Civic Intelligence

Diamondback E&P LLC

Plan context: Diamondback E & P LLC 401(K) Plan

EIN 36-4728559 • Oaklahoma City, OK • 36 filings • 7 plans

900 NW 63rd St Suite 200Oaklahoma City, OK 73116
Current Snapshot

Latest Year

2025

2025 Participants

1,815

2025 Assets

$428,918,514

2025 Contributions

$30,492,629

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$428,918,514$214,459,257$0201220182024YearValue
$428,918,514Latest year 2024

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

1,8159080201220192025YearValue
1,815Latest year 2025

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
202511,815$0$0-
Diamondback E&P LLC Employee Benefits Plan-1,815---
202461,029$428,918,514$30,492,629$29,633iApproximate average salary by contribution assumption: employee only about $740,832 at 4% or $493,888 at 6%; with 50% employer match about $493,888 at 4% or $329,258 at 6%; with 100% employer match about $370,416 at 4% or $246,944 at 6%.
Diamondback E & P LLC 401(K) Plan-1,028$250,748,021$30,480,212$29,650iApproximate average salary by contribution assumption: employee only about $741,250 at 4% or $494,167 at 6%; with 50% employer match about $494,167 at 4% or $329,445 at 6%; with 100% employer match about $370,625 at 4% or $247,083 at 6%.
Diamondback E & P LLC 401(K) Plan-1$84,387,181--
Qep Resources Inc. Retirement Plan-1$84,387,181--
Energen Corporation Retiree Welfare Plan-0$7,914,426$12,417-
The Energen Corporation Employee Stock Ownership Plan-11$1,481,705--
Diamondback E&P LLC Employee Benefits Plan-1,029---
202361,016$408,083,448$28,363,943$27,917iApproximate average salary by contribution assumption: employee only about $697,932 at 4% or $465,288 at 6%; with 50% employer match about $465,288 at 4% or $310,192 at 6%; with 100% employer match about $348,966 at 4% or $232,644 at 6%.
Diamondback E & P LLC 401(K) Plan-1,016$211,838,102$28,333,834$27,888iApproximate average salary by contribution assumption: employee only about $697,191 at 4% or $464,794 at 6%; with 50% employer match about $464,794 at 4% or $309,863 at 6%; with 100% employer match about $348,595 at 4% or $232,397 at 6%.
Diamondback E & P LLC 401(K) Plan-1$93,436,164--
Qep Resources Inc. Retirement Plan-1$93,436,164--
Energen Corporation Retiree Welfare Plan-0$7,937,386$30,109-
The Energen Corporation Employee Stock Ownership Plan-40$1,435,632$0-
Diamondback E&P LLC Employee Benefits Plan-1,014---
20223954$168,641,561$24,350,699$25,525iApproximate average salary by contribution assumption: employee only about $638,121 at 4% or $425,414 at 6%; with 50% employer match about $425,414 at 4% or $283,609 at 6%; with 100% employer match about $319,061 at 4% or $212,707 at 6%.
Diamondback E & P LLC 401(K) Plan-954$166,747,782$24,350,699$25,525iApproximate average salary by contribution assumption: employee only about $638,121 at 4% or $425,414 at 6%; with 50% employer match about $425,414 at 4% or $283,609 at 6%; with 100% employer match about $319,061 at 4% or $212,707 at 6%.
The Energen Corporation Employee Stock Ownership Plan-48$1,893,779$0-
Diamondback E&P LLC Employee Benefits Plan-911---
20213942$201,298,669$21,239,230$22,547iApproximate average salary by contribution assumption: employee only about $563,674 at 4% or $375,783 at 6%; with 50% employer match about $375,783 at 4% or $250,522 at 6%; with 100% employer match about $281,837 at 4% or $187,891 at 6%.
Diamondback E & P LLC 401(K) Plan-887$199,342,268$21,239,230$23,945iApproximate average salary by contribution assumption: employee only about $598,625 at 4% or $399,084 at 6%; with 50% employer match about $399,084 at 4% or $266,056 at 6%; with 100% employer match about $299,313 at 4% or $199,542 at 6%.
The Energen Corporation Employee Stock Ownership Plan-51$1,956,401$0-
Diamondback E&P LLC Employee Benefits Plan-942---
20203737$99,736,664$17,206,884$23,347iApproximate average salary by contribution assumption: employee only about $583,680 at 4% or $389,120 at 6%; with 50% employer match about $389,120 at 4% or $259,413 at 6%; with 100% employer match about $291,840 at 4% or $194,560 at 6%.
Diamondback E & P LLC 401(K) Plan-731$98,053,209$17,206,884$23,539iApproximate average salary by contribution assumption: employee only about $588,471 at 4% or $392,314 at 6%; with 50% employer match about $392,314 at 4% or $261,543 at 6%; with 100% employer match about $294,235 at 4% or $196,157 at 6%.
The Energen Corporation Employee Stock Ownership Plan-56$1,683,455--
Diamondback E&P LLC Employee Benefits Plan-737---
20193702$84,017,188$17,489,473$24,914iApproximate average salary by contribution assumption: employee only about $622,844 at 4% or $415,230 at 6%; with 50% employer match about $415,230 at 4% or $276,820 at 6%; with 100% employer match about $311,422 at 4% or $207,615 at 6%.
Diamondback E & P LLC 401(K) Plan-696$81,227,443$17,489,473$25,129iApproximate average salary by contribution assumption: employee only about $628,214 at 4% or $418,809 at 6%; with 50% employer match about $418,809 at 4% or $279,206 at 6%; with 100% employer match about $314,107 at 4% or $209,405 at 6%.
The Energen Corporation Employee Stock Ownership Plan-84$2,789,745--
Diamondback E&P LLC Employee Benefits Plan-702---
20182713$20,266,183$7,078,855$9,928iApproximate average salary by contribution assumption: employee only about $248,207 at 4% or $165,471 at 6%; with 50% employer match about $165,471 at 4% or $110,314 at 6%; with 100% employer match about $124,103 at 4% or $82,736 at 6%.
Diamondback E & P LLC 401(K) Plan-347$20,266,183$7,078,855$20,400iApproximate average salary by contribution assumption: employee only about $510,004 at 4% or $340,003 at 6%; with 50% employer match about $340,003 at 4% or $226,668 at 6%; with 100% employer match about $255,002 at 4% or $170,001 at 6%.
Diamondback E&P LLC Employee Benefits Plan-713---
20172276$16,072,839$5,193,916$18,819iApproximate average salary by contribution assumption: employee only about $470,463 at 4% or $313,642 at 6%; with 50% employer match about $313,642 at 4% or $209,095 at 6%; with 100% employer match about $235,232 at 4% or $156,821 at 6%.
Diamondback E & P LLC 401(K) Plan-244$16,072,839$5,193,916$21,287iApproximate average salary by contribution assumption: employee only about $532,164 at 4% or $354,776 at 6%; with 50% employer match about $354,776 at 4% or $236,517 at 6%; with 100% employer match about $266,082 at 4% or $177,388 at 6%.
Diamondback E&P LLC Employee Benefits Plan-276---
20162198$9,847,633$3,759,934$18,990iApproximate average salary by contribution assumption: employee only about $474,739 at 4% or $316,493 at 6%; with 50% employer match about $316,493 at 4% or $210,995 at 6%; with 100% employer match about $237,370 at 4% or $158,246 at 6%.
Diamondback E & P LLC 401(K) Plan-157$9,847,633$3,759,934$23,949iApproximate average salary by contribution assumption: employee only about $598,716 at 4% or $399,144 at 6%; with 50% employer match about $399,144 at 4% or $266,096 at 6%; with 100% employer match about $299,358 at 4% or $199,572 at 6%.
Diamondback E&P LLC Employee Benefits Plan-198---
20152141$5,614,599$2,946,890$20,900iApproximate average salary by contribution assumption: employee only about $522,498 at 4% or $348,332 at 6%; with 50% employer match about $348,332 at 4% or $232,221 at 6%; with 100% employer match about $261,249 at 4% or $174,166 at 6%.
Diamondback E & P LLC 401(K) Plan-141$5,614,599$2,946,890$20,900iApproximate average salary by contribution assumption: employee only about $522,498 at 4% or $348,332 at 6%; with 50% employer match about $348,332 at 4% or $232,221 at 6%; with 100% employer match about $261,249 at 4% or $174,166 at 6%.
Diamondback E&P LLC Employee Benefits Plan-138---
2014178$3,022,148$1,365,195$17,503iApproximate average salary by contribution assumption: employee only about $437,563 at 4% or $291,708 at 6%; with 50% employer match about $291,708 at 4% or $194,472 at 6%; with 100% employer match about $218,781 at 4% or $145,854 at 6%.
Diamondback E & P LLC 401(K) Plan-78$3,022,148$1,365,195$17,503iApproximate average salary by contribution assumption: employee only about $437,563 at 4% or $291,708 at 6%; with 50% employer match about $291,708 at 4% or $194,472 at 6%; with 100% employer match about $218,781 at 4% or $145,854 at 6%.
2013138$1,658,812$861,672$22,676iApproximate average salary by contribution assumption: employee only about $566,889 at 4% or $377,926 at 6%; with 50% employer match about $377,926 at 4% or $251,951 at 6%; with 100% employer match about $283,445 at 4% or $188,963 at 6%.
Diamondback E & P LLC 401(K) Plan-38$1,658,812$861,672$22,676iApproximate average salary by contribution assumption: employee only about $566,889 at 4% or $377,926 at 6%; with 50% employer match about $377,926 at 4% or $251,951 at 6%; with 100% employer match about $283,445 at 4% or $188,963 at 6%.
2012131$995,041$178,777$5,767iApproximate average salary by contribution assumption: employee only about $144,175 at 4% or $96,117 at 6%; with 50% employer match about $96,117 at 4% or $64,078 at 6%; with 100% employer match about $72,088 at 4% or $48,058 at 6%.
Diamondback E & P LLC 401(K) Plan-31$995,041$178,777$5,767iApproximate average salary by contribution assumption: employee only about $144,175 at 4% or $96,117 at 6%; with 50% employer match about $96,117 at 4% or $64,078 at 6%; with 100% employer match about $72,088 at 4% or $48,058 at 6%.