Datadog Co-Founder & CTO Files Form 144 to Sell $10.7M in Class A Common Stock

Executive Summary

On September 23, 2026, Datadog, Inc. insider Alexis T. Le-Quoc (Co-Founder, Director, and Officer/CTO) filed a Form 144 proposing the sale of 43,224 shares of Class A Common Stock with an estimated aggregate market value of approximately $10.70 million through Morgan Stanley Smith Barney LLC.

Transaction Details

• Filer: Alexis T Le-Quoc
• Position: Director and Officer
• Proposed Sale Quantity: 43,224 shares
• Aggregate Market Value: $10,696,859.40 (~$247.47 per share implied price)
• Shares Outstanding: 334,904,614 shares (representing ~0.013% of outstanding shares)
• Approximate Sale Date: September 23, 2026
• Acquisition Origin: Shares were acquired on December 6, 2023, via the cash exercise of stock options.

Trading Plan and Historical Context

• Rule 10b5-1 Plan: The proposed sale is executed pursuant to a pre-arranged Rule 10b5-1 trading plan established on June 13, 2025.
• Past 3 Months Activity: The filer has conducted regular, structured liquidations under this plan across July, August, and September 2026, totaling over $65 million in gross proceeds across multiple tranches.

Market Impact & Significance

This planned disposition is categorized as Medium significance. Although the headline transaction amount is substantial ($10.7M), the sale is routine and programmatic under a pre-established Rule 10b5-1 trading plan adopted over a year prior. It represents a negligible fraction of the company's total shares outstanding and follows a consistent pattern of scheduled diversification.