Midamerican Energy Company Retirement Savings Plan

401(k) · DOL Form 5500 · 2023

What the Filing Says About Midamerican Energy Company Retirement Savings Plan

Midamerican Energy Company Retirement Savings Plan is a 401(k) retirement plan sponsored by Midamerican Energy Company, headquartered in Iowa. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $1.7B in total end-of-year assets and covers 5,056 participants across the Utilities industry. The sponsor's EIN on file with the U.S. Department of Labor is 421425214, and the plan has been effective since 1976-08-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets surged from $1.3B at the beginning of 2023 to $1.7B at year-end - up 32.6%. Net assets (after liabilities) closed the year at $1.7B, with reported net income of $282M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years Midamerican Energy Company has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $1.8B to $12.0B, a gain of 575.6%, while reported participants moved from 8,307 to 49,803 (+499.5%). The strongest year on file by total sponsor assets was 2024 at $12.0B; the softest was 2022 at $1.8B. Year-by-year, sponsor-wide filings show: 2022 - $1.8B in assets across 2 plans covering 8,307 participants; 2023 - $2.2B in assets across 2 plans covering 8,058 participants; 2024 - $12.0B in assets across 10 plans covering 49,803 participants.

By assets, Midamerican Energy Company Retirement Savings Plan outranks 99% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 17x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank Midamerican Energy Company Retirement Savings Plan against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.