MongoDB, Inc. — Director's Dealing 2025

Oct 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MongoDB, Inc. (MDB)
CIK: 0001441816
Period of Report: 2025-10-01

Reporting Person: Hazard Charles M Jr (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-10-01	Class A Common Stock	S	833	$311.88	Disposed	46533	Direct
2025-10-01	Class A Common Stock	S	166	$311.88	Disposed	14327	Indirect

Footnotes

F1: The transaction was pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2: These shares are held by The Narragansett Bay Childrens Trust (the "Trust"). The "Reporting Person" is the Trustee of the Trust and, as such, has the power to vote and dispose of the shares held by the Trust. The "Reporting Person" disclaims beneficial ownership of the shares owned by the Trust except to the extent of his pecuniary interest therein 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.