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 Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. 
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 Yes___X___ 
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 No_______ 
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 Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): 
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 Yes______ 
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 No___X___ 
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 Indicate by check mark whether the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): 
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 Yes______ 
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 No___X___ 
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 Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule12g3-2(b) under the Securities Exchange Act of 1934. 
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 Yes______ 
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 No___X___ 
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 If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):82 N/A 
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 ICON plc 
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 /s/ Brendan Brennan 
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 Date:  January 10, 2018 
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 Brendan Brennan 
Chief Financial Officer 
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