Blueprint Medicines Corp (BPMC) Stock: Deerfield Management Reports New 4.51% Stake

A new 13G filing with the Securities and Exchange Commission revealed that James E. Flynn‘s Deerfield Management has acquired 1.23 million common shares of Blueprint Medicines Corp (NASDAQ:BPMC), which represent 4.51% of the company’s stock. The acquisition represents a new addition to Deerfield Management’s portfolio.

Blueprint Medicines Corp (NASDAQ:BPMC) is a biopharmaceutical company that works to discover therapies to help people who suffer from genomically defined diseases induced by abnormal kinase activation. Over the past 12 months, the company’s shares have gained 65.51%. For the second quarter of 2016, the company reported collaboration revenue of $7.07 million, and a loss per share of $0.70, compared to revenue of $2.69 million and a loss per share of $0.81 for the corresponding quarter in 2015.

James Flynn Deerfield Management

Out of the 749 hedge funds followed by Insider Monkey which filed 13Fs for the June quarter, 12 were bullish on Blueprint Medicines Corp (NASDAQ:BPMC) at the end of June, up by one from the end of March. Some of the largest positions in the company on June 30 were held by Richard Driehaus’ Driehaus Capital (760,303 shares), Eli Casdin’s Casdin Capital (340,000 shares), and James A. Silverman’s Opaleye Management (250,000 shares).

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You can access the original SEC filing by clicking here.

Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
Deerfield Mgmt 0 1,231,343 0 1,231,343 1,231,343 4.51%
Deerfield Management Company 0 1,231,343 0 1,231,343 1,231,343 4.51%
Deerfield Partners 0 539,328 0 539,328 539,328 1.98%
Deerfield International Master Fund 0 692,015 0 692,015 692,015 2.54%

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Page 1 of 12 – SEC Filing

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
SCHEDULE 13G
(Rule 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)
(Amendment No. ) *
Blueprint Medicines Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)
09627Y109

(CUSIP Number)
October 20, 2016

(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
          o Rule 13d-1(b)
          x Rule 13d-1(c)
          o Rule 13d-1(d)
(Page 1 of 10 Pages)
———-
* 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 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).

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Page 2 of 12 – SEC Filing

CUSIP No.
09627Y109
13G
Page 2 of 10 Pages
 
1.
NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Deerfield Mgmt, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a) o
  (b) ý
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
 
1,231,343 (1)
7.
SOLE DISPOSITIVE POWER
 
0
8.
SHARED DISPOSITIVE POWER
 
1,231,343 (1)
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,231,343 (1)
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
o
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
4.51%
12.
TYPE OF REPORTING PERSON*
 
PN
(1) Comprised of shares of common stock held by Deerfield Partners, L.P. and Deerfield International Master Fund, L.P., of which Deerfield Mgmt, L.P. is the general partner.
 

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Page 3 of 12 – SEC Filing

CUSIP No.
09627Y109
13G
Page 3 of 10 Pages
 
1.
NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Deerfield Management Company, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a) o
  (b) ý
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
 
1,231,343 (2)
7.
SOLE DISPOSITIVE POWER
 
0
8.
SHARED DISPOSITIVE POWER
 
1,231,343 (2)
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,231,343 (2)
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
o
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
4.51%
12.
TYPE OF REPORTING PERSON*
 
PN
 
(2) Comprised of shares of common stock held by Deerfield Partners, L.P. and Deerfield International Master Fund, L.P., of which Deerfield Management Company, L.P. is the investment advisor.

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Page 4 of 12 – SEC Filing

CUSIP No.
09627Y109
13G
Page 4 of 10 Pages
 
1.
NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Deerfield Partners, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a) o
  (b) ý
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
 
539,328
7.
SOLE DISPOSITIVE POWER
 
0
8.
SHARED DISPOSITIVE POWER
 
539,328
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
539,328
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
o
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
1.98%
12.
TYPE OF REPORTING PERSON*
 
PN

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Page 5 of 12 – SEC Filing

 
CUSIP No.
09627Y109
13G
Page 5 of 10 Pages
 
1.
NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Deerfield International Master Fund, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
  (a) o
  (b) ý
3.
SEC USE ONLY
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
British Virgin Islands


NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH
5.
SOLE VOTING POWER
 
0
6.
SHARED VOTING POWER
 
692,015
7.
SOLE DISPOSITIVE POWER
 
0
8.
SHARED DISPOSITIVE POWER
 
692,015
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
692,015
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
o
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.54%
12.
TYPE OF REPORTING PERSON*
 
PN
    

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Page 6 of 12 – SEC Filing

Item 1(a). Name of Issuer:
Blueprint Medicines Corporation
Item 1(b). Address of Issuer’s Principal Executive Offices:
38 Sidney Street, Suite 200
Cambridge, MA 02139
Item 2(a). Name of Person Filing:
James E. Flynn, Deerfield Mgmt, L.P., Deerfield Management Company, L.P., Deerfield Partners, L.P. and Deerfield International Master Fund, L.P.
Item 2(b). Address of Principal Business Office, or if None, Residence:
James E. Flynn, Deerfield Mgmt, L.P., Deerfield Management Company, L.P., Deerfield Partners, L.P., Deerfield International Master Fund, L.P. 780 Third Avenue, 37th Floor, New York, NY 10017
Item 2(c). Citizenship:
   
Deerfield Mgmt, L.P., Deerfield Management Company, L.P. and Deerfield Partners, L.P. – Delaware limited partnerships;
Deerfield International Master Fund, L.P. – British Virgin Islands limited partnership;
James E. Flynn – United States citizen
Item 2(d). Title of Class of Securities:
Common Stock
Item 2(e). CUSIP Number:
09627Y109
Item 3.
If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a:
 
(a)    o Broker or dealer registered under Section 15 of the Exchange Act.
       
(b)    o Bank as defined in Section 3(a)(6) of the Exchange Act. 
       
(c)    o Insurance company as defined in Section 3(a)(19) of the Exchange Act.
       
(d)    o Investment company registered under Section 8 of the Investment Company Act.
 
(e)    o An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
       
(f)    o An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
 

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Page 7 of 12 – SEC Filing

CUSIP No.
09627Y109
13G
Page 8 of 10 Pages
(g)    o A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
       
(h)    o A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;
(i)    o A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
(j)    o
A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);
 
k)    o
Group, in accordance with Rule 13d-1(b)(1)(ii)(K).
 
If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please specify the type of institution: _________________
 
Item 4.      Ownership. 
 
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
 
(a)
Amount beneficially owned**:
Deerfield Mgmt, L.P. –  1,231,343 shares
Deerfield Management Company, L.P. –  1,231,343 shares
Deerfield Partners, L.P. –  539,328 shares
Deerfield International Master Fund, L.P. –  692,015 shares
James E. Flynn –  1,231,343 shares
(b)
Percent of class**:
Deerfield Mgmt, L.P. – 4.51%
Deerfield Management Company, L.P. – 4.51%
Deerfield Partners, L.P. – 1.98%
Deerfield International Master Fund, L.P. – 2.54%
James E. Flynn – 4.51%
 
(c)
Number of shares as to which such person has**:
(i)
Sole power to vote or to direct the vote
All Reporting Persons – 0
(ii)
Shared power to vote or to direct the vote
Deerfield Mgmt, L.P. –  1,231,343
Deerfield Management Company, L.P. –  1,231,343
Deerfield Partners, L.P. –   539,328
Deerfield International Master Fund, L.P. –  692,015
James E. Flynn –  1,231,343
      
(iii)
Sole power to dispose or to direct the disposition of
All Reporting Persons – 0
(iv)
Shared power to dispose or to direct the disposition of
Deerfield Mgmt, L.P. –  1,231,343
Deerfield Management Company, L.P. –  1,231,343
Deerfield Partners, L.P. –   539,328
Deerfield International Master Fund, L.P. –  692,015
James E. Flynn –  1,231,343
 
**See footnotes on cover pages which are incorporated by reference herein.
 

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Page 8 of 12 – SEC Filing

 
CUSIP No.
09627Y109
13G
Page 9 of 10 Pages
 
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 x.
 
 
 
Item 6.
Ownership of More Than Five Percent on Behalf of Another Person.
 
     If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than five percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
 
N/A
 
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
 
     If a parent holding company or Control person has filed this schedule, pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company or control person has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
 
N/A

 

Item 8.
Identification and Classification of Members of the Group.
 
     If a group has filed this schedule pursuant to ss.240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to ss.240.13d-1(c) or ss.240.13d-1(d), attach an exhibit stating the identity of each member of the group.
 
See Exhibit B
 
Item 9.
Notice of Dissolution of Group.
 
     Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5.
 
N/A
 
Item 10.
Certifications.
 
         “By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under §240.14a–11.”
   

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Page 9 of 12 – SEC Filing

CUSIP No.
09627Y109
13G
Page 10 of 10 Pages
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.
DEERFIELD MGMT, L.P.
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler
      Jonathan Isler, Attorney-In-Fact
DEERFIELD MANAGEMENT COMPANY, L.P.
By:  Flynn Management LLC, General Partner
By: /s/ Jonathan Isler
      Jonathan Isler, Attorney-In-Fact
DEERFIELD PARTNERS, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler
      Jonathan Isler, Attorney-In-Fact
DEERFIELD INTERNATIONAL MASTER FUND, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner
By: /s/ Jonathan Isler
      Jonathan Isler, Attorney-In-Fact
JAMES E. FLYNN
 
/s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
Date:  October 25, 2016
 

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Page 10 of 12 – SEC Filing

 
Exhibit List
Exhibit A .  Joint Filing Agreement.
Exhibit B.  Item 8 Statement.
Exhibit C.(1) Power of Attorney.
(1)  Power of Attorney previously filed as Exhibit 24 to a Form 3 with regard to Editas Medicine, Inc. filed with the Securities and Exchange Commission on February 2, 2016 by Deerfield Mgmt III, L.P., Deerfield Management Company, L.P., Deerfield Healthcare Innovations Fund, L.P., Deerfield Mgmt HIF, L.P., Deerfield Private Design Fund III, L.P. and James E. Flynn.

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Page 11 of 12 – SEC Filing

 
Exhibit A
Agreement
The undersigned agree that this Schedule 13G, and all amendments thereto, relating to the Common Stock of Blueprint Medicines Corporation shall be filed on behalf of the undersigned.
DEERFIELD MGMT, L.P.
By: J.E. Flynn Capital, LLC, General Partner

 By: /s/ Jonathan Isler

      Jonathan Isler, Attorney-In-Fact
DEERFIELD MANAGEMENT COMPANY, L.P.
By:  Flynn Management LLC, General Partner

 By: /s/ Jonathan Isler

      Jonathan Isler, Attorney-In-Fact
DEERFIELD PARTNERS, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner

 By: /s/ Jonathan Isler

      Jonathan Isler, Attorney-In-Fact
DEERFIELD INTERNATIONAL MASTER FUND, L.P.
By: Deerfield Mgmt, L.P., General Partner
By: J.E. Flynn Capital, LLC, General Partner

 By: /s/ Jonathan Isler

      Jonathan Isler, Attorney-In-Fact
 
JAMES E. FLYNN
/s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
 

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Page 12 of 12 – SEC Filing

 
Exhibit B
Due to the relationships between them, the reporting persons hereunder may be deemed to constitute a “group” with one another for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934.

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