13G Filing: Tourbillon Capital Partners and Radius Health, Inc. (RDUS)

Page 4 of 7 SEC Filing

Item 1(a). Name of Issuer:
Radius Health, Inc. (the “Issuer”)
Item 1(b). Address of Issuer’s Principal Executive Offices:
950 Winter Street
Waltham, Massachusetts 02451
Item 2(a). Name of Persons Filing:
The names of the persons filing this statement on Schedule 13G are Tourbillon Capital Partners, L.P. (“Tourbillon Capital Partners”) and Jason H. Karp (together, the “Reporting Persons”). Mr. Karp is the Chief Executive Officer of Tourbillon Capital Partners.
Item 2(b). Address of Principal Business Office or, if None, Residence:
The address of the principal business office of each of the Reporting Persons is 444 Madison Avenue, 26th Floor, New York, NY 10022.
Item 2(c). Citizenship:
Tourbillon Capital Partners is a Delaware limited partnership. Mr. Karp is a citizen of the United States of America.
Item 2(d). Title of Class of Securities:
Common Stock, $.0001 par value (the “Common Shares”)
Item 2(e). CUSIP Number:
750469 20 7
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)
[ ]
Broker or dealer registered under Section 15 of the Exchange Act.
(b)
[ ]
Bank as defined in Section 3(a)(6) of the Exchange Act.
(c)
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Insurance company defined in Section 3(a)(19) of the Exchange Act.
(d)
[ ]
Investment company registered under Section 8 of the Investment Company Act.
(e)
[ ]
Investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E).
(f)
[ ]
Employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F).
(g)
[ ]
Parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G).
(h)
[ ]
Savings association as defined in Section 3(b) of the Federal Deposit Insurance Act.
(i)
[ ]
Church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
(j)
[ ]
Non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J).
(k)
[ ]
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).  If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____

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