Sec Form 4 Filing - Muhlenbeck Frank @ ConforMIS Inc - 2015-07-07

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 Muhlenbeck Frank 2. Issuer Name and Ticker or Trading Symbol ConforMIS Inc [ CFMS] 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 CONFORMIS, INC., 28 CROSBY DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 07/07/2015 (Street) BEDFORD, MA01730 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 07/07/2015 C 1,200,875 A 1,200,875 I See footnote. ( 2 ) Common Stock 07/07/2015 C 1,912,227 A 1,912,227 I See footnote. ( 3 )

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 B Preferred Stock ( 1 ) 07/07/2015 C 1,115,234 ( 1 ) ( 1 ) Common Stock 557,617 $ 0 0 I See footnote. (3) Series C Preferred Stock ( 1 ) 07/07/2015 C 357,142 ( 1 ) ( 1 ) Common Stock 178,571 $ 0 0 I See footnote. (3) Series D Preferred Stock ( 1 ) 07/07/2015 C 1,353,799 ( 1 ) ( 1 ) Common Stock 676,899 $ 0 0 I See footnote. (2) Series D Preferred Stock ( 1 ) 07/07/2015 C 2,352,179 ( 1 ) ( 1 ) Common Stock 1,176,089 $ 0 0 I See footnote. (3) Series E-1 Preferred Stock ( 1 ) 07/07/2015 C 375,000 ( 1 ) ( 1 ) Common Stock 187,500 $ 0 0 I See footnote. (2) Series E-2 Preferred Stock ( 1 ) 07/07/2015 C 672,952 ( 1 ) ( 1 ) Common Stock 336,476 $ 0 0 I See footnote. (2) Series D Preferred Stock Warrant (right to buy) ( 4 ) 07/07/2015 C 208,333 ( 4 ) ( 4 ) ( 4 ) Series D Preferred Stock 208,333 ( 4 ) $ 0 0 I See footnote. (3) Series D Preferred Stock Warrant (right to buy) ( 5 ) 07/07/2015 C 208,333 ( 5 ) ( 5 ) ( 5 ) Series D Preferred Stock 208,333 ( 5 ) $ 0 0 I See footnote. (3) Series D Preferred Stock Warrant (right to buy) ( 6 ) 07/07/2015 C 100,000 ( 6 ) ( 6 ) ( 6 ) Series D Preferred Stock 100,000 ( 6 ) $ 0 0 I See footnote. ( 3 ) Series D Preferred Stock Warrant (right to buy) ( 7 ) 07/07/2015 C 83,333 ( 7 ) ( 7 ) ( 7 ) Series D Preferred Stock 83,333 ( 7 ) $ 0 0 I See footnote. ( 2 ) Series D Preferred Stock Warrant (right to buy) ( 8 ) 07/07/2015 C 66,666 ( 8 ) ( 8 ) ( 8 ) Series D Preferred Stock 66,666 ( 8 ) $ 0 0 I See footnote. ( 3 ) Common Stock Warrant (right to buy) $ 12 ( 4 ) 07/07/2015 C 104,166 ( 4 ) ( 4 ) Common Stock 104,166 $ 0 104,166 I See footnote. ( 3 ) Common Stock Warrant (right to buy) $ 12 ( 5 ) 07/07/2015 C 104,166 ( 5 ) ( 5 ) Common Stock 104,166 $ 0 208,332 I See footnote. ( 3 ) Common Stock Warrant (right to buy) $ 12 ( 6 ) 07/07/2015 C 50,000 ( 6 ) ( 6 ) Common Stock 50,000 $ 0 258,332 I See footnote. ( 3 ) Common Stock Warrant (right to buy) $ 12 ( 7 ) 07/07/2015 C 41,666 ( 7 ) ( 7 ) Common Stock 41,666 $ 0 41,666 I See footnote. ( 2 ) Common Stock Warrant (right to buy) $ 12 ( 8 ) 07/07/2015 C 33,333 ( 8 ) ( 8 ) Common Stock 33,333 $ 0 291,665 I See footnote. ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Muhlenbeck Frank C/O CONFORMIS, INC. 28 CROSBY DRIVE BEDFORD, MA01730 X Signatures /s/ Lan Marinelli, Attorney-in-Fact 07/08/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Series B, C, D, E-1 and E-2 Preferred Stock converted into Common Stock on a two-for-one basis upon the closing of the Issuer's initial public offering without the payment of consideration. The Series B, C, D, E-1 and E-2 Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date. ( 2 )The securities are directly held by aeris CAPITAL Archer L.P. The Reporting Person is a managing director of an entity that acts as an investment advisor to aeris CAPITAL Archer Ltd. (the general partner of aeris CAPITAL Archer L.P.) and disclaims beneficial ownership of all shares except to the extent of any pecuniary interest he may have therein. ( 3 )The securities are directly held by SGR Sagittarius Holding AG. The Reporting Person is a managing director of an entity that acts as an investment advisor to SGR Sagittarius Holding AG and disclaims beneficial ownership of all shares except to the extent of any pecuniary interest he may have therein. ( 4 )The Series D Preferred Stock Warrants were exercisable for 208,333 shares of Series D Preferred Stock at an exercise price of $6.00 per share. Upon the closing of the Issuer's initial public offering, the Warrants automatically became exercisable for 104,166 shares of Common Stock at an exercise price of $12.00 per share. The Warrants are exercisable at any time at the holder's election prior to the earlier of December 31, 2016 or the occurrence of a merger, consolidation or sale of substantially all of the assets of the Issuer. ( 5 )The Series D Preferred Stock Warrants were exercisable for 208,333 shares of Series D Preferred Stock at an exercise price of $6.00 per share. Upon the closing of the Issuer's initial public offering, the Warrants automatically became exercisable for 104,166 shares of Common Stock at an exercise price of $12.00 per share. The Warrants are exercisable at any time at the holder's election prior to the earlier of December 31, 2016 or the occurrence of a merger, consolidation or sale of substantially all of the assets of the Issuer. ( 6 )The Series D Preferred Stock Warrants were exercisable for 100,000 shares of Series D Preferred Stock at an exercise price of $6.00 per share. Upon the closing of the Issuer's initial public offering, the Warrants automatically became exercisable for 50,000 shares of Common Stock at an exercise price of $12.00 per share. The Warrants are exercisable at any time at the holder's election prior to the earlier of December 31, 2016 or the occurrence of a merger, consolidation or sale of substantially all of the assets of the Issuer. ( 7 )The Series D Preferred Stock Warrants were exercisable for 83,333 shares of Series D Preferred Stock at an exercise price of $6.00 per share. Upon the closing of the Issuer's initial public offering, the Warrants automatically became exercisable for 41,666 shares of Common Stock at an exercise price of $12.00 per share. The Warrants are exercisable at any time at the holder's election prior to the earlier of December 31, 2016 or the occurrence of a merger, consolidation or sale of substantially all of the assets of the Issuer. ( 8 )The Series D Preferred Stock Warrants were exercisable for 66,666 shares of Series D Preferred Stock at an exercise price of $6.00 per share. Upon the closing of the Issuer's initial public offering, the Warrants automatically became exercisable for 33,333 shares of Common Stock at an exercise price of $12.00 per share. The Warrants are exercisable at any time at the holder's election prior to the earlier of December 31, 2016 or the occurrence of a merger, consolidation or sale of substantially all of the assets of the Issuer.

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