Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Williamson Stephen
 2. Date of Event Requiring Statement (Month/Day/Year)
08/01/2015		 3. Issuer Name and Ticker or Trading Symbol
THERMO FISHER SCIENTIFIC INC. [TMO]
(Last)
(First)
(Middle)
81 WYMAN STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr. VP and CFO
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

WALTHAM, MA 02451		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 16,473
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy)   (1) 02/23/2018 Common Stock 18,600 $ 54.97 D  
Stock Option (Right to Buy)   (2) 02/26/2020 Common Stock 9,500 $ 73.24 D  
Stock Option (Right to Buy)   (3) 02/26/2021 Common Stock 8,700 $ 124.28 D  
Stock Option (Right to Buy)   (4) 02/25/2022 Common Stock 19,800 $ 131.07 D  
Stock Option (Right to Buy) 03/05/2011(5) 03/05/2017 Common Stock 3,650 $ 49.49 D  
Stock Option (Right to Buy) 03/05/2012(6) 03/05/2017 Common Stock 5,450 $ 49.49 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Williamson Stephen
81 WYMAN STREET
WALTHAM, MA 02451		       Sr. VP and CFO  

Signatures

/s/ Barbara J. Lucas, Attorney-in-Fact for Stephen Williamson 08/04/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) The option became exercisable in four equal annual installments. The first installment became exercisable on February 23, 2012, and the next three installments became exercisable on February 23, 2013, 2014 and 2015.
(2) The option is exercisable in four equal annual installments. The first and second installments became exercisable on February 26, 2014 and 2015, and the third and fourth installments will become exercisable on February 26, 2016 and 2017.
(3) The option is exercisable in four equal annual installments. The first installment became exercisable on February 26, 2015, and the second, third and fourth installments will become exercisable on February 26, 2016, 2017 and 2018.
(4) The option is exercisable in four equal annual installments beginning on February 25, 2016.
(5) The option became exercisable in four equal annual installments. The first installment became exercisable on March 5, 2011, and the next three installments became exercisable on March 5, 2012, 2013 and 2014.
(6) The option became exercisable in four equal annual installments. The first installment became exercisable on March 5, 2012, and the next three installments became exercisable on March 5, 2013, 2014 and 2015.
 
Remarks:
Exhibit List         Exhibit 24 - Confirming Statement

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