MongoDB (MDB) 4: 3,034 shares withheld for taxes (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: Ittycheria Dev CIK: 0001397383 Role: Director, Officer (Interim President and CEO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-10-01 | Code: F (Payment of exercise/tax) Shares: -3,034 | Price: $348.61 Total Value: $1,057,682.74 Shares Owned After: 155,693 | 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. --- 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. --- Signature --- /s/ /s/ Paul Johnston, Attorney-in-Fact (2026-10-05)