MongoDB (MDB) 4: CFO $727K RSU tax withholding (Oct 5, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-10-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MongoDB, Inc. (MDB) CIK: 0001441816 --- Reporting Owner --- Name: BERRY MICHAEL J CIK: 0001269088 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-10-01 | Code: F (Payment of exercise/tax) Shares: -2,086 | Price: $348.61 Total Value: $727,200.46 Shares Owned After: 64,739 | Ownership: D (Direct) Footnotes: [F1] Represents shares of common stock withheld by the Issuer to satisfy tax withholding obligations for the Reporting Person due upon the vesting of Restricted Stock Units previously granted to the Reporting Person. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F2] These shares are held by The Berry Family Trust, a revocable trust of which the Reporting Person is a trustee. --- Footnotes (Complete Index) --- F1: Represents shares of common stock withheld by the Issuer to satisfy tax withholding obligations for the Reporting Person due upon the vesting of Restricted Stock Units previously granted to the Reporting Person. F2: These shares are held by The Berry Family Trust, a revocable trust of which the Reporting Person is a trustee. --- Signature --- /s/ /s/ Paul Johnston, Attorney-in-Fact (2026-10-05)