Health Plan – Preferred provider organization (PPO) Plan and High deductible health plan (HDHP)
Summary Plan Descriptions
Other Health Plan Documents
Summary and Benefits Coverage
Legal Documents
Prescription Drug Lists
Life and Accidental Death & Dismemberment (AD&D) Insurance
Cafeteria plan
Summary Plan Descriptions
Long-Term Disability
Employee Stock Purchase Plan (ESPP)
pension Plans
ONEOK, Inc. Retirement Plan Summary Plan Description
ONEOK, Inc. Retirement Plan Annual Funding Notice
Magellan USW Pension Plan - Final Average Pay Summary Plan Description
Magellan USW Pension Plan - Cash Balance Formula Summary Plan Description
Magellan USW Pension Plan Annual Funding Notice
Magellan Pension Plan - Final Average Pay Summary Plan Description
Magellan Pension Plan - Cash Balance Formula Summary Plan Description
Other Benefits
Summary Annual Reports
ONEOK, Inc. Welfare Benefits Wraparound Plan
2025 EnLink Midstream Operating, LP Health Plan
2025 EnLink Midstream Operating, LP Life, Accident and LTD Benefits Plan
2024 EnLink Midstream Operating, LP Health Plan
2024 EnLink Midstream Operating, LP Life, Accident and LTD Benefits Plan
EnLink Midstream Operating, LP 401(k) Trust
Transparency Compliance – Machine Readable Files
UnitedHealthcare creates and publishes the Machine-Readable Files (MRFs) on behalf of ONEOK, Inc. View the Machine-Readable Files here.
- Press Ctrl-F on your keyboard.
- Type ONEOK in the search bar to display the associated MRFs
Lyra (EAP) creates and publishes the Machine-Readable Files (MRFs) on behalf of ONEOK, Inc. View the Machine-Readable Files here.

