X0609 4 2026-10-01 0 0001441816 MongoDB, Inc. MDB 0001397383 Ittycheria Dev false C/O MONGODB, INC. 1633 BROADWAY, 38TH FLOOR NEW YORK NY 10019 1 1 0 0 Interim President and CEO 0 Common Stock 2026-10-01 4 F 0 3034 348.61 D 155693 D 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. /s/ Paul Johnston, Attorney-in-Fact 2026-10-05