X0609 4 2026-06-04 0 0001441816 MongoDB, Inc. MDB 0001397383 Ittycheria Dev false C/O MONGODB, INC. 1633 BROADWAY, 38TH FLOOR NEW YORK NY 10019 1 0 0 0 0 Common Stock 2026-06-04 4 S 0 7003 380.51 D 194759 D Common Stock 2026-06-04 4 S 0 3426 381.51 D 191333 D Common Stock 2026-06-04 4 S 0 8881 382.49 D 182452 D Common Stock 2026-06-04 4 S 0 7765 383.69 D 174687 D Common Stock 2026-06-04 4 S 0 7501 384.49 D 167186 D Common Stock 2026-06-04 4 S 0 3315 385.43 D 163871 D Common Stock 2026-06-04 4 S 0 1392 386.95 D 162479 D Common Stock 2026-06-04 4 S 0 717 387.84 D 161762 D The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $380.00 to $380.97, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $381.04 to $382.03, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $382.05 to $383.00, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $383.08 to $384.07, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $384.08 to $385.07, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $385.08 to $385.98, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $386.22 to $387.10, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $387.22 to $388.12, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Gahee Lee, Attorney in Fact 2026-06-08