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FANG Diamondback Energy, Inc. Insider Trading

Latest: Director Sold $3.0M of Shares · May 2026
5 filings analyzed · Latest 2026-06-02
Insider buys
0
Insider sells
5
Unique insiders
3
Direction
Net selling
June 2026
2026-06-02
low
Teresa L. Dick Sell
CAO, Exec. VP, Assist. Sec.
7,000 shares
$1,406,301
@ $200.90
Significance 4/10

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.

2026-06-02
medium
Matt Zmigrosky Sell
EVP, Chief Legal and Admin Off
5,000 shares
$1,002,700
@ $200.54
Significance 5/10

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.

May 2026
2026-05-21
medium
Teresa L. Dick Sell
CAO, Exec. VP, Assist. Sec.
5,000 shares
$1,035,000
@ $207.00
Significance 4/10

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).

2026-05-14
low
Zmigrosky Matt Sell
EVP, Chief Legal and Admin Off
5,000 shares
$1,000,500
@ $200.10
Significance 4/10

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.

2026-05-11
medium
Meloy Charles Alvin Sell
15,714 shares
$2,972,098
@ $189.14
Significance 5/10

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.

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