SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Flynn James E

(Last)

(First)

(Middle)

780 THIRD AVENUE

37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/29/2014

3. Issuer Name and Ticker or Trading Symbol
Dicerna Pharmaceuticals Inc [ DRNA ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Series C Preferred Stock	⁽¹⁾	⁽¹⁾	Common Stock	196,071	⁽¹⁾	I⁽²⁾	Through Deerfield Special Situations Fund, L.P.⁽³⁾
Series C Preferred Stock	⁽¹⁾	⁽¹⁾	Common Stock	161,071	⁽¹⁾	I⁽²⁾	Through Deerfield Special Situations International Master Fund, L.P.⁽³⁾
Series C Preferred Stock	⁽¹⁾	⁽¹⁾	Common Stock	499,285	⁽¹⁾	I⁽²⁾	Through Deerfield Private Design Fund II, L.P.⁽³⁾
Series C Preferred Stock	⁽¹⁾	⁽¹⁾	Common Stock	572,142	⁽¹⁾	I⁽²⁾	Through Deerfield Private Design International II, L.P.⁽³⁾

1. Name and Address of Reporting Person^*

Flynn James E

(Last)

(First)

(Middle)

780 THIRD AVENUE

37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

Deerfield Mgmt L.P.

(Last)

(First)

(Middle)

780 THIRD AVENUE

37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

DEERFIELD MANAGEMENT CO

(Last)

(First)

(Middle)

780 THIRD AVENUE, 37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

Deerfield Special Situations Fund, L.P.

(Last)

(First)

(Middle)

780 3RD AVENUE

37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

Deerfield Special Situations International Master Fund, L.P.

(Last)

(First)

(Middle)

780 THIRD AVENUE, 37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

Deerfield Private Design Fund II, L.P.

(Last)

(First)

(Middle)

780 THIRD AVENUE, 37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

1. Name and Address of Reporting Person^*

Deerfield Private Design International II, Ltd.

(Last)

(First)

(Middle)

780 THIRD AVENUE, 37TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)	X	Other (specify below)
		Possible Member of 10% Group

Explanation of Responses:

1. The Series C Preferred Stock is convertible at any time into the Issuer's Common Stock, on a one-for-one basis and has no expiration date. The Series C Preferred Stock is to convert into shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering of Common Stock.

2. This Form 3 is being filed by the undersigned as well as the entities listed on the Joint Filer Information Statement attached as an exhibit hereto (the "Reporting Persons").

3. Deerfield Mgmt, L.P. is the general partner of Deerfield Special Situations Fund, L.P., Deerfield Special Situations International Master Fund, L.P., Deerfield Private Design Fund II, L.P. and Deerfield Private Design International, L.P. (collectively, the "Funds"). Deerfield Management Company, L.P. is the investment manager of the Funds. James E. Flynn is the sole member of the general partner of each of Deerfield Mgmt, L.P. and Deerfield Management Company, L.P. In accordance with Instruction 5 (b)(iv) to Form 3, the entire amount of the Issuer's securities held by the Funds is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Remarks:

Jonathan Isler, Attorney-in-Fact: Power of Attorney, which is hereby incorporated by reference to Exhibit 24 to a Form 4 with regard to Talon Therapeutics, Inc. filed with the Securities and Exchange Commission on August 21, 2012 by Deerfield Mgmt L.P., Deerfield Management Company, L.P., Deerfield Special Situations Fund, L.P., Deerfield Special Situations Fund International, Limited, Deerfield Private Design Fund, L.P., Deerfield Private Design International, L.P. and James E. Flynn.

	/s/ Jonathan Isler	01/29/2014
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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