10% Owner SGF FANG Holdings Sells $1.86 Billion in Diamondback Energy ($FANG)

Executive Summary

On September 17, 2026, a Form 4 was filed reporting a massive secondary sale by SGF FANG Holdings, LP and Lyndal Greth, 10% owners of Diamondback Energy, Inc. ($FANG). On September 16, 2026, the reporting entities disposed of 9,079,675 shares of common stock at an average price of $205.26 per share, yielding aggregate gross proceeds of approximately $1.86 billion.

Transaction Breakdown

• Security: Common Stock
• Transaction Code: S (Open market or private sale pursuant to Rule 144)
• Volume: 9,079,675 shares
• Execution Price: $205.26
• Total Transaction Value: $1,863,694,090.50
• Post-Transaction Holdings: 64,957,047 shares held directly

Ownership Impact & Context

Prior to the transaction, SGF FANG Holdings held 74,036,722 shares. This transaction represents a disposition of approximately 12.26% of their equity position. Despite the large block trade, SGF FANG Holdings retains a substantial controlling stake of over 64.9 million shares, preserving its status as one of Diamondback Energy's largest single shareholders.