X0306 4 2017-01-31 0 0001560327 Rapid7, Inc. RPD 0001647486 Thomas Corey E. C/O RAPID7, INC 100 SUMMER STREET BOSTON MA 02110 1 1 0 0 President and CEO Common Stock 2017-01-31 4 A 0 65000 0.00 A 247831 D Common Stock 200000 I By Trust Employee Stock Option (Right to Buy) 12.47 2017-01-31 4 A 0 134000 0.00 A 2027-01-31 Common Stock 134000 134000 D This security represents restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. This restricted stock unit grant vests in sixteen equal quarterly installments, with the first installment vesting on May 15, 2017, subject to the Reporting Person's continued service with the Issuer. Represents shares held by the Corey E. Thomas Irrevocable Trust of 2016, which is administrated by an independent trustee, and is for the benefit of the Reporting Person's immediate and other family members. 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 these securities for purposes of Section 16 or for any other purpose. This option vests and becomes exercisable in sixteen equal quarterly installments, with the first installment vesting on May 15, 2017, subject to the Reporting Person's continued service with the Issuer. /s/ Peter Kaes, Attorney-in-Fact 2017-02-02