Sec Form 4 Filing - Foley Todd @ Celladon Corp - 2014-02-04

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 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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1. Name and Address of Reporting Person Foley Todd 2. Issuer Name and Ticker or Trading Symbol Celladon Corp [ CLDN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MPM ASSET MANAGEMENT, 200 CLARENDON STREET, 54TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 02/04/2014 (Street) BOSTON, MA02116 4. If Amendment, Date Original Filed (MM/DD/YY) 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 Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 Common Stock 02/04/2014 C 943,797 ( 1 ) A 943,797 I See Footnote ( 1 ) Common Stock 02/04/2014 C 11,370 ( 3 ) A $ 8 955,167 I See Footnote ( 4 ) Common Stock 02/04/2014 P 111,608 ( 5 ) A $ 8 1,066,775 I See Footnote ( 6 )

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Series A-1 Convertible Preferred Stock ( 2 ) 02/04/2014 C 11,788,047 ( 7 ) ( 8 ) Common Stock 943,797 $ 0 0 I See Footnote ( 9 ) Convertible Promissory Notes $ 8 02/04/2014 C 11,370 ( 3 ) ( 3 ) Common Stock 11,370 $ 8 0 I See Footnote ( 10 ) Warrant to Purchase Series A-1 Preferred Stock-Right to Buy $ 0.449 02/04/2014 C( 11 ) 218,806 10/15/2013 10/15/2018 Series A-1 Preferred Stock 218,806 $ 0 0 I See Footnote ( 12 ) Warrant to Purchase Common Stock-Right to Buy $ 5.61 02/04/2014 C( 11 ) 17,517 10/15/2013 10/15/2018 Common Stock 17,517 $ 0 17,517 I See Footnote ( 13 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Foley Todd C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA02116 X Signatures /s/ Todd Foley 02/06/2014 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares are held as follows: 884,566 by MPM BioVentures IV-QP, L.P. ("BV IV QP"), 34,078 by MPM BioVentures IV GmbH & Co. Beteiligungs KG ("BV IV KG") and 25,153 by MPM Asset Management Investors BV4 LLC ("AM BV4"). MPM BioVentures IV GP LLC and MPM BioVentures IV LLC ("BV LLC") are the direct and indirect general partners of BV IV QP and BV IV KG and BV LLC is the manager of AM BV4. The Reporting Person is a member of BV LLC. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein. ( 2 )Each share of Series A-1 Preferred Stock automatically converted into 0.080064 of Common Stock without payment of further consideration upon the closing of the Issuer's initial public offering ("IPO"). The shares had no expiration date. ( 3 )Represent the conversion of outstanding promissory notes in the principal amount of $89,313.48, plus interest accrued at 6% per annum, which became convertible at $8.00 per share, and simultaneously automatically converted into shares of the Issuer's Common Stock, upon the closing of the IPO. The principal amount of the notes were held as follows: $83,708.25 by BV IV QP, $3,224.93 by BV IV KG and $2,380.30 by AM BV4 and the principal and interest converted into the following shares of Common Stock: 10,657 by BV IV QP, 410 by BV IV KG and 303 by AM BV4. ( 4 )The shares are held as follows: 895,223 by BV IV QP, 34,488 by BV IV KG and 25,456 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein. ( 5 )The shares were purchased as follows: 104,603 by BV IV QP, 4,030 by BV IV KG and 2,975 by AM BV4. ( 6 )The shares are held as follows: 999,826 by BV IV QP, 38,518 by BV IV KG and 28,431 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein. ( 7 )Immediately. ( 8 )Not applicable. ( 9 )The shares of Series A-1 Preferred Stock were held as follows: 11,048,241 by BV IV QP, 425,642 by BV IV KG and 314,164 by AM BV4. ( 10 )The principal and interest converted into the following shares of Common Stock: 10,657 by BV IV QP, 410 by BV IV KG and 303 by AM BV4. ( 11 )Represents the automatic conversion of warrants to purchase Series A-1 Preferred Stock into warrants to purchase Common Stock on a 1-for-12.49 basis upon the closing of the IPO. ( 12 )The warrants were held as follows: 205,075 by BV IV QP, 7,900 by BV IV KG and 5,831 by AM BV4. ( 13 )The warrants are held as follows: 16,419 by BV IV QP, 632 by BV IV KG and 466 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

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