X0306 4 2020-06-10 0 0001441816 MongoDB, Inc. MDB 0001222287 BOTHA ROELOF C/O SEQUOIA CAPITAL, 2800 SAND HILL ROAD, SUITE 101 MENLO PARK CA 94025 1 0 0 0 Class A Common Stock 2020-06-10 4 C 0 846819 0.00 A 846819 I By Sequoia Capital U.S. Growth Fund IV, L.P. Class A Common Stock 2020-06-10 4 C 0 37310 0.00 A 37310 I By Sequoia Capital USGF Principals Fund IV, L.P. Class A Common Stock 2020-06-10 4 C 0 744272 0.00 A 744272 I By Sequoia Capital U.S. Venture 2010 Fund, LP Class A Common Stock 2020-06-10 4 C 0 81788 0.00 A 81788 I By Sequoia Capital U.S. Venture 2010 Partners Fund (Q), LP Class A Common Stock 2020-06-10 4 C 0 16515 0.00 A 16515 I By Sequoia Capital U.S. Venture 2010 Partners Fund, LP Class A Common Stock 2020-06-10 4 J 0 846819 0.00 D 0 I By Sequoia Capital U.S. Growth Fund IV, L.P. Class A Common Stock 2020-06-10 4 J 0 37310 0.00 D 0 I By Sequoia Capital USGF Principals Fund IV, L.P. Class A Common Stock 2020-06-10 4 J 0 744272 0.00 D 0 I By Sequoia Capital U.S. Venture 2010 Fund, LP Class A Common Stock 2020-06-10 4 J 0 81788 0.00 D 0 I By Sequoia Capital U.S. Venture 2010 Partners Fund (Q), LP Class A Common Stock 2020-06-10 4 J 0 16515 0.00 D 0 I By Sequoia Capital U.S. Venture 2010 Partners Fund, LP Class A Common Stock 2020-06-10 4 J 0 59600 0.00 A 240677 I By estate planning vehicle Class A Common Stock 1057 D Class B Common Stock 2020-06-10 4 C 0 846819 0.00 D Class A Common Stock 846819 0 I By Sequoia Capital U.S. Growth Fund IV, L.P. Class B Common Stock 2020-06-10 4 C 0 37310 0.00 D Class A Common Stock 37310 0 I By Sequoia Capital USGF Principals Fund IV, L.P. Class B Common Stock 2020-06-10 4 C 0 744272 0.00 D Class A Common Stock 744272 0 I By Sequoia Capital U.S. Venture 2010 Fund, LP Class B Common Stock 2020-06-10 4 C 0 81788 0.00 D Class A Common Stock 81788 0 I By Sequoia Capital U.S. Venture 2010 Partners Fund (Q), LP Class B Common Stock 2020-06-10 4 C 0 16515 0.00 D Class A Common Stock 16515 0 I By Sequoia Capital U.S. Venture 2010 Partners Fund, LP SC US (TTGP), Ltd. is the general partner of SCGF IV Management, L.P., which is the general partner of Sequoia Capital U.S. Growth Fund IV, L.P. and Sequoia Capital USGF Principals Fund IV, L.P., or collectively, the SC GFIV Funds. The Reporting Person is a Director of SC US (TTGP), Ltd. The Reporting Person disclaims beneficial ownership of the securities held by the SC GFIV Funds except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. SC US (TTGP), Ltd. is the sole general partner of SC U.S. Venture 2010 Management, L.P., which is the sole general partner of each of Sequoia Capital U.S. Venture 2010 Fund, LP, Sequoia Capital U.S. Venture 2010 Partners Fund, LP and Sequoia Capital U.S. Venture 2010 Partners Fund (Q), LP, or collectively, the Venture 2010 Funds. The Reporting Person is a Director of SC US (TTGP), Ltd. The Reporting Person disclaims beneficial ownership of the securities held by the Venture 2010 Funds except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. Represents a distribution of Class A Common Stock of the Issuer to partners or members and includes subsequent distributions by general partners or managing members to their respective partners or members. Represents the receipt of shares of Class A Common Stock of the Issuer by virtue of the pro rata in-kind distributions described in footnote (3) above. Represents 1,057 restricted stock units acquired pursuant to the Issuer's non-employee director compensation policy. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock of the Issuer and has no expiration date. The shares underlying the restricted stock unit award shall vest in full on the earlier of (a) the first anniversary of the grant date, and (b) the date of the Issuer's 2020 annual stockholders' meeting, subject to the Reporting Person providing continuous service to the Issuer on such date. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and has no expiration date. /s/ Jung Yeon Son, Attorney-In-Fact 2020-06-12