X0609 4 2026-10-12 0 0001441816 MongoDB, Inc. MDB 0001269088 BERRY MICHAEL J false C/O MONGODB, INC. 1633 BROADWAY, 38TH FLOOR NEW YORK NY 10019 0 1 0 0 Chief Financial Officer 0 Common Stock 2026-10-12 4 A 0 27211 0 A 88658 D Common Stock 15705 I By Trust This security represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. The vesting schedule of the RSUs shall be: thirty-three percent (33%) on April 1, 2027, thirty-three percent (33%) on October 1, 2027, and thirty-four percent (34%) on April 1, 2028, subject to the Reporting Person's continued service with the Issuer through each applicable vesting date. These shares are held by The Berry Family Trust, a revocable trust of which the Reporting Person is a trustee and a beneficiary. /s/ Andrew Stephens, Attorney-in-Fact 2026-10-14