Albert Barkmann - 01 Mar 2026 Form 4 Insider Report for Diamondback Energy, Inc. (FANG)

Signature
/s/ Matt Zmigrosky, as attorney-in-fact for Albert Barkmann
Issuer symbol
FANG
Transactions as of
01 Mar 2026
Net transactions value
-$612,936
Form type
4
Filing time
03 Mar 2026, 17:52:05 UTC
Previous filing
11 Sep 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Barkmann Albert Exec. VP and Chief Engineer 500 WEST TEXAS AVENUE, SUITE 100, MIDLAND /s/ Matt Zmigrosky, as attorney-in-fact for Albert Barkmann 03 Mar 2026 0002012976

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction FANG Common Stock Award $0 +3,500 +14% $0.000000 28,662 01 Mar 2026 Direct F1, F2
transaction FANG Common Stock Award $0 +6,430 +22% $0.000000 35,092 01 Mar 2026 Direct F3
transaction FANG Common Stock Tax liability $424,755 -2,440 -7% $174.08 32,652 01 Mar 2026 Direct F4
transaction FANG Common Stock Tax liability $48,916 -281 -0.86% $174.08 32,371 01 Mar 2026 Direct F5
transaction FANG Common Stock Tax liability $59,187 -340 -1.1% $174.08 32,031 01 Mar 2026 Direct F6
transaction FANG Common Stock Tax liability $80,077 -460 -1.4% $174.08 31,571 01 Mar 2026 Direct F7
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. These restricted stock units were granted under the issuer's equity incentive plan and will vest in three equal installments beginning on March 1, 2027.
F2 The Reporting Person's previous Forms 4 incorrectly overstated the number of shares owned by a de minimis amount. The number of shares beneficially owned by the Reporting Person following the transactions reported herein has been updated accordingly.
F3 These securities are performance-based restricted stock units for the performance period from January 1, 2023 to December 31, 2025 that were granted under the issuer's equity incentive plan on March 1, 2023. All of these performance-based restricted stock units vested as of December 31, 2025 following the certification by the issuer's compensation committee of the applicable performance conditions for such performance-based restricted stock unit awards settling on March 1, 2026.
F4 The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement of the performance-based restricted stock units granted on March 1, 2023 and vested as of December 31, 2025 following the certification by the issuer's compensation committee of the applicable performance conditions for such performance-based restricted stock unit awards settling on March 1, 2026. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on February 27, 2025.
F5 The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on March 1, 2026 of the third tranche of the time-based restricted stock units granted to the reporting person on March 1, 2023. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on February 27, 2026.
F6 The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on March 1, 2026 of the second tranche of the time-based restricted stock units granted to the reporting person on March 1, 2024. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on February 27, 2026.
F7 The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on March 1, 2026 of the first tranche of the time-based restricted stock units granted to the reporting person on March 1, 2025. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on February 27, 2026.