X0306 4 2018-06-12 0 0001353283 SPLUNK INC SPLK 0001290110 Merritt Douglas C/O SPLUNK INC. 270 BRANNAN STREET SAN FRANCISCO CA 94107 1 1 0 0 President and CEO Common Stock 2018-06-12 4 S 0 6042 116.93 D 293095 D Common Stock 2018-06-12 4 S 0 6511 117.65 D 286584 D Common Stock 2018-06-12 4 S 0 2800 119.02 D 283784 D Common Stock 2018-06-12 4 S 0 900 119.58 D 282884 D Common Stock 2018-06-13 4 S 0 8316 117.70 D 274568 D Common Stock 2018-06-13 4 S 0 8280 118.44 D 266288 D Common Stock 2018-06-13 4 S 0 100 119.20 D 226188 D The reported shares were sold to satisfy the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs") and performance units ("PSUs"). The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.37 to $117.36, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, 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 footnotes (2) through (5) and (7) through (8) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.37 to $118.36, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.41 to $119.39, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.41 to $119.76, inclusive. The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 28, 2017. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.085 to $118.08, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.09 to $118.68, inclusive. /s/ Steve Dean, by power of attorney 2018-06-13