MG Oil Company

Rapid City, SD Wholesale tradeNAICS 424700

Self-funded health planPlan year 2025Renews January
650Participants+54% vs. prior year
$1.5MEst. pharmacy spend / yrParticipants × national avg.
Jan 2027Next renewalPlan year begins January 1
#1 of 1Wholesale trade in SDBy participants

Overview

MG Oil Company sponsors a self-funded health plan that covered 650 participants in plan year 2025, up 54% from the prior year. The plan year starts in January. Alongside medical, its benefits filing reports life insurance, dental, vision, long-term disability.

Plan type
ERISA welfare benefit plan, self-funded (benefits paid from employer assets or a trust)
Participants
650 · prior year 423
Plan year
Begins January 1 · next renewal January 2027
Health plans filed
MG Oil Welfare Benefit Plan, plan 501 (650 participants)
Stop-loss carrier
Wellmark Blue Cross and Blue Shield of South Dakota
Broker compensation
$121K across insured contracts
MedicalLife insuranceDentalVisionLong-term disability

Insurance carriers

Insured coverage reported on Schedule A. Self-funded medical claims aren't reported there.

CarrierCoverageCoveredPremiumBroker comp
Wellmark Blue Cross and Blue Shield of South DakotaMedical, Stop-loss278$2.9M$35K
AflacLife, Short-term disability, Long-term disability340$334K$80K
Standard Insurance CompanyLife161$20K$4K
Optilegra Inc.Vision176$14K$1K
Delta Dental of South DakotaDental236—$700

Pharmacy benefit estimate

StreamRX estimate for a plan this size. Not based on this plan's claims.

$1.5M/ year

Estimated prescription spend: 650 participants × $2,371 national average per member. Usually higher once dependents are counted.

$40K–$99K/ year

Typical savings opportunity found in independent reviews of plans this size.

Brands with a generic available$12K–$29K
Lower-cost therapeutic alternatives$17K–$36K
Generic pricing vs. actual cost$7K–$22K
PBM contract terms$4K–$12K
The DOL's PBM fee disclosure rule first applies to this plan for the plan year beginning January 2028: semiannual PBM compensation reports and an annual audit right.

Form 5500 filing details

Filing
Form 5500 with Schedule A, plan year 2025
Plan sponsor
MG Oil Company
Sponsor EIN
46-0344091
Plan number
501
Filed with
U.S. Department of Labor (EBSA) via EFAST2

Verify this filing: search EIN 46-0344091 in the Department of Labor's EFAST2 Form 5500 search.

Retirement plan

Plan
M.g. Oil Company 401(k) Plan
Type
401(k) plan
Participants
983

About this data

Source: MG Oil Company's Form 5500 filing for plan year 2025 and its Schedule A insurance reports, published by the U.S. Department of Labor. "Self-funded" means the filing reports benefits paid from employer assets or a trust, with no medical insurance contract or with a stop-loss contract. Pharmacy figures are StreamRX estimates based on national averages. StreamRX is not affiliated with MG Oil Company.

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