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Midcontinent Independent System Operator, INC.

Carmel, IN, 460824202

EIN 43-1827033
Plans
7
Total participants
13,119
Filing years
2024, 2023, 2022, 2021, 2020
NAICS
221100
Plan sponsors in IndianaUtilities

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001Miso Employees' Retirement Savings Plan1,153
2024Form 5500510Midcontinent Independent Systems Operator, INC. Employee Benefit Plan1,120
2024Form 5500-SF515Midcontinent Iso Retiree Medical Plan3
2023Form 5500001Miso Employees' Retirement Savings Plan1,086
2023Form 5500510Midcontinent Independent Systems Operator, INC. Employee Benefit Plan1,069
2023Form 5500-SF515Midcontinent Iso Retiree Medical Plan3
2022Form 5500001Miso Employees' Retirement Savings Plan1,028
2022Form 5500501Midcontinent Independent System Operator, INC. Flexible Benefits Plan0
2022Form 5500502Miso Voluntary Employee Beneficiary Association Plan And Trust0
2022Form 5500503Midcontinent Independent System Operator, INC. Employee Benefit Plan0
2022Form 5500-SF515Midcontinent Iso Retiree Medical Plan3
2021Form 5500001Miso Employees' Retirement Savings Plan977
2021Form 5500-SF002Midcontinent Iso Floor-Offset Plan0
2021Form 5500-SF002Midcontinent Iso Floor-Offset Plan0
2021Form 5500501Midcontinent Independent System Operator, INC. Flexible Benefits Plan966
2021Form 5500502Miso Voluntary Employee Beneficiary Association Plan And Trust924
2021Form 5500503Midcontinent Independent System Operator, INC. Employee Benefit Plan957
2021Form 5500-SF515Midcontinent Iso Retiree Medical Plan3
2020Form 5500001Miso Employees' Retirement Savings Plan971
2020Form 5500-SF002Midcontinent Iso Floor-Offset Plan14
2020Form 5500501Midcontinent Independent System Operator, INC. Flexible Benefits Plan966
2020Form 5500502Miso Voluntary Employee Beneficiary Association Plan And Trust913
2020Form 5500503Midcontinent Independent System Operator, INC. Employee Benefit Plan960
2020Form 5500-SF515Midcontinent Iso Retiree Medical Plan3

Data shown as filed with the U.S. Department of Labor (EBSA), filing years 2020–2025; not validated by OpenERISA. View official filings for this EIN on the DOL EFAST2 search.

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