MongoDB, Inc. — Director's Dealing 2018

May 10, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MongoDB, Inc. (MDB)
CIK: 0001441816
Period of Report: 2018-05-08

Reporting Person: Whale Rock Capital Management LLC (10% Owner)
Reporting Person: Sacerdote Alexander C (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-08	Common Stock	P	14850	$38.14	Acquired	2630271	Indirect
2018-05-08	Common Stock	P	1200000	$40.26	Acquired	3830271	Indirect

Footnotes

F1: Shares reported herein are owned by Whale Rock Flagship Master Fund LP and Whale Rock Flagship (AI) Fund LP, investment limited partnerships for which Whale Rock Capital Management LLC ("Whale Rock") serves as investment manager. Whale Rock, as those investment limited partnerships' investment manager, and Alexander Sacerdote, as managing member and owner of Whale Rock, may therefore be deemed to beneficially own such securities. Each of Whale Rock and Mr. Sacerdote disclaims beneficial ownership of the shares reported herein except to the extent of its or his pecuniary interest in such shares, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership for purposes of Section 16 or for any other purpose.