Dick Teresa L. 4

What Happened
Teresa L. Dick, Diamondback Energy's Chief Accounting Officer, Executive Vice President and Assistant Secretary, sold 5,000 shares of Diamondback common stock on March 18, 2026. The shares were disposed at $190.00 each, for total proceeds of $950,000. This was a sale (not a purchase) and therefore typically reflects a liquidity event rather than an expressly bullish signal.

Key Details

• Transaction date and price: 2026-03-18 — 5,000 shares sold at $190.00 per share (total $950,000).
• Report filed: Form 4 filed 2026-03-19 (timely; not flagged late).
• Transaction type: Reported as "Open market or private sale" (code S — sale).
• Shares owned after transaction: Not specified in the provided filing details.
• Footnotes/plan: No 10b5-1 plan, tax-withholding, or other special footnotes were included in the provided information.

Context
Sales by company officers are common and can reflect personal financial planning or diversification rather than a view on the company's prospects. Because this was a straight sale (no option exercise or gift), there is no immediate indication of additional derivative activity. Retail investors should view this as routine insider selling unless combined with other material insider trends or company developments.