Sec Form 4 Filing - BRACEWELL Mark @ INNOSPEC INC. - 2012-08-15

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 BRACEWELL Mark 2. Issuer Name and Ticker or Trading Symbol INNOSPEC INC. [ IOSP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Group Financial Controller (Last) (First) (Middle) 8375 SOUTH WILLOW STREET 3. Date of Earliest Transaction (MM/DD/YY) 08/15/2012 (Street) LITTLETON, CO80124 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 08/14/2012 S 1,046 D $ 31.07 ( 7 ) 3,649 ( 1 ) D Common Stock 08/14/2012 S 1,200 D $ 31.07 ( 8 ) 3,649 ( 2 ) D Common Stock 08/14/2012 S 750 D $ 31.07 ( 9 ) 3,649 ( 3 ) D

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 Stock Option $ 4.62 08/14/2012 M 1,046 03/24/2012 03/24/2019 Common Stock 1,046 $ 4.62 7,420 ( 4 ) D Stock Option $ 20.23 08/14/2012 M 1,200 02/20/2011 02/20/2018 Common Stock 1,200 $ 20.23 6,220 ( 5 ) D Stock Option $ 27.085 08/14/2012 M 750 02/21/2010 02/21/2017 Common Stock 750 $ 27.085 5,470 ( 6 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BRACEWELL Mark 8375 SOUTH WILLOW STREET LITTLETON, CO80124 Group Financial Controller Signatures Nicola Earl 08/17/2012 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 2 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 3 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 4 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 5 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 6 )Total includes options from other tranches with different exercise prices, vesting dates and expiration dates. ( 7 )The shares of Common Stock sold by the Reporting Peson and reported herein were sold at a range of between $31.00 and $31.17 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. ( 8 )The shares of Common Stock sold by the Reporting Peson and reported herein were sold at a range of between $31.00 and $31.17 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. ( 9 )The shares of Common Stock sold by the Reporting Peson and reported herein were sold at a range of between $31.00 and $31.17 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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