Diamondback Energy Inc. Watch

from DEFA14A 34 pages Endeavor Parent, LLC 110 N. Marienfeld Street Midland, Tx 79701 Attention: William F. Krueger, Vice President and General Counsel E-Mail: Wkrueger@eeronline.com Endeavor Manager, LLC 110 N. Marienfeld Street Midland, Tx 79701 Attention: William F. Krueger, Vice President and General Counsel E-Mail: Wkrueger@eeronline.com With a Copy To: Paul, Weiss, Rifkind, Wharton & Garrison Llp 1285 Avenue of the Americas New York, Ny 10019 ​ ​ Attention: ​ ​ Krishna Veeraraghavan ​ ​ ​ ​ Benjamin M. Goodchild ​ ​ E-Mail: ​ ​ Kveeraraghavan@paulweiss.com ​ ​ ​ ​ Bgoodchild@paulweiss.com ​ ​ Re: Amendment to Merger Agreement

from 8-K 34 pages Endeavor Parent, LLC 110 N. Marienfeld Street Midland, Tx 79701 Attention: William F. Krueger, Vice President and General Counsel E-Mail: Wkrueger@eeronline.com Endeavor Manager, LLC 110 N. Marienfeld Street Midland, Tx 79701 Attention: William F. Krueger, Vice President and General Counsel E-Mail: Wkrueger@eeronline.com With a Copy To: Paul, Weiss, Rifkind, Wharton & Garrison Llp 1285 Avenue of the Americas New York, Ny 10019 ​ ​ Attention: ​ ​ Krishna Veeraraghavan ​ ​ ​ ​ Benjamin M. Goodchild ​ ​ E-Mail: ​ ​ Kveeraraghavan@paulweiss.com ​ ​ ​ ​ Bgoodchild@paulweiss.com ​ ​ Re: Amendment to Merger Agreement

from DEFA14A 98 pages Agreement and Plan of Merger Among Diamondback Energy, Inc. Eclipse Merger Sub I, LLC, Eclipse Merger Sub II, LLC Endeavor Manager, LLC (Solely for Purposes of Section 1.8, Section 2.2, Section 2.3, Section 5.10, Section 5.22, Section 5.23, Section 8.2, Section 8.6, Section 8.7, Section 8.8, and Section 8.9), and Endeavor Parent, LLC Dated as of February 11, 2024

from 8-K 98 pages Agreement and Plan of Merger Among Diamondback Energy, Inc. Eclipse Merger Sub I, LLC, Eclipse Merger Sub II, LLC Endeavor Manager, LLC (Solely for Purposes of Section 1.8, Section 2.2, Section 2.3, Section 5.10, Section 5.22, Section 5.23, Section 8.2, Section 8.6, Section 8.7, Section 8.8, and Section 8.9), and Endeavor Parent, LLC Dated as of February 11, 2024

from 8-K 66 pages Agreement and Plan of Merger by and Among Diamondback Energy, Inc., Rattler Midstream GP LLC, Bacchus Merger Sub Company and Rattler Midstream LP May 15, 2022

from 425 66 pages Agreement and Plan of Merger by and Among Diamondback Energy, Inc., Rattler Midstream GP LLC, Bacchus Merger Sub Company and Rattler Midstream LP May 15, 2022

from 8-K 106 pages Agreement and Plan of Merger Among Diamondback Energy, Inc., Bohemia Merger Sub, Inc. and Qep Resources, Inc. Dated as of December 20, 2020

from 8-K 88 pages Agreement and Plan of Merger by and Among Diamondback Energy, Inc., Sidewinder Merger Sub Inc. and Energen Corporation Dated as of August 14, 2018

from 425 88 pages Agreement and Plan of Merger by and Among Diamondback Energy, Inc., Sidewinder Merger Sub Inc. and Energen Corporation Dated as of August 14, 2018

from 8-K 114 pages Purchase and Sale Agreement by and Among Brigham Resources Operating, LLC, and Brigham Resources Midstream, LLC, Collectively as Seller, Diamondback E&P LLC, as Purchaser, and Diamondback Energy, Inc., as Purchaser Parent Dated as of December 13, 2016

from 8-K 70 pages Purchase and Sale Agreement by and Between Rio Oil and Gas, LLC Rio Oil and Gas (Permian), LLC Rio Oil and Gas (Opco), LLC Bluestem Energy, LP Bluestem Energy Partners, LP Bluestem Energy Holdings, LLC Bluestem Energy Assets, LLC Bluestem Acquisitions, LLC Bc Operating, Inc. Crown Oil Partners V, LP and Crump Energy Partners II, LLC (Collectively, Seller) and Diamondback E&P LLC (Buyer) Dated as of July 18, 2014

from 8-K 29 pages Purchase and Sale Agreement

from 8-K 29 pages Purchase and Sale Agreement

from 8-K 32 pages Purchase and Sale Agreement by and Between Ibex Mineral Resources, LLC a Wyoming Limited Liability Company, and Beehive Partners, LLC a Wyoming Limited Liability Company, Together, as Seller and Diamondback E&P LLC a Delaware Limited Liability Company, as Buyer August 28, 2013