MongoDB (MDB) 4: Director sells 595 shares (Oct 8, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-10-06 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: MongoDB, Inc. (MDB) CIK: 0001441816 --- Reporting Owner --- Name: Hazard Charles M Jr CIK: 0001339247 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-10-06 | Code: S (Open market sale) Shares: -595 | Price: $363.85 Total Value: $216,490.75 Shares Owned After: 45,237 | Ownership: D (Direct) Footnotes: [F1] The transactions were pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [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. [Holding #2] Security: Common Stock Ownership: I (Indirect) Footnotes: [F3] The Reporting Person was appointed as the manager and general partner of a family limited partnership that owns the reported securities. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein. --- Footnotes (Complete Index) --- F1: The transactions were 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. F3: The Reporting Person was appointed as the manager and general partner of a family limited partnership that owns the reported securities. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein. --- Signature --- /s/ /s/ Paul Johnston, Attorney-in-Fact (2026-10-08)