X0306 4 2017-09-12 0001110803 ILLUMINA INC ILMN 0001707477 Van Oene Mark 5200 ILLUMINA WAY SAN DIEGO CA 92122 1 SVP Chief Commercial Officer Common Stock 2017-09-12 4 M 0 5838 29.44 A 24908 D Common Stock 2017-09-12 4 S 0 1800 210.3942 D 23108 D Common Stock 2017-09-12 4 S 0 3154 211.397 D 19954 D Common Stock 2017-09-12 4 S 0 884 213.0341 D 19070 D Common Stock 2017-09-12 4 S 0 2200 210.4873 D 16870 D Common Stock 2017-09-12 4 S 0 626 211.3619 D 16244 D Common Stock 2017-09-12 4 S 0 300 212.4533 D 15944 D Common Stock 2017-09-12 4 S 0 765 213.2487 D 15179 D Non-qualified Stock Option (Right to Buy) 29.44 2017-09-12 4 M 0 5838 0 D 2012-01-05 2021-12-05 Common Stock 5838 6000 D The sale was made pursuant to a 10b5-1 plan. Weighted average sale price representing 1,800 shares sold ranging from $209.86 to $210.79 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 3,154 shares sold ranging from $210.88 to $211.73 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 884 shares sold ranging from $212.37 to $213.35 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 2,200 shares sold ranging from $210.00 to $210.97 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 626 shares sold ranging from $211.01 to $211.59 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 300 shares sold ranging from $212.10 to $212.63 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Weighted average sale price representing 765 shares sold ranging from $213.15 to $213.48 per share. Number of shares sold at each separate price will be made available to the SEC staff, the issuer, or a security holder of the issuer upon request. Balance includes 14 shares acquired through Employee Stock Purchase Plan. By: Robert Maynes for Mark Van Oene 2017-09-14