MongoDB, Inc. — Director's Dealing 2018

Dec 3, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MongoDB, Inc. (MDB)
CIK: 0001441816
Period of Report: 2018-11-29

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-11-29	Common Stock	S	174558	$82.51	Disposed	3655713	Indirect
2018-11-29	Common Stock	S	79544	$83.51	Disposed	3576169	Indirect
2018-11-29	Common Stock	S	72676	$84.17	Disposed	3503493	Indirect
2018-11-30	Common Stock	S	186551	$80.37	Disposed	3316942	Indirect
2018-11-30	Common Stock	S	48269	$81.28	Disposed	3268673	Indirect
2018-11-30	Common Stock	S	13604	$82.81	Disposed	3255069	Indirect
2018-11-30	Common Stock	S	80209	$83.93	Disposed	3174860	Indirect
2018-11-30	Common Stock	S	28460	$84.55	Disposed	3146400	Indirect

Footnotes

F1: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $81.90 to $82.89 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F2: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $82.90 to $83.89 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F3: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $83.90 to $84.63 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F4: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $80.00 to $80.99 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F5: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $81.00 to $81.62 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F6: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $82.16 to $83.13 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F7: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $83.22 to $84.18 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F8: Represents the weighted average purchase price of shares purchased in a series of open market transactions on the transaction date at prices ranging from $84.22 to $84.88 per share. The Reporting Persons undertake to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each price.

F9: 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.