MongoDB, Inc.

Rule 10b5-1 and Non-Rule 10b5-1 Trading Arrangements

Certain executive officers and directors of the Company may execute purchases and sales of the Company's common stock through Rule 10b5-1 equity trading plans and “non-Rule 10b5-1 equity trading arrangements” (as defined in Item 408(c) of Regulation S-K).

During the three months ended January 31, 2026, two of our executive officers adopted the following Rule 10b5-1 trading arrangements:

On December 18, 2025, Michael J. Berry, our Chief Financial Officer, through a personal trust over which he is a trustee, adopted a trading plan intended to satisfy the conditions under Rule 10b5-1(c) of the Exchange Act. Mr. Berry’s plan is for the sale of shares of up to 10,000 shares of common stock in amounts and prices determined in accordance with a formula set forth in the plan and terminates on the earlier of the date that all the shares under the plan are sold and December 15, 2026, subject to early termination for certain specified events set forth in the plan.

On December 24, 2025, Cedric Pech, our President of Field Operations, adopted a trading plan intended to satisfy the conditions under Rule 10b5-1(c) of the Exchange Act. Mr. Pech’s plan is for the provided potential sale of up to 100% of the (net) shares of common stock resulting from the vesting of an aggregate of 25,571 RSUs and PSUs in amounts and prices determined in accordance with a formula set forth in the plan (net shares are net of tax withholding) over a period scheduled to end on the earlier of (i) the date that all the shares under the plan are sold and (ii)December 31, 2026, subject to early termination for certain specified events set forth in the plan.

During the three months ended January 31, 2026, other than noted above, none of our executive officers or directors terminated or modified a 10b5-1 equity trading plan, oradopted, terminated, or modified any “non-Rule 10b5-1 equity trading arrangement.”