GEL Genesis Energy LP

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 1)*

Genesis Energy, L.P.

(Name of Issuer)

Common Units representing limited partner interests

(Title of Class of Securities)

371927104

(CUSIP Number)

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

August 22, 2024

(Date of Event which Requires Filing of this Statement)

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: ☐

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

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

CUSIP No. 371927104

2

SCHEDULE 13D

CUSIP No. 371927104

3

SCHEDULE 13D

CUSIP No. 371927104

4

SCHEDULE 13D

CUSIP No. 371927104

5

SCHEDULE 13D

CUSIP No. 371927104

6

SCHEDULE 13D

CUSIP No. 371927104

7

SCHEDULE 13D

CUSIP No. 371927104

8

SCHEDULE 13D

CUSIP No. 371927104

9

Explanatory Note

This Amendment No. 1 (“Amendment No. 1”) amends and supplements the Schedule 13D originally filed with the Securities and Exchange Commission on July 15, 2019 (as amended, the “Schedule 13D”) relating to Class A Common Units (as defined below) of the Issuer (as defined below).

Except as set forth herein, this Amendment No. 1 does not modify any of the information previously reported in the Schedule 13D. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Schedule 13D.

Item 1. Security and Issuer.

Item 1 of the Schedule 13D is hereby amended and restated as follows:

This Statement on Schedule 13D relates to Common Units - Class A (the “Class A Common Units”) representing limited partner interests of Genesis Energy, L.P., a Delaware limited partnership (the “Issuer”). The Issuer’s principal executive offices are located at 811 Louisiana, Suite 1200, Houston, Texas 77002.

Item 2. Identity and Background.

Item 2 of the Schedule 13D is hereby amended and supplemented as follows:

The Blackstone Group Inc. is now known as Blackstone Inc. Blackstone Inc. is a Delaware corporation. Information regarding each director and executive officer of Blackstone Inc. is set forth on the updated Schedule I attached hereto. The principal business of Blackstone Group Management L.L.C. is performing the functions of, and serving as, the sole holder of the Series II preferred stock of Blackstone Inc. The principal business address of each of the GSO Entities is c/o Blackstone Alternative Credit Advisors LP, 345 Park Avenue, New York, New York 10154. Mr. Goodman is a former executive of GSO Holdings I L.L.C. and certain affiliated entities.

Item 4. Purpose of Transaction.

Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following:

The information in Items 5 and 6 of this Amendment No. 1 is incorporated herein by reference.

Item 5. Interest in Securities of the Issuer.

Item 5 of the Schedule 13D is hereby amended and restated as follows:

(a) and (b) Calculations of the percentage of Class A Common Units beneficially owned is based on 122,424,321 Class A Common Units outstanding as of July 31, 2024, as reported in the Issuer’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 1, 2024, plus the Class A Common Units that GSO Rodeo may acquire upon the conversion of the Preferred Units.

The aggregate number and percentage of Class A Common Units beneficially owned by each Reporting Person and, for each Reporting Person, the number of securities as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition are set forth on rows 7 through 11 and row 13 of the cover pages of this Schedule 13D and are incorporated herein by reference.

As of the date hereof, GSO Rodeo holds 10,211,462 Preferred Units which are convertible into 10,211,462 Class A Common Units.

GSO Rodeo Holdings Associates LLC is the general partner of GSO Rodeo. GSO Holdings I L.L.C. is the managing member GSO Rodeo Holdings Associates LLC. Blackstone Holdings II L.P. is the managing member of GSO Holdings I L.L.C.

10

Blackstone Holdings I/II GP L.L.C. is the general partner of Blackstone Holdings II L.P.

Blackstone Inc. is the sole member of Blackstone Holdings I/II GP L.L.C. The sole holder of the Series II preferred stock of Blackstone Inc. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone’s senior managing directors and controlled by its founder, Stephen A. Schwarzman.

Additionally, Harvest Fund Advisors LLC, an indirect subsidiary of Blackstone Holdings I/II GP L.L.C. (“HFA”), is the beneficial owner of 575,735 shares of Class A Common Units, which units are held by funds and accounts managed by HFA in the ordinary course of its business.

Each such Reporting Person may be deemed to beneficially own the Class A Common Units beneficially owned by the Blackstone funds or accounts directly or indirectly controlled by it or him, but neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission that any Reporting Person (other than GSO Rodeo to the extent it directly holds Issuer securities reported herein) is the beneficial owner of the Class A Common Units referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and each of the Reporting Persons (other than GSO Rodeo to the extent it directly holds Issuer securities reported herein) expressly disclaims beneficial ownership of such Class A Common Units.

Any beneficial ownership of Class A Common Units by any of the persons listed on Schedule I is set forth on Schedule I attached hereto.

(c) On August 22, 2024, GSO Rodeo entered into trades for the sale of 1,344,497 Preferred Units at a price of $33.541 per Preferred Unit in privately negotiated transactions subject to customary closing conditions. Except as set forth in this Amendment No. 1, none of the Reporting Persons or, to the best knowledge of the Reporting Persons, any other person named in Schedule I, has effected any transaction in the past 60 days in Class A Common Units.

(d) To the best knowledge of the Reporting Persons, no person other than the Reporting Persons, or the partners, members, affiliates or shareholders of the Reporting Persons, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities beneficially owned by the Reporting Persons identified in this Item 5.

(e) Effective as of January 1, 2020, Bennett J. Goodman stepped down as an executive of GSO Holdings I L.L.C. and was thereafter no longer deemed to be a beneficial owner of the securities held by the GSO Funds.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is hereby amended and supplemented as follows:

Board Observers Agreement

Michael Zawadzki, no longer serves as an observer to the board of directors of the General Partner pursuant to the rights granted in the Board Observers Agreement. The Reporting Persons still maintain their right to designate an observer to the board of directors of the General Partner; however, no designation has been made as of the date of this filing.

Senior Notes of the Issuer

Accounts managed by an indirect subsidiary of Blackstone currently holds an aggregate of $7,894,000 million principal amount of the Issuer’s senior unsecured notes.

11

SIGNATURES

After reasonable inquiry and to the best of its or his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: August 26, 2024

SCHEDULE I

Executive Officers and Directors of Blackstone Inc.

The name and principal occupation of each director and executive officer of Blackstone Inc. are set forth below. The address for each person listed below is c/o Blackstone Inc., 345 Park Avenue, New York, New York 10154. All executive officers and directors listed are United States citizens.

OFFICERS:

DIRECTORS:

Except as set forth in this Schedule 13D, to the best knowledge of the Reporting Persons, none of the individuals listed above beneficially owns any Class A Common Units.