X0306 4 2017-01-03 0 0001420800 Colfax CORP CFX 0001625057 Trerotola Matthew L. 420 NATIONAL BUSINESS PARKWAY 5TH FLOOR ANNAPOLIS JUNCTION MD 20701 1 1 0 0 President & CEO Common Stock, par value $.001 2017-01-03 4 S 0 16929 36.75 D 60856 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 7, 2016. These shares were sold to meet tax obligations relating to the vesting and delivery of the second tranche of restricted stock units granted to Mr. Trerotola upon his hire. The price reported in this row of Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.52 to $37.08, inclusive. The reporting person undertakes to provide to Colfax Corporation, any security holder of Colfax Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4. /s/ A. Lynne Puckett, Attorney-in-Fact 2017-01-04