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 July 31, 2026, three members of our board of directors adopted the following Rule 10b5-1 trading arrangements:

On July 8, 2026, Dwight Merriman, amember of our board of directors, adopted a trading plan intended to satisfy the conditions under Rule 10b5-1(c) of the Exchange Act. Mr. Merriman’s plan is for the sale of shares of our common stock held by Mr. Merriman and certain of his affiliated entities in amounts of up to (i)238,825 shares, plus (ii) a sufficient amount of shares necessary to attain approximately $1.3 million in proceeds, plus (iii) all shares received upon the vesting, if any, of RSUs granted to Mr. Merriman as part of his 2027 annual equity award grant for his board and committee service, in each case at prices determined in accordance with a formula set forth in the plan. The plan terminates on the earlier of (i) the date that all the shares under the plan are sold and (ii)August 31, 2027, subject to early termination for certain specified events set forth in the plan.

On July 7, 2026, Charles Hazard, Jr., amember of our board of directors, adopted a trading plan intended to satisfy the conditions under Rule 10b5-1(c) of the Exchange Act. Mr. Hazard’s plan is for the sale of up to 7,149 shares of common stock held by Mr. Hazard, in amounts and prices determined in accordance with a formula set forth in the plan and terminates on the earlier of (i) the date that all the shares under the plan are sold and (ii)September 30, 2027, subject to early termination for certain specified events set forth in the plan.

On July 9, 2026, Archana Agrawal, amember of our board of directors, adopted a trading plan intended to satisfy the conditions under Rule 10b5-1(c) of the Exchange Act. Ms. Agrawal’s plan is for the sale of shares of common stock held by Ms. Agrawal in amounts of up to (i)1,000 shares, plus (ii) 50% of the shares received upon the vesting, if any, of RSUs granted to Ms. Agrawal as part of her 2027 annual equity award grant for her board and committee service, in each case at prices and amounts determined in accordance with a formula set forth in the plan. The plan terminates on the earlier of (i) the date all the shares under the plan are sold and (ii)September 30, 2027, subject to early termination for certain specified events set forth in the plan.

During the three months ended July 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.”