FANG Diamondback Energy, Inc. Insider Trading

Director Charles Alvin Meloy sold 83,334 shares at $187.12 blended average for $15.6M on 2026-06-16 via 10b5-1 plan; retains 851.5K shares.

Charles Alvin Meloy executed 3 separate sales totaling 83,334 shares for $15,593,331.53 on 2026-06-16 at prices ranging from $186.36 to $187.68, reducing his holdings by 8.9% to 851,530 shares. This transaction is part of a pre-arranged 10b5-1 trading plan, meaning the sales were scheduled and not discretionary. His cross-ticker track record shows 20 prior sells with an average 90-day return of +10.4%, but those historical outcomes do not characterize the mechanical nature of this scheduled transaction. The current stock price of $185.48 is 13.5% below the 52-week high of $214.51, and the stock has declined 9.8% over the trailing 30 days and 2.5% over 90 days. Given the scheduled nature of the 10b5-1 plan and his continued substantial holdings post-sale, this filing reflects portfolio execution against a predetermined schedule rather than a discretionary positioning decision.

CAO Teresa L. Dick sold 5,000 shares of FANG at $205.00; holdings remain substantial at 80.8K shares post-sale.

Teresa L. Dick, CAO and Executive Vice President, sold 5,000 shares at $205.00 on 2026-06-04, reducing her holdings from 85.8K to 80.8K shares (-5.8% of pre-transaction holdings). The sale price of $205.00 sits near recent highs; the 52-week range is $134.30–$214.51, and the current price of $198.20 is -7.6% from the 52-week high. Across her cross-ticker track record, Dick has completed 3 prior open-market sells with a 90d well-timed rate of 33.33% (1 of 3 prior sells at FANG itself were well-timed on a 90-day basis). Her recent activity at FANG shows mixed outcomes: a sell on 2026-05-19 was poorly-timed at 90d (-3.8%), while sells on 2026-03-09 and 2026-03-06 posted 90d gains of +7.6% and +9.7% respectively. This transaction occurs against a backdrop of strong fundamentals: FANG reported $4.2B in latest quarterly revenue, annual revenue growth of +35.8%, and a market cap of $55.8B, though the P/E of 196.24 reflects a premium valuation.

SGF Fang Holdings, LP sold 10,000,000 shares of FANG for $2.0B, reducing stake to 74.04M shares (−11.9%)

SGF Fang Holdings, LP, a 10% owner, executed a substantial $2,042,500,000 sale of 10,000,000 shares at $204.25 on 2026-06-04, reducing its position by 11.9%. The timing merits scrutiny: the sale occurred near the stock's 52-week high of $214.51 (only 5.4% below peak), and the price has since fallen 1.6% in the 30 days since. Examining the insider's prior five sales at FANG, all five posted positive 90-day returns (ranging from +9.4% to +31.2%), indicating the insider consistently sold before subsequent stock appreciation—a pattern of poorly timed exits. Against this historical backdrop, the current sale at an elevated valuation represents a departure: the stock has contracted 1.6% over 30 days, and continued weakness would mark a shift toward more opportune exit timing relative to the insider's track record at this ticker.

FANG CEO Hof Matthew Kaes Van'T sold 15,000 shares in 2 transactions for $3,125,000.00 on 2026-06-03

CEO Hof Matthew Kaes Van'T executed 2 separate sales totaling 15,000 shares (15.0K shares) for $3,125,000.00 (blended average price $208.33) on 2026-06-03, reducing his holdings from 148,614 shares to 133,614 shares post-transaction. The sales occurred near the 52-week high (current price $202.94 is -5.4% from 52-week high of $214.51), and at prices ($205.00 and $210.00) above the current trading level. His prior 5 sales at FANG show mixed timing outcomes: 3 of 5 were well-timed at the 90-day mark, with his most recent sale on 2026-03-06 followed by a 90-day return of +16.4%, suggesting his prior sells at this ticker have not consistently preceded declines. The cross-ticker track record shows 11 prior sells with a 90d well-timed rate of 55.56%, indicating marginally better-than-random timing discipline historically. With a P/E of 200.93 and net income of only $25,000,000.00 against $4.2B quarterly revenue, the valuation warrants investor attention alongside the insider's equity reduction.

FANG EVP Matt Zmigrosky sold 5,000 shares at $210.00 on 2026-06-03; retains 41.4K shares.

Matt Zmigrosky, EVP Chief Legal and Admin Officer, sold 5,000 shares (10.8% of pre-transaction holdings) at $210.00, near the 52-week high of $214.51. His prior trades at FANG show a mixed timing pattern—2 of 5 prior sells resulted in subsequent 90-day declines—suggesting neither consistent prescience nor consistently poor timing at this ticker. The company reports strong fundamentals with annual revenue growth of +35.8% and $4.2B quarterly revenue, though the P/E ratio of 200.93 reflects a significant valuation premium. The sale size and retention of 41.4K shares indicate a modest reduction rather than a substantial conviction shift, consistent with occasional portfolio adjustments by a senior executive who remains substantially invested.

CAO Teresa Dick sells 7,000 FANG shares at $200.90; stock now at $202.40, P/E at 200.40

Teresa L. Dick, CAO and Executive Vice President, sold 7,000 shares of Diamondback Energy on 2026-06-02 at $200.90, reducing holdings from 92,755 to 85,755 shares. The stock has since moved modestly higher to $202.40 and is down 5.6% from its 52-week high of $214.51, while the company reports strong fundamentals with annual revenue growth of +35.8% and a market cap of $56,937,811,312.80. Examining Dick's same-ticker history at FANG shows mixed timing outcomes: of her three prior sales at this ticker, only one achieved a negative 90-day return (the May 2026 sale at -3.8%), while the earlier March sales captured positive 90-day returns of +7.6% and +9.7%, indicating inconsistent execution relative to subsequent price action. The transaction's modest size relative to her remaining 85,755 shares and the fundamentals' strength suggest this is a routine portfolio management event rather than a signal of material conviction shifts.

EVP Matt Zmigrosky sold 5,000 shares of FANG at $200.54 (2026-06-01); stock now $202.40, +14.5% in 90 days

Matt Zmigrosky, EVP Chief Legal and Admin Officer, sold 5,000 shares at $200.54 on 2026-06-01, reducing his holdings from 51,392 to 46,392 shares. Over his prior 5 trades at FANG, 2 of 5 were well-timed at the 90-day mark; his cross-ticker track record shows a 50.00% well-timed rate on 7 prior sells. The current stock price of $202.40 is -5.6% from the 52-week high of $214.51, and the stock has posted a +14.5% 90-day return since the transaction date—a return pattern that follows a mixed timing history at this ticker.

CAO Teresa L. Dick sold 5,000 shares of FANG at $207.00; holds 92,755 shares post-sale

Teresa L. Dick, Exec. VP and CAO of Diamondback Energy, sold 5,000 shares for $1,035,000.00 on 2026-05-19 at $207.00 per share, reducing her holdings by 5.1% to 92,755 shares. Her cross-ticker track record shows 2 prior open-market sales with an average 90-day return of +11.5% and a 90-day well-timed rate of 0.00%, indicating those prior sells occurred before subsequent gains. At this specific ticker (FANG), her 2 prior sales on 2026-03-09 and 2026-03-06 each preceded positive 90-day returns (+10.4% and +12.6% respectively), showing a 0.00% well-timed rate at FANG as well—the stock rose after both prior sales. The current price of $200.97 sits 6.3% below the 52-week high and reflects a 5.9% gain over 30 days. This sale follows a consistent pattern at this ticker where Dick's prior equity reductions have not preceded declines, and comes during a period of strong stock momentum and elevated valuation metrics (P/E of 198.98).

EVP Zmigrosky sells 5.0K FANG shares at $200.10; retains 51.4K shares after transaction

Zmigrosky's sale of 5,000 shares represents a modest 8.8% reduction of his reported position, resulting in a transaction value of $1,000,500.50. The sale occurred near the stock's recent trading range, roughly 6.6% below the 52-week high of $214.51. Zmigrosky's historical track record shows mixed timing: 6 prior sells with an average 90-day return of +5.4%, though only 40% of those sales preceded stock declines. The transaction timing coincides with strong recent momentum (+7.4% over 30 days, +18.4% over 90 days), which may reflect portfolio rebalancing rather than conviction-driven selling. With FANG trading at an elevated P/E of 198.28 and the executive retaining 51.4K shares post-sale, this appears to be selective profit-taking rather than a wholesale exit.

Director Meloy sells ~15,700 shares worth nearly $3M in single-day execution while stock trades below its 52-week high.

Director Meloy Charles Alvin executed a substantial portfolio reduction, selling roughly 15,700 shares across seven transactions over two trading days totaling nearly $3M. This represents his 30th through 36th open-market sale in the past three years—a pattern of consistent selling with no offsetting purchases. His prior sales at this company show conflicting timing signals: four of his five previous exits were well-timed over the longer term, but one was poorly-timed near-term, suggesting mixed execution precision. The company remains profitable with strong revenue growth, yet Meloy is selling as the stock trades noticeably below its 52-week high, which typically might suggest weakness, though the stock has gained modestly over the past quarter despite the broader selling pressure. His track record shows he has sold repeatedly but without the kind of near-term accuracy that would clearly signal this trade as prescient—this is a director reducing exposure, not a strategically timed bet.