Form 4 Filing for Datadog, Inc. - Insider Transactions

This filing details transactions made by Julie Richardson, a director at Datadog, Inc. (DDOG), on September 4, 2026. Richardson acquired 5,625 shares of Class A Common Stock through the exercise of stock options, which were fully vested and exercisable. The exercise price was $7.9567 per share, and the options were part of a grant expiring in 2029. Concurrently, she disposed of 5,625 shares of Class B Common Stock, which are convertible into Class A Common Stock on a one-to-one basis. These conversions are subject to certain conditions, including transfer and the tenth anniversary of the IPO. Additionally, Richardson sold 5,212 shares of Class A Common Stock at a weighted-average price of $212.2051 and another 413 shares at a weighted-average price of $212.8518. These sales were conducted under a Rule 10b5-1 trading plan. Following these transactions, Richardson holds 8,803 shares of Class A Common Stock directly.