Datadog Director Julie Richardson Files Form 144 to Sell $1.2M in Common Stock

Executive Summary

On September 4, 2026, Datadog, Inc. (NASDAQ: DDOG) Director Julie Richardson filed a Form 144 notifying the proposed sale of 5,625 shares of Class A Common Stock with an estimated aggregate market value of $1,208,025.00 (~$214.76 per share).

Transaction Details

• Filer: Julie Richardson (Director)
• Security: Class A Common Stock
• Broker: Morgan Stanley Smith Barney LLC Executive Financial Services
• Planned Sale Date: September 4, 2026
• Nature of Acquisition: Exercise of stock options paid in cash on September 4, 2026.
• Pre-Arranged Trading Plan: The transaction is conducted pursuant to a Rule 10b5-1 trading plan adopted on June 4, 2026.

Prior Sales Context

Within the past three months, the reporting person completed an additional sale under a 10b5-1 plan:

• September 3, 2026: 5,625 shares sold for gross proceeds of $1,237,500.00.

Market Impact & Significance

The proposed sale of 5,625 shares represents a negligible fraction of Datadog's 334,904,614 shares outstanding. Executed pursuant to a standard Rule 10b5-1 plan established in June 2026, the transaction reflects routine equity compensation monetization and option exercise with Low broader market significance.