MongoDB, Inc. — Director's Dealing 2019

May 3, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MongoDB, Inc. (MDB)
CIK: 0001441816
Period of Report: 2019-05-01

Reporting Person: Ittycheria Dev (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-05-01	Class A Common Stock	C	19600	—	Acquired	214995	Direct
2019-05-01	Class A Common Stock	S	5807	$132.99	Disposed	209188	Direct
2019-05-01	Class A Common Stock	S	6752	$133.89	Disposed	202436	Direct
2019-05-01	Class A Common Stock	S	5241	$135.03	Disposed	197195	Direct
2019-05-01	Class A Common Stock	S	900	$135.69	Disposed	196295	Direct
2019-05-01	Class A Common Stock	S	700	$137.45	Disposed	195595	Direct
2019-05-01	Class A Common Stock	S	200	$141.28	Disposed	195395	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-05-01	Employee Stock Option (Right to Buy)	$6.5	M	19600	Disposed	2024-09-12	Class B Common Stock (19600.0)	Direct
2019-05-01	Class B Common Stock	$	M	19600	Acquired		Class A Common Stock (19600.0)	Direct
2019-05-01	Class B Common Stock	$	C	19600	Disposed		Class A Common Stock (19600.0)	Direct

Footnotes

F1: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation, and (ii) at such time as the outstanding shares of Class B common stock represent less than 10% of the aggregate number of shares of the Issuer's capital stock outstanding.

F2: The transactions were pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $132.39 to $133.35, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F4: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $133.41 to $134.32, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $134.46 to $135.45, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F6: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $135.49 to $136.39, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F7: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $137.02 to $137.61, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F8: Immediately exercisable and fully vested.