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PeoplePublic Stake Value as of Nov 11, 2026

No. 15 by Public Stake Value · Energy

Lyndal Stephens Greth & family

Oil & Gas
Public Stake Value
$11.7B
Disclosed US-listed shares × latest close. Not a net worth. As of Nov 11, 2026.
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Latest moves

Lyndal Stephens Greth & familyIPO / MarketsEnergyFANGAI read · ▼ Spending outlook raised

Diamondback shares fall even as profit and output both climbed

The move

Diamondback Energy reported third-quarter revenue of $5.4 billion and net income attributable to the company of $1.6 billion, with diluted EPS of $5.69. Oil production rose to about 525 thousand barrels per day. The company raised its full-year 2026 capital-spending guidance to $3.95 billion to $4.00 billion, up from about $3.9 billion, while also raising its base dividend 7.3% to $1.18 per share and repurchasing 1.3 million shares for about $251 million. Shares fell 5.8% the day of the report. Lyndal Stephens Greth and her family are Diamondback's largest shareholder, with a 23.2% stake received when Diamondback bought the family's Endeavor Energy Resources in 2024.

Why it matters

The drop shows investors punishing an oil producer for spending more even as profit and output both rose, a sign Wall Street wants cash returned to shareholders rather than reinvested in the ground while oil prices stay range-bound.

The bear case

The company still raised its dividend, kept buying back stock and raised production guidance, so the underlying growth story hasn't actually worsened.

What to watch

Whether Diamondback's fourth-quarter report shows the extra spending translating into higher 2027 production guidance.

Source · Diamondback EnergyRead original ↗Report an error

Recent SEC filings

SEC filings · last 90 days

Greth Lyndal · filed Sep 17, 2026
Sold 9.1M FANG · ~$1.9B
Greth Lyndal · filed Sep 17, 2026
Sold 9.1M FANG · ~$1.9B
Greth Lyndal · filed Sep 17, 2026

Form 4 insider trades post within 2 business days. 13F fund holdings can arrive 45 days after quarter end. New to filings? Read Filings 101.

Footprint

Companies

Diamondback Energy, Inc.FANG · NASDAQ · Largest shareholder · 23.2% · as of Sep 2026 · ▲ 0.72%
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Ticker
FANG
Exchange
NASDAQ
Role
Largest shareholder; ultimate beneficial owner of shares held by SGF FANG Holdings, LP (shared voting/dispositive power). Received stock when Diamondback bought the family's Endeavor Energy Resources (~$26B, closed Sept 2024). Endeavor stockholders nominate four Diamondback directors under a Stockholders Agreement.
Stake
23.2% (64,957,047 shares)
Stake as of
2026-09-16
source ↗

Investment vehicles

SGF FANG Holdings, LPholding co
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Type
holding co
Notes
Delaware LP; record holder of the family's Diamondback shares since an Aug 13, 2025 internal reorganization (replacing Autry Stephens Management Trust, ACS Capital Management LLC and Stephens family trusts); Greth is ultimate beneficial owner
source ↗

Private deals

SGF FANG sold 9,079,675 Diamondback shares at $205.26 (~$1.86B) under Rule 144 via Morgan Stanley; 30-day lock-upSep 2026
source ↗
SGF FANG sold 10,000,000 Diamondback shares at $204.25 (~$2.04B) under Rule 144 via J.P. Morgan; 30-day lock-upJun 2026
source ↗
Underwritten secondary offering of 12,650,000 Diamondback shares at $170.19 (~$2.15B) via Evercore, Citigroup and J.P.…Mar 2026
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In full
Underwritten secondary offering of 12,650,000 Diamondback shares at $170.19 (~$2.15B) via Evercore, Citigroup and J.P. Morgan; closed Mar 12, 2026; 60-day lock-up
Date
2026-03-10
source ↗
Diamondback repurchased 1,000,000 shares at $162.88 (Feb 3) and 1,000,000 at $168.99 (Feb 4) from SGF FANG under the…Feb 2026
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In full
Diamondback repurchased 1,000,000 shares at $162.88 (Feb 3) and 1,000,000 at $168.99 (Feb 4) from SGF FANG under the repurchase agreement
Date
2026-02-04
source ↗
Repurchase agreement: Diamondback bought 2,000,000 shares from SGF FANG at $152.59; SGF FANG got the right to sell up…Nov 2025
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In full
Repurchase agreement: Diamondback bought 2,000,000 shares from SGF FANG at $152.59; SGF FANG got the right to sell up to 3,000,000 shares per quarter to Diamondback at prevailing closing prices through Dec 31, 2026
Date
2025-11-28
source ↗
Internal reorganization moved the family's 101.7M Diamondback shares (35.1%) into SGF FANG Holdings, LPAug 2025
source ↗

Prices via Finnhub · as of Nov 11, 2026 12:22 PM ET. For information only.

What to watch

Expiry of 30-day lock-up from the Sept 16, 2026 sale (further sales possible after ~Oct 16, 2026)Oct 16, 2026
source ↗
Quarterly put right to sell up to 3M shares to Diamondback runs through Dec 31, 2026 (possible Q4 2026 repurchase)Dec 31, 2026
source ↗
New Schedule 13D/A and Form 4 filings from SGF FANG/Greth (stake has fallen from 35.1% in Aug 2025 to 23.2%)
source ↗
Diamondback Q3 2026 earnings (date not verified; typically early November)
source ↗