MongoDB Announces CEO Transition: CJ Desai Resigns, Former CEO Dev Ittycheria Returns as Interim CEO

Executive Summary

On September 24, 2026, MongoDB, Inc. ($MDB) was notified by President, Chief Executive Officer, and Director Chirantan ("CJ") Desai of his intention to resign from his executive and board roles, effective September 28, 2026. According to the accompanying press release (Exhibit 99.1), Mr. Desai is departing to pursue a senior role at Meta Platforms, Inc. The company stated that his resignation was not due to any disagreement relating to operations, policies, or practices.

Effective September 28, 2026, the Board appointed Dev Ittycheria as Interim President and Chief Executive Officer. Mr. Ittycheria previously led MongoDB as President and CEO from September 2014 to November 2025, overseeing its revenue growth from ~$35 million to over $2.3 billion.

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Key Details & Leadership Context

1. Outgoing CEO Chirantan Desai:

   • Notified the board on September 24, 2026.
   • Resignation effective September 28, 2026.
   • Transitioning to a senior executive post at Meta Platforms, Inc.

2. Incoming Interim CEO Dev Ittycheria:

   • Appointed on September 26, 2026; effective September 28, 2026.
   • Has served on MongoDB's Board since September 2014 and led the company for over 11 years as CEO until late 2025.
   • Maintains his existing Advisory Agreement dated October 29, 2025, during his interim service.
   • Continues to serve as a partner and senior advisor at Sequoia Capital and lead independent director at Datadog, Inc.

3. Search for Permanent Successor:

   • The Board has commenced a comprehensive search for a permanent CEO and retained a top executive search firm.

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Business Outlook & Market Impact

• Guidance Reaffirmed: Alongside the leadership announcement, MongoDB reaffirmed its financial guidance for the third quarter and full fiscal year 2027 previously issued on September 1, 2026.
• Investor Day: The company is proceeding with its scheduled Investor Day at Nasdaq MarketSite on September 29, 2026.
• Market Implications: While unexpected departures of sitting chief executives typically cause near-term volatility, the swift appointment of long-tenured predecessor Dev Ittycheria and the reaffirmation of financial guidance serve to stabilize customer and investor confidence during the search process.