STOCK TITAN

Lyndal Stephens Greth consolidates 35.1% stake in Diamondback (FANG)

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Diamondback Energy, Inc. common stock following an internal reorganization on August 13, 2025. The filing states that Lyndal Stephens Greth remains the ultimate beneficial owner and that the reorganization changed only the form, not the amount, of her ownership.

The reported stake represents 35.1% of the company's outstanding common stock based on 289,486,120 shares outstanding as of August 1, 2025. Several affiliated entities have exited the Section 13(d) reporting group and no longer beneficially own shares. The filing also notes that the Endeavor Stockholders have nominated four directors to the company’s board under a Stockholders Agreement.

Positive

  • Record consolidation: 101,686,727 shares were centralized in SGF FANG Holdings, LP, simplifying ownership structure
  • Clear beneficial ownership: Lyndal Stephens Greth is explicitly identified as the ultimate beneficial owner following the reorganization
  • Significant stake disclosed: The filing reports a 35.1% ownership interest based on 289,486,120 shares outstanding
  • Board action noted: The Endeavor Stockholders have nominated four directors under the Stockholders Agreement

Negative

  • Concentrated ownership (35.1%) may lead to significant control over board and strategy

Insights

TL;DR: A single beneficial owner holds a large, controlling stake (35.1%), consolidating voting power through a reorganization.

The reorganization that moved 101,686,727 shares into SGF FANG Holdings, LP materially consolidates ownership while leaving beneficial ownership unchanged for Mrs. Stephens Greth. A 35.1% stake is large enough to influence corporate decisions and, combined with the nomination of four directors by the Endeavor Stockholders, could meaningfully affect board composition and strategic outcomes. For investors, the key implications are increased governance influence by a single owner and potential shifts in board-driven strategy; no financial performance metrics are disclosed in this amendment.

TL;DR: Ownership was simplified and several affiliates exited the 13(d) reporting group; board nominations were asserted.

The filing documents an internal ownership restructuring that centralizes record ownership in SGF FANG Holdings, LP while confirming Lyndal Stephens Greth as ultimate beneficial owner. Several entities ceased to be reporting persons, reducing the complexity of the disclosure group. The notification that Endeavor Stockholders have nominated four directors under the Stockholders Agreement is a governance action of note; it is procedural here and the filing does not describe any changes to board seats being filled or voting outcomes. Materiality is primarily governance-related rather than financial in this amendment.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: On August 13, 2025, in connection with the Reorganization (as defined and described in Item 2(a) hereto), SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Company Common Stock. Lyndal Stephens Greth ("Mrs. Stephens Greth") remains the ultimate beneficial owner of the shares. Note to Row 13: Based upon 289,486,120 shares of Company Common Stock outstanding as of August 1, 2025, as disclosed by the Company in its Form 10-Q filed with the Securities and Exchange Commission (the "SEC") on August 6, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Rows 8, 10, and 11: Following the Reorganization, these figures consist of 101,686,727 shares of Company Common Stock held directly by SGF FANG Holdings, LP, which is ultimately controlled by Mrs. Stephens Greth. Mrs. Stephens Greth is the ultimate beneficial owner of the shares of Company Common Stock. Note to Row 13: Based upon 289,486,120 shares of Company Common Stock outstanding as of August 1, 2025, as disclosed by the Company in its Form 10-Q filed with the SEC on August 6, 2025.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: On August 13, 2025, in connection with the Reorganization, SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Company Common Stock. Mrs. Stephens Greth remains the ultimate beneficial owner of the shares. The Autry Stephens Management Trust no longer beneficially owns any shares of Company Common Stock following the Reorganization. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: On August 13, 2025, in connection with the Reorganization, SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Company Common Stock. Mrs. Stephens Greth remains the ultimate beneficial owner of the shares. ACS Capital Management, LLC no longer beneficially owns any shares of Company Common Stock following the Reorganization. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: On August 13, 2025, in connection with the Reorganization, SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Company Common Stock. Mrs. Stephens Greth remains the ultimate beneficial owner of the shares. ACS Capital Holdings, LP no longer beneficially owns any shares of Company Common Stock following the Reorganization. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: On August 13, 2025, in connection with the Reorganization, SGF FANG Holdings, LP became the record holder of 101,686,727 shares of Company Common Stock. Mrs. Stephens Greth remains the ultimate beneficial owner of the shares. Endeavor Manager, LLC no longer beneficially owns any shares of Company Common Stock following the Reorganization. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: The Stephens Family Trust is not the record holder or the ultimate beneficial owner of any shares of Company Common Stock. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: The Stephens Family Trust #2 is not the record holder or the ultimate beneficial owner of any shares of Company Common Stock. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: SFT Management, LLC is not the record holder or the ultimate beneficial owner of any shares of Company Common Stock. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: SFT 1 Holdings, LLC is not the record holder or the ultimate beneficial owner of any shares of Company Common Stock. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D




Comment for Type of Reporting Person:
Note to Row 1: SFT 2 Holdings, LLC is not the record holder or the ultimate beneficial owner of any shares of Company Common Stock. Accordingly, it has exited the Section 13(d) reporting scheme and will no longer be a Reporting Person on this Schedule 13D going forward.


SCHEDULE 13D


SGF FANG Holdings, LP
Signature:By: SGF Capital, LLC, its general partner /s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
Greth Lyndal
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
Autry Stephens Management Trust
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
ACS Capital Management, LLC
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
ACS Capital Holdings, LP
Signature:By: ACS Capital Management, LLC, its general partner /s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
Endeavor Manager, LLC
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
Stephens Family Trust
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
Stephens Family Trust #2
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
SFT Management, LLC
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
SFT 1 Holdings, LLC
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025
SFT 2 Holdings, LLC
Signature:/s/ Kevin T. Keen
Name/Title:Kevin T. Keen/Attorney-in-fact
Date:08/15/2025

FAQ

What stake in Diamondback Energy (FANG) does SGF FANG Holdings, LP now hold?

SGF FANG Holdings, LP is the record holder of 101,686,727 shares, representing 35.1% of outstanding common stock based on 289,486,120 shares.

Who is the ultimate beneficial owner after the reorganization?

The filing states that Lyndal Stephens Greth remains the ultimate beneficial owner of the shares held by SGF FANG Holdings, LP.

Did any entities exit the Section 13(d) reporting group?

Yes. The Autry Stephens Management Trust, ACS Capital Management, LLC, ACS Capital Holdings, LP, Endeavor Manager, LLC, the Stephens Family Trusts and certain holding entities no longer beneficially own shares and have exited the 13(d) reporting scheme.

Did the filing indicate changes to board composition?

The filing states that the Endeavor Stockholders have nominated four directors to the company's board under their Stockholders Agreement; the filing does not state whether those nominations resulted in appointments.

When did the reorganization that changed record ownership occur?

The reorganization took place on August 13, 2025, when SGF FANG Holdings, LP became the record holder of the shares.
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