X0306 4 2018-02-23 0 0000816284 CELGENE CORP /DE/ CELG 0001180469 MARIO ERNEST C/O CELGENE CORPORATION 86 MORRIS AVENUE SUMMIT NJ 07901 1 0 0 0 Common Stock 2018-02-14 5 G 0 E 2250 0.00 D 68774 D Common Stock 2018-02-14 5 G 0 E 2250 0.00 D 324 I By Spouse Common Stock 2018-02-23 4 S 0 13370 94.4875 D 55404 D The reporting person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The price reported in Column 4 is a weighted average price. These shares were sold by the reporting person in multiple transactions at prices ranging from $94.45 to $94.54, inclusive. The reporting person undertakes to provide to Celgene Corporation (the "Company"), any security holder of the Company, 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/ Peter N. Kellogg ________________________ Peter N. Kellogg, Attorney in Fact 2018-02-26