Albert Barkmann

CIK: 0002012976

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (11.1%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)5 (27.8%)

Compensation grants

Other (G, F, J, C, D, …)11 (61.1%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (3)

FANG

Diamondback Energy, Inc.

Officer

VNOM

Viper Energy, Inc.

Officer

VNOM

VNOM Sub, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (18 total)

FANG
Diamondback Energy, Inc.
Sep 10, 2026
Tax Payment(F)
Direct
682 shares at avg. $202.63$138K
FANG
Diamondback Energy, Inc.
May 15, 2026
Sale(S)
Direct
3K shares at avg. $204.04$612K
FANG
Diamondback Energy, Inc.
Mar 13, 2026
Sale(S)
Direct
4K shares at avg. $182.90$732K
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Tax Payment(F)
Direct
281 shares at avg. $174.08$49K
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Award(A)
Direct
3.5K shares-
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Tax Payment(F)
Direct
2.4K shares at avg. $174.08$425K
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Award(A)
Direct
6.4K shares-
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Tax Payment(F)
Direct
460 shares at avg. $174.08$80K
FANG
Diamondback Energy, Inc.
Mar 1, 2026
Tax Payment(F)
Direct
340 shares at avg. $174.08$59K
FANG
Diamondback Energy, Inc.
Sep 10, 2025
Tax Payment(F)
Direct
682 shares at avg. $136.29$93K
VNOM
VNOM Sub, Inc.
Aug 19, 2025
Disposition(D)
Direct
1K shares-
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Tax Payment(F)
Direct
340 shares at avg. $158.96$54K
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Tax Payment(F)
Direct
285 shares at avg. $158.96$45K
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Tax Payment(F)
Direct
184 shares at avg. $158.96$29K
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $158.96$288K
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Award(A)
Direct
4.6K shares-
FANG
Diamondback Energy, Inc.
Mar 1, 2025
Award(A)
Direct
3.5K shares-
FANG
Diamondback Energy, Inc.
Sep 10, 2024
Award(A)
Direct
5.2K shares-

		Type	Shares	Price		Ownership
Sep 10, 2026	FANG Diamondback Energy, Inc.	Tax Payment(F)	682	$202.63	$138,194	Direct
May 15, 2026	FANG Diamondback Energy, Inc.	Sale(S)	3,000	$204.04	$612,113	Direct
Mar 13, 2026	FANG Diamondback Energy, Inc.	Sale(S)	4,000	$182.90	$731,600	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Tax Payment(F)	281	$174.08	$48,916	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Award(A)	3,500	-	$0	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Tax Payment(F)	2,440	$174.08	$424,755	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Award(A)	6,430	-	$0	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Tax Payment(F)	460	$174.08	$80,077	Direct
Mar 1, 2026	FANG Diamondback Energy, Inc.	Tax Payment(F)	340	$174.08	$59,187	Direct
Sep 10, 2025	FANG Diamondback Energy, Inc.	Tax Payment(F)	682	$136.29	$92,950	Direct
Aug 19, 2025	VNOM VNOM Sub, Inc.	Disposition(D)	1,000	-	-	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Tax Payment(F)	340	$158.96	$54,046	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Tax Payment(F)	285	$158.96	$45,304	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Tax Payment(F)	184	$158.96	$29,249	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Tax Payment(F)	1,811	$158.96	$287,877	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Award(A)	4,615	-	-	Direct
Mar 1, 2025	FANG Diamondback Energy, Inc.	Award(A)	3,500	-	-	Direct
Sep 10, 2024	FANG Diamondback Energy, Inc.	Award(A)	5,193	-	$0	Direct

1-18 of 18 transactions

About Barkmann Albert

Barkmann Albert (SEC CIK 0002012976) files insider reports with the SEC as Exec. VP and Chief Engineer of Diamondback Energy, Inc. (FANG), Exec. VP and Chief Engineer of Viper Energy, Inc. (VNOM) and Exec. VP and Chief Engineer of VNOM Sub, Inc. (VNOM).

Signal8 holds 9 ownership filings by Barkmann Albert (1 Form 3, 8 Form 4), filed between Sep 12, 2024 and Sep 14, 2026. Those filings report 18 transactions, from Sep 10, 2024 to Sep 10, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Barkmann Albert's filings is in MIDLAND, TX.

Recent filings by Barkmann Albert

Sep 10, 2026: Tax withholding of FANG shares (Form 4, code F).
May 15, 2026: Open-market sale of FANG shares (Form 4, code S).
Mar 13, 2026: Open-market sale of FANG shares (Form 4, code S).
Mar 1, 2026: Tax withholding of FANG shares (Form 4, code F).
Mar 1, 2026: Grant or award of FANG shares (Form 4, code A).

Other insiders filing for Diamondback Energy, Inc. (FANG)

Meloy Charles Alvin, Director
SGF FANG Holdings, LP, 10% Owner
Zmigrosky Matt, EVP, Chief Legal and Admin Off
Dick Teresa L., EVP Accounting, Assist. Sec.
Stice Travis D., Director
Van't Hof Matthew Kaes, Chief Executive Officer

How to read Form 4 transaction codes