLC

     2,358,324 (1) 

MPM BioVentures IV LLC

     2,413,819 (2) 

Ansbert Gadicke

     2,413,819 (3) 

Luke B. Evnin

     2,413,819 (3) 

Vaughn M. Kailian

     2,413,819 (3) 

James Paul Scopa

     2,413,819 (3) 

Todd Foley

     2,413,819 (3) 

 

(1) The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG and 331,491 by BV SF. The Reporting Person is the direct general partner of BV IV QP, BV KG and BV SF.
(2) The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. The Reporting Person is the indirect general partner of BV IV QP, BV KG and BV SF and the manager of AM BV4.
(3) The shares are held as follows: 1,951,645 by BV IV QP, 75,188 by BV KG, 331,491 by BV SF and 55,495 by AM BV4. MPM IV GP and MPM IV LLC are the direct and indirect general partners of BV IV QP, BV KG and BV SF and MPM IV LLC is the manager of AM BV4. The Reporting Person is a member of MPM IV LLC.

 

Page 15 of 18


Item 5. Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following  ¨.

 

Item 6. Ownership of More than Five Percent on Behalf of Another Person

Not Applicable

 

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Not Applicable

 

Item 8. Identification and Classification of Members of the Group

Not Applicable

 

Item 9. Notice of Dissolution of a Group

Not Applicable

 

Item 10. Certification

Not Applicable

 

Page 16 of 18


SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 4, 2015

 

MPM BIOVENTURES IV-QP, L.P.      MPM BIOVENTURES IV GMBH & CO. BETEILIGUNGS KG

By:

 

MPM BioVentures IV GP LLC,

its General Partner

     By:   

MPM BioVentures IV GP LLC,

in its capacity as the Managing Limited Partner

By:  

MPM BioVentures IV LLC,

its Managing Member

     By:   

MPM BioVentures IV LLC,

its Managing Member

By:  

                /s/ Luke Evnin

     By:   

                /s/ Luke Evnin

 

Name: Luke Evnin

Title: Member

       

Name: Luke Evnin

Title: Member

MPM ASSET MANAGEMENT INVESTORS BV4 LLC      MPM BIOVENTURES IV STRATEGIC FUND, L.P.
By:  

MPM BioVentures IV LLC

its Manager

     By:   

MPM BioVentures IV GP LLC,

its General Partner

By:  

                /s/ Luke Evnin

     By:    MPM BioVentures IV LLC,
 

Name: Luke Evnin

Title: Member

        its Managing Member
       By:   

                /s/ Luke Evnin

      

Name:

Title:

  

Luke Evnin

Member

MPM BIOVENTURES IV GP LLC      MPM BIOVENTURES IV LLC
By:   MPM BioVentures IV LLC,      By:   

                /s/ Luke Evnin

  its Managing Member     

Name:

Title:

  

Luke Evnin

Member

By:  

                /s/ Luke Evnin

       

Name:

Title:

 

Luke Evnin

Member

       
By:  

                /s/ Luke Evnin

     By:   

                /s/ Ansbert Gadicke

  Name: Luke Evnin         Name: Ansbert Gadicke
By:  

                /s/ Vaughn M. Kailian

     By:   

                /s/ James Paul Scopa

  Name: Vaughn M. Kailian         Name: James Paul Scopa
By:  

                /s/ Todd Foley

       
  Name: Todd Foley        

EXHIBITS

 

A: Joint Filing Agreement

 

Page 17 of 18

EX-99.A 2 d868247dex99a.htm EX-A EX-A

EXHIBIT A

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock of EpiZyme, Inc. and further agree that this agreement be included as an exhibit to such filing. Each party to the agreement expressly authorizes each other party to file on its behalf any and all amendments to such statement. Each party to this agreement agrees that this joint filing agreement may be signed in counterparts.

In evidence whereof, the undersigned have caused this Agreement to be executed on their behalf this 4th day of February, 2015.

 

MPM BIOVENTURES IV-QP, L.P.

     MPM BIOVENTURES IV GMBH & CO. BETEILIGUNGS KG

By:

 

MPM BioVentures IV GP LLC,

its General Partner

     By:   

MPM BioVentures IV GP LLC,

in its capacity as the Managing Limited Partner

By:  

MPM BioVentures IV LLC,

its Managing Member

     By:   

MPM BioVentures IV LLC,

its Managing Member

By:  

                /s/ Luke Evnin

     By:   

                /s/ Luke Evnin

 

Name: Luke Evnin

Title: Member

       

Name: Luke Evnin

Title: Member

MPM ASSET MANAGEMENT INVESTORS BV4 LLC      MPM BIOVENTURES IV STRATEGIC FUND, L.P.
By:  

MPM BioVentures IV LLC

its Manager

     By:   

MPM BioVentures IV GP LLC,

its General Partner

By:  

                /s/ Luke Evnin

     By:    MPM BioVentures IV LLC,
 

Name: Luke Evnin

Title: Member

        its Managing Member
       By:   

                /s/ Luke Evnin

      

Name:

Title:

  

Luke Evnin

Member

MPM BIOVENTURES IV GP LLC      MPM BIOVENTURES IV LLC
By:   MPM BioVentures IV LLC,      By:   

                /s/ Luke Evnin

  its Managing Member     

Name:

Title:

  

Luke Evnin

Member

By:  

                /s/ Luke Evnin

       

Name:

Title:

 

Luke Evnin

Member

       
By:  

                /s/ Luke Evnin

     By:   

                /s/ Ansbert Gadicke

  Name: Luke Evnin         Name: Ansbert Gadicke
By:  

                /s/ Vaughn M. Kailian

     By:   

                /s/ James Paul Scopa

  Name: Vaughn M. Kailian         Name: James Paul Scopa
By:  

                /s/ Todd Foley

       
  Name: Todd Foley        

 

Page 18 of 18