MongoDB, Inc. — Director's Dealing 2026

Jan 15, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MongoDB, Inc. (MDB)
CIK: 0001441816
Period of Report: 2026-01-13

Reporting Person: MERRIMAN DWIGHT A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-13	Common Stock	S	6000	$417.73	Disposed	490896	Indirect
2026-01-14	Common Stock	S	2338	$404.26	Disposed	1038978	Direct
2026-01-14	Common Stock	S	1008	$405.47	Disposed	1037970	Direct
2026-01-14	Common Stock	S	200	$406.49	Disposed	1037770	Direct
2026-01-14	Common Stock	S	340	$408.58	Disposed	1037430	Direct
2026-01-14	Common Stock	S	6114	$409.38	Disposed	1031316	Direct
2026-01-15	Common Stock	S	1139	$388.31	Disposed	81652	Indirect

Footnotes

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

F2: These shares are held by The Dwight A. Merriman 2012 Trust for the benefit of the Reporting Person's children.

F3: The price reported is a weighted average sales price. The shares were sold in multiple transactions at prices ranging from $403.80 to $404.71, 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 sales price. The shares were sold in multiple transactions at prices ranging from $404.93 to $405.85, 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 sales price. The shares were sold in multiple transactions at prices ranging from $406.43 to $406.71, 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 sales price. The shares were sold in multiple transactions at prices ranging from $408.31 to $408.75, 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 sales price. The shares were sold in multiple transactions at prices ranging from $409.36 to $409.63, 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: The Dwight A. Merriman Charitable Foundation is a Delaware nonstock nonprofit corporation. The Reporting Person is deemed to have voting and investment power over the shares of MongoDB, Inc. Common Stock held by the Dwight A. Merriman Charitable Foundation, but has no pecuniary interest in these shares.