Datadog (DDOG) CFO David Obstler Sells $3.86M in Shares

What Happened

• David M. Obstler, Chief Financial Officer of Datadog (DDOG), sold a total of 16,000 shares in open‑market transactions on September 21, 2026 at $241.25 per share, generating aggregate proceeds of approximately $3,860,000.
• The filing also shows multiple conversions of Class B common stock into Class A common stock (no cash consideration) tied to the same date. The sales were made pursuant to a prearranged 10b5‑1 trading plan dated June 13, 2026.
• This is a sale (not a purchase); sales under a 10b5‑1 plan are often routine or preplanned and do not necessarily reflect current sentiment.

Key Details

• Transaction date: 2026-09-21; Filing date (Form 4): 2026-09-23 (filed within the typical 2‑business‑day window).
• Price and proceeds: 16,000 shares sold at $241.25 each; total proceeds ≈ $3,860,000.
• Derivative activity: several conversions of Class B common stock into Class A common stock at $0.00 (conversion right per issuer charter).
• Footnotes of note:
  • F1: Sales were pursuant to a 10b5‑1 trading plan dated June 13, 2026.
  • F2: Class B shares are convertible into Class A on a one‑for‑one basis (no expiration), and convert automatically upon certain events.
  • F3/F4: Some shares are held in Obstler Children 2019 Trusts for the benefit of his children; his spouse is trustee.
• Shares owned after the transactions: not specified in the provided filing excerpt.

Context

• Conversion explanation: The Form 4 shows conversion of Class B to Class A (zero cash), which allows formerly non‑public/dual‑class shares to be sold as Class A shares.
• Trading plan note: Because the sales were executed under a 10b5‑1 plan, they were prearranged and typically indicate routine liquidity rather than an ad hoc decision.
• For retail investors: purchases generally signal more informative insider conviction than scheduled sales; treat this as a planned liquidity event unless other information indicates otherwise.

(Transactions coded: S = Sale, C = Conversion of derivative security.)