Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Kollender Richard S
2. Date of Event Requiring Statement (Month/Day/Year)
01/12/2011
3. Issuer Name and Ticker or Trading Symbol
INSMED INC [INSM]
(Last)
(First)
(Middle)
C/O INSMED INCORPORATED, 8720 STONY POINT PKWY, SUITE 200
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

RICHMOND, VA 23235
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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)
Common Stock 4,826,953
I (1)
Issued to Quaker BioVentures II, L.P. in connection with the Merger. Richard Kollender is a partner (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units   (2)   (2) Common Stock (3) 54,687.5 $ (2) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Kollender Richard S
C/O INSMED INCORPORATED
8720 STONY POINT PKWY, SUITE 200
RICHMOND, VA 23235
  X      

Signatures

/s/ Richard Kollender 01/19/2011
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Mr. Kollender disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein, if any.
(2) The RSU's have a one year cliff vesting period, provided that the director attends at least 75% of the meetings of the Board.
(3) The RSU's will be settled in a lump sum cash payment upon vesting; provided, however, that if the Company's shareholders approve an amendment to the Company's Amended & Restated 2000 Stock Incentive Plan to increase the number of shares of common stock that may be issued under the plan or additional shares become available to the plan through stock option expirations and/or employee terminations, the Company may settle the RSU's in shares of common stock in lieu of cash.

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