Sec Form 4/A Filing - McPhail Steven @ FLUIDIGM CORP - 2017-09-20

FORM 4/A 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 McPhail Steven 2. Issuer Name and Ticker or Trading Symbol FLUIDIGM CORP [ FLDM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Commercial Officer (Last) (First) (Middle) C/O FLUIDIGM CORPORATION, 7000 SHORELINE COURT, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 09/20/2017 (Street) SOUTH SAN FRANCISCO, CA94080 4. If Amendment, Date Original Filed (MM/DD/YY) 09/22/2017 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

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 Employee Stock Option (Right to Buy) $ 25.23 09/20/2017 D 31,000 ( 1 ) 05/21/2025 Common Stock 31,000 ( 2 ) 0 D Employee Stock Option (Right to Buy) $ 5.13 09/20/2017 A 7,127 ( 3 ) 09/20/2027 Common Stock 7,127 ( 2 ) 7,127 D Employee Stock Option (Right to Buy) $ 7.1 09/20/2017 D 13,500 ( 4 ) 03/04/2026 Common Stock 13,500 ( 5 ) 0 D Employee Stock Option (Right to Buy) $ 5.13 09/20/2017 A 8,941 ( 3 ) ( 6 ) Common Stock 8,941 ( 5 ) 8,941 D Employee Stock Option (Right to Buy) $ 6.16 09/20/2017 D 51,375 ( 7 ) 02/13/2027 Common Stock 51,375 ( 8 ) 0 D Employee Stock Option (Right to Buy) $ 5.13 09/20/2017 A 36,697 ( 3 ) ( 6 ) Common Stock 36,697 ( 8 ) 36,697 D Employee Stock Option (Right to Buy) $ 7.1 09/20/2017 D 6,750 ( 4 ) 03/04/2026 Common Stock 6,750 ( 9 ) 0 D Employee Stock Option (Right to Buy) $ 5.13 09/20/2017 A 4,471 ( 3 ) ( 6 ) Common Stock 4,471 ( 9 ) 4,471 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other McPhail Steven C/O FLUIDIGM CORPORATION 7000 SHORELINE COURT, SUITE 100 SOUTH SAN FRANCISCO, CA94080 Chief Commercial Officer Signatures /s/ Steven McPhail by Nicholas Khadder, Attorney-in-Fact 04/03/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Option provided for vesting of 12/48th of the total number of shares subject to the Option on May 7, 2016 and thirty-six equal monthly installments beginning on June 7, 2017. ( 2 )On September 20, 2017, the Issuer cancelled, pursuant to the Issuer's option exchange program, an Option for 31,000 shares of FLDM common stock granted to the Reporting Person on May 21, 2015. In exchange, the Reporting Person received a replacement Option, for 7,127 shares, having an exercise price of $5.13 per share. ( 3 )1/12th of the total number of shares underlying the Option will vest on February 20, 2018, and 1/12th of the total number of shares underlying the Option granted will vest every three months thereafter until fully vested, subject to the Reporting Person's continued status as a Service Provider as defined in the Company's 2011 Equity Incentive Plan through the applicable vest date. ( 4 )The Option provided for vesting in forty-eight equal monthly installments beginning on February 1, 2016. ( 5 )On September 20, 2017, the Issuer cancelled, pursuant to the Issuer's option exchange program, an Option for 13,500 shares of FLDM common stock granted to the Reporting Person on March 4, 2016. In exchange, the Reporting Person received a replacement Option, for 8,941 shares, having an exercise price of $5.13 per share. ( 6 )The Option expiration date is September 20, 2027. ( 7 )The Option provided for vesting in forty-eight equal monthly installments beginning on February 1, 2017. ( 8 )On September 20, 2017, the Issuer cancelled, pursuant to the Issuer's option exchange program, an Option for 51,375 shares of FLDM common stock granted to the Reporting Person on February 13, 2017. In exchange, the Reporting Person received a replacement Option, for 36,697 shares, having an exercise price of $5.13 per share. ( 9 )On September 20, 2017, the Issuer cancelled, pursuant to the Issuer's option exchange program, an Option for 6,750 shares of FLDM common stock granted to the Reporting Person on March 4, 2016. In exchange, the Reporting Person received a replacement Option, for 4,471 shares, having an exercise price of $5.13 per share.

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