Datadog Co-Founder & CTO Files Proposed $12.1M Class A Share Sale Under 10b5-1 Plan

Executive Summary

On October 28, 2026, Alexis T. Le-Quoc, Co-Founder, Director, and Officer of Datadog, Inc. ($DDOG), filed a Form 144 proposing the sale of 43,224 shares of Class A Common Stock with an estimated aggregate market value of approximately $12.14 million through Morgan Stanley Smith Barney LLC.

Key Transaction Details

• Shares Proposed for Sale: 43,224
• Aggregate Market Value: $12,138,163.68 (~$280.82 per share)
• Shares Outstanding: 334,904,614 Class A Common shares
• Approximate Sale Date: October 28, 2026
• Acquisition Origin: Stock option exercises between December 6, 2023, and October 14, 2024

Trading Plan and Historical Context

• Rule 10b5-1 Plan: The proposed sale is executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on June 13, 2025.
• Prior Sales Activity: In the preceding three months, the insider reported multiple programmatic sales consistent with the 10b5-1 schedule, totaling over 230,000 shares and generating more than $66 million in gross proceeds across August, September, and October 2026.

Market Impact & Significance

Trading significance is rated as Medium. While the transaction value ($12.14 million) is sizable, it represents a minute fraction (~0.013%) of total shares outstanding and follows an established pre-set Rule 10b5-1 trading schedule.