Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
Clarus Lifesciences II, L.P.
   2. Issuer Name and Ticker or Trading Symbol
NanoString Technologies Inc [NSTG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O OF CLARUS VENTURES, LLC, 101 MAIN STREET, SUITE 1210		 3. Date of Earliest Transaction (Month/Day/Year)
01/01/2015
(Street)

CAMBRIDGE, MA 02142		 4. If Amendment, Date 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
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) $ 13.93 01/01/2015   A   7,307     (1) 12/31/2024 Common Stock 7,307 $ 0 7,307 I See footnotes (2) (3) (4)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Clarus Lifesciences II, L.P.
C/O OF CLARUS VENTURES, LLC
101 MAIN STREET, SUITE 1210
CAMBRIDGE, MA 02142		     X    
Clarus Ventures II GP, L.P.
C/O OF CLARUS VENTURES, LLC
101 MAIN STREET, SUITE 1210
CAMBRIDGE, MA 02142		     X    
Clarus Ventures II, LLC
C/O OF CLARUS VENTURES, LLC
101 MAIN STREET, SUITE 1210
CAMBRIDGE, MA 02142		     X    

Signatures

 /s/ Barbara A. Mery, Attorney-in-fact   01/05/2015
**Signature of Reporting Person Date
 Barbara A. Mery, Attorney-in-fact   01/03/2014
**Signature of Reporting Person Date
 Barbara A. Mery, Attorney-in-fact   01/03/2014
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) 100% of the shares subject to the Option vest on the one year anniversary of January 1, 2015. The vesting of shares subject to the Option will accelerate in full upon a "change in control" as defined in the 2013 Equity Incentive Plan.
(2) These shares were awarded to Nicholas Galakatos, a member of the board of directors of the Issuer and an affiliate of the Reporting Persons. In accordance with the internal policies of Clarus Ventures, the options received by Dr. Galakatos must be held for the benefit of Clarus Ventures and its affiliates.
(3) Clarus Ventures II GP, L.P. (the "GPLP"), as the sole general partner of Clarus Lifesciences II, L.P. ("Clarus"), may be deemed to beneficially own certain of the shares held of record by Clarus. The GPLP disclaims beneficial ownership of all shares held of record by Clarus in which the GPLP does not have an actual pecuniary interest. Clarus Ventures II, LLC (the "GPLLC"), as the sole general partner of the GPLP, may be deemed to beneficially own certain of the shares held of record by Clarus. The GPLLC disclaims beneficial ownership of all shares held of record by Clarus in which it does not have an actual pecuniary interest. Each of Nicholas Galakatos, a member of the board of directors, and Messrs. Henner, Liptak, Simon, Steinmetz and Wheeler, as individual Managing Directors of the GPLLC, may be deemed to beneficially own certain of the shares held of record by Clarus.
(4) Each of Messrs. Galakatos, Henner, Liptak, Simon, Steinmetz and Wheeler disclaims beneficial ownership of all shares held of record by Clarus in which he does not have an actual pecuniary interest.

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