Midwest Iso Inc.
Plan context: Midwest Iso Employees Retirement Savings Plan
EIN 43-1827033 • Carmel, IN • 159 filings • 22 plans
Current Snapshot
Latest Year
2024
2024 Participants
1,153
2024 Assets
$421,355,220
2024 Contributions
$32,397,739
Historical Graphs
Total Assets Over Time
Aggregate end-of-year assets by filing year, excluding zero-asset years
Participants Over Time
Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans
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 / Filing | Filings | Participants | Assets | Contributions | Contrib./Participant |
|---|---|---|---|---|---|
| 2024 | 3 | 1,153 | $421,355,220 | $32,397,739 | $28,099iApproximate average salary by contribution assumption: employee only about $702,466 at 4% or $468,311 at 6%; with 50% employer match about $468,311 at 4% or $312,207 at 6%; with 100% employer match about $351,233 at 4% or $234,155 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 1,153 | $421,189,434 | $32,397,739 | $28,099iApproximate average salary by contribution assumption: employee only about $702,466 at 4% or $468,311 at 6%; with 50% employer match about $468,311 at 4% or $312,207 at 6%; with 100% employer match about $351,233 at 4% or $234,155 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $165,786 | - | - |
| Midcontinent Independent Systems Operator Inc. Employee Benefit Plan | - | 1,120 | - | - | - |
| 2023 | 3 | 1,086 | $362,144,919 | $30,695,578 | $28,265iApproximate average salary by contribution assumption: employee only about $706,620 at 4% or $471,080 at 6%; with 50% employer match about $471,080 at 4% or $314,053 at 6%; with 100% employer match about $353,310 at 4% or $235,540 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 1,086 | $361,984,882 | $30,695,578 | $28,265iApproximate average salary by contribution assumption: employee only about $706,620 at 4% or $471,080 at 6%; with 50% employer match about $471,080 at 4% or $314,053 at 6%; with 100% employer match about $353,310 at 4% or $235,540 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $160,037 | - | - |
| Midcontinent Independent Systems Operator Inc. Employee Benefit Plan | - | 1,069 | - | - | - |
| 2022 | 5 | 1,028 | $303,595,516 | $26,290,905 | $25,575iApproximate average salary by contribution assumption: employee only about $639,370 at 4% or $426,247 at 6%; with 50% employer match about $426,247 at 4% or $284,165 at 6%; with 100% employer match about $319,685 at 4% or $213,123 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 1,028 | $303,440,699 | $26,290,905 | $25,575iApproximate average salary by contribution assumption: employee only about $639,370 at 4% or $426,247 at 6%; with 50% employer match about $426,247 at 4% or $284,165 at 6%; with 100% employer match about $319,685 at 4% or $213,123 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $154,817 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 0 | - | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 0 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 0 | - | - | - |
| 2021 | 6 | 977 | $371,628,469 | $42,230,613 | $43,225iApproximate average salary by contribution assumption: employee only about $1,080,620 at 4% or $720,413 at 6%; with 50% employer match about $720,413 at 4% or $480,275 at 6%; with 100% employer match about $540,310 at 4% or $360,207 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 977 | $371,473,539 | $24,884,856 | $25,471iApproximate average salary by contribution assumption: employee only about $636,767 at 4% or $424,511 at 6%; with 50% employer match about $424,511 at 4% or $283,008 at 6%; with 100% employer match about $318,384 at 4% or $212,256 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $154,930 | - | - |
| Midcontinent Iso Floor-Offset Plan | - | 0 | $0 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 966 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 957 | - | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 924 | - | $17,345,757 | $18,772iApproximate average salary by contribution assumption: employee only about $469,312 at 4% or $312,874 at 6%; with 50% employer match about $312,874 at 4% or $208,583 at 6%; with 100% employer match about $234,656 at 4% or $156,437 at 6%. |
| 2020 | 6 | 971 | $321,992,501 | $39,300,117 | $40,474iApproximate average salary by contribution assumption: employee only about $1,011,846 at 4% or $674,564 at 6%; with 50% employer match about $674,564 at 4% or $449,710 at 6%; with 100% employer match about $505,923 at 4% or $337,282 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 971 | $318,138,298 | $23,045,801 | $23,734iApproximate average salary by contribution assumption: employee only about $593,352 at 4% or $395,568 at 6%; with 50% employer match about $395,568 at 4% or $263,712 at 6%; with 100% employer match about $296,676 at 4% or $197,784 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 36 | $3,382,561 | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 913 | $314,250 | $16,254,316 | $17,803iApproximate average salary by contribution assumption: employee only about $445,080 at 4% or $296,720 at 6%; with 50% employer match about $296,720 at 4% or $197,813 at 6%; with 100% employer match about $222,540 at 4% or $148,360 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $157,392 | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 960 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 966 | - | - | - |
| 2019 | 6 | 973 | $273,132,072 | $37,328,690 | $38,365iApproximate average salary by contribution assumption: employee only about $959,113 at 4% or $639,409 at 6%; with 50% employer match about $639,409 at 4% or $426,273 at 6%; with 100% employer match about $479,557 at 4% or $319,704 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 973 | $268,944,040 | $21,556,486 | $22,155iApproximate average salary by contribution assumption: employee only about $553,867 at 4% or $369,244 at 6%; with 50% employer match about $369,244 at 4% or $246,163 at 6%; with 100% employer match about $276,933 at 4% or $184,622 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 36 | $3,099,609 | $250,000 | $6,944iApproximate average salary by contribution assumption: employee only about $173,611 at 4% or $115,741 at 6%; with 50% employer match about $115,741 at 4% or $77,160 at 6%; with 100% employer match about $86,806 at 4% or $57,870 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 906 | $924,121 | $15,522,204 | $17,133iApproximate average salary by contribution assumption: employee only about $428,317 at 4% or $285,545 at 6%; with 50% employer match about $285,545 at 4% or $190,363 at 6%; with 100% employer match about $214,158 at 4% or $142,772 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $164,302 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 966 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 955 | - | - | - |
| 2018 | 6 | 956 | $219,946,439 | $34,412,556 | $35,996iApproximate average salary by contribution assumption: employee only about $899,910 at 4% or $599,940 at 6%; with 50% employer match about $599,940 at 4% or $399,960 at 6%; with 100% employer match about $449,955 at 4% or $299,970 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 956 | $215,086,552 | $20,060,460 | $20,984iApproximate average salary by contribution assumption: employee only about $524,594 at 4% or $349,729 at 6%; with 50% employer match about $349,729 at 4% or $233,153 at 6%; with 100% employer match about $262,297 at 4% or $174,865 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 38 | $3,261,884 | $250,000 | $6,579iApproximate average salary by contribution assumption: employee only about $164,474 at 4% or $109,649 at 6%; with 50% employer match about $109,649 at 4% or $73,099 at 6%; with 100% employer match about $82,237 at 4% or $54,825 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 900 | $1,434,543 | $14,102,096 | $15,669iApproximate average salary by contribution assumption: employee only about $391,725 at 4% or $261,150 at 6%; with 50% employer match about $261,150 at 4% or $174,100 at 6%; with 100% employer match about $195,862 at 4% or $130,575 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $163,460 | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 955 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 952 | - | - | - |
| 2017 | 6 | 926 | $229,214,462 | $33,232,280 | $35,888iApproximate average salary by contribution assumption: employee only about $897,200 at 4% or $598,133 at 6%; with 50% employer match about $598,133 at 4% or $398,755 at 6%; with 100% employer match about $448,600 at 4% or $299,067 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 926 | $224,375,388 | $19,202,337 | $20,737iApproximate average salary by contribution assumption: employee only about $518,422 at 4% or $345,614 at 6%; with 50% employer match about $345,614 at 4% or $230,410 at 6%; with 100% employer match about $259,211 at 4% or $172,807 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 38 | $3,629,385 | $200,000 | $5,263iApproximate average salary by contribution assumption: employee only about $131,579 at 4% or $87,719 at 6%; with 50% employer match about $87,719 at 4% or $58,480 at 6%; with 100% employer match about $65,789 at 4% or $43,860 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 894 | $1,046,455 | $13,829,943 | $15,470iApproximate average salary by contribution assumption: employee only about $386,743 at 4% or $257,829 at 6%; with 50% employer match about $257,829 at 4% or $171,886 at 6%; with 100% employer match about $193,372 at 4% or $128,914 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $163,234 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 925 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 920 | - | - | - |
| 2016 | 6 | 891 | $189,570,897 | $31,303,408 | $35,133iApproximate average salary by contribution assumption: employee only about $878,322 at 4% or $585,548 at 6%; with 50% employer match about $585,548 at 4% or $390,365 at 6%; with 100% employer match about $439,161 at 4% or $292,774 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 888 | $185,625,004 | $18,203,722 | $20,500iApproximate average salary by contribution assumption: employee only about $512,492 at 4% or $341,661 at 6%; with 50% employer match about $341,661 at 4% or $227,774 at 6%; with 100% employer match about $256,246 at 4% or $170,831 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 38 | $3,105,423 | $400,000 | $10,526iApproximate average salary by contribution assumption: employee only about $263,158 at 4% or $175,439 at 6%; with 50% employer match about $175,439 at 4% or $116,959 at 6%; with 100% employer match about $131,579 at 4% or $87,719 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 837 | $675,922 | $12,699,686 | $15,173iApproximate average salary by contribution assumption: employee only about $379,322 at 4% or $252,881 at 6%; with 50% employer match about $252,881 at 4% or $168,587 at 6%; with 100% employer match about $189,661 at 4% or $126,441 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $164,548 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 845 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 891 | - | - | - |
| 2015 | 6 | 857 | $172,054,362 | $27,897,680 | $32,553iApproximate average salary by contribution assumption: employee only about $813,818 at 4% or $542,545 at 6%; with 50% employer match about $542,545 at 4% or $361,697 at 6%; with 100% employer match about $406,909 at 4% or $271,273 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 857 | $168,709,673 | $16,520,592 | $19,277iApproximate average salary by contribution assumption: employee only about $481,931 at 4% or $321,287 at 6%; with 50% employer match about $321,287 at 4% or $214,192 at 6%; with 100% employer match about $240,965 at 4% or $160,644 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 38 | $2,710,780 | $160,000 | $4,211iApproximate average salary by contribution assumption: employee only about $105,263 at 4% or $70,175 at 6%; with 50% employer match about $70,175 at 4% or $46,784 at 6%; with 100% employer match about $52,632 at 4% or $35,088 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 809 | $467,114 | $11,217,088 | $13,865iApproximate average salary by contribution assumption: employee only about $346,634 at 4% or $231,090 at 6%; with 50% employer match about $231,090 at 4% or $154,060 at 6%; with 100% employer match about $173,317 at 4% or $115,545 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $166,795 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 810 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 849 | - | - | - |
| 2014 | 6 | 841 | $165,262,134 | $28,218,276 | $33,553iApproximate average salary by contribution assumption: employee only about $838,831 at 4% or $559,221 at 6%; with 50% employer match about $559,221 at 4% or $372,814 at 6%; with 100% employer match about $419,416 at 4% or $279,610 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 841 | $161,571,490 | $15,979,292 | $19,000iApproximate average salary by contribution assumption: employee only about $475,009 at 4% or $316,672 at 6%; with 50% employer match about $316,672 at 4% or $211,115 at 6%; with 100% employer match about $237,504 at 4% or $158,336 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 39 | $2,622,373 | $150,000 | $3,846iApproximate average salary by contribution assumption: employee only about $96,154 at 4% or $64,103 at 6%; with 50% employer match about $64,103 at 4% or $42,735 at 6%; with 100% employer match about $48,077 at 4% or $32,051 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 787 | $899,038 | $12,088,984 | $15,361iApproximate average salary by contribution assumption: employee only about $384,021 at 4% or $256,014 at 6%; with 50% employer match about $256,014 at 4% or $170,676 at 6%; with 100% employer match about $192,011 at 4% or $128,007 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 3 | $169,233 | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 836 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 799 | - | - | - |
| 2013 | 6 | 799 | $148,306,253 | $24,890,438 | $31,152iApproximate average salary by contribution assumption: employee only about $778,800 at 4% or $519,200 at 6%; with 50% employer match about $519,200 at 4% or $346,133 at 6%; with 100% employer match about $389,400 at 4% or $259,600 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 795 | $144,602,634 | $14,719,237 | $18,515iApproximate average salary by contribution assumption: employee only about $462,869 at 4% or $308,579 at 6%; with 50% employer match about $308,579 at 4% or $205,720 at 6%; with 100% employer match about $231,435 at 4% or $154,290 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 39 | $2,459,865 | $100,000 | $2,564iApproximate average salary by contribution assumption: employee only about $64,103 at 4% or $42,735 at 6%; with 50% employer match about $42,735 at 4% or $28,490 at 6%; with 100% employer match about $32,051 at 4% or $21,368 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 744 | $1,072,081 | $10,071,201 | $13,537iApproximate average salary by contribution assumption: employee only about $338,414 at 4% or $225,609 at 6%; with 50% employer match about $225,609 at 4% or $150,406 at 6%; with 100% employer match about $169,207 at 4% or $112,805 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 2 | $171,673 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 764 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 799 | - | - | - |
| 2012 | 6 | 783 | $116,804,853 | $21,591,345 | $27,575iApproximate average salary by contribution assumption: employee only about $689,379 at 4% or $459,586 at 6%; with 50% employer match about $459,586 at 4% or $306,391 at 6%; with 100% employer match about $344,689 at 4% or $229,793 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 767 | $113,214,141 | $13,235,632 | $17,256iApproximate average salary by contribution assumption: employee only about $431,409 at 4% or $287,606 at 6%; with 50% employer match about $287,606 at 4% or $191,737 at 6%; with 100% employer match about $215,705 at 4% or $143,803 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 40 | $2,624,523 | $104,000 | $2,600iApproximate average salary by contribution assumption: employee only about $65,000 at 4% or $43,333 at 6%; with 50% employer match about $43,333 at 4% or $28,889 at 6%; with 100% employer match about $32,500 at 4% or $21,667 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 720 | $792,001 | $8,251,713 | $11,461iApproximate average salary by contribution assumption: employee only about $286,518 at 4% or $191,012 at 6%; with 50% employer match about $191,012 at 4% or $127,341 at 6%; with 100% employer match about $143,259 at 4% or $95,506 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 2 | $174,188 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 573 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 783 | - | - | - |
| 2011 | 6 | 731 | $97,874,077 | $21,376,716 | $29,243iApproximate average salary by contribution assumption: employee only about $731,078 at 4% or $487,385 at 6%; with 50% employer match about $487,385 at 4% or $324,923 at 6%; with 100% employer match about $365,539 at 4% or $243,693 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 719 | $94,249,999 | $12,994,692 | $18,073iApproximate average salary by contribution assumption: employee only about $451,832 at 4% or $301,221 at 6%; with 50% employer match about $301,221 at 4% or $200,814 at 6%; with 100% employer match about $225,916 at 4% or $150,611 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 42 | $2,481,795 | $186,477 | $4,440iApproximate average salary by contribution assumption: employee only about $110,998 at 4% or $73,999 at 6%; with 50% employer match about $73,999 at 4% or $49,333 at 6%; with 100% employer match about $55,499 at 4% or $36,999 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 668 | $965,721 | $8,195,547 | $12,269iApproximate average salary by contribution assumption: employee only about $306,720 at 4% or $204,480 at 6%; with 50% employer match about $204,480 at 4% or $136,320 at 6%; with 100% employer match about $153,360 at 4% or $102,240 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $176,562 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 610 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 731 | - | - | - |
| 2010 | 8 | 782 | $92,734,999 | $21,670,635 | $27,712iApproximate average salary by contribution assumption: employee only about $692,795 at 4% or $461,863 at 6%; with 50% employer match about $461,863 at 4% or $307,909 at 6%; with 100% employer match about $346,398 at 4% or $230,932 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 775 | $89,226,704 | $13,171,872 | $16,996iApproximate average salary by contribution assumption: employee only about $424,899 at 4% or $283,266 at 6%; with 50% employer match about $283,266 at 4% or $188,844 at 6%; with 100% employer match about $212,450 at 4% or $141,633 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 44 | $2,393,955 | $123,631 | $2,810iApproximate average salary by contribution assumption: employee only about $70,245 at 4% or $46,830 at 6%; with 50% employer match about $46,830 at 4% or $31,220 at 6%; with 100% employer match about $35,122 at 4% or $23,415 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 728 | $935,368 | $8,375,132 | $11,504iApproximate average salary by contribution assumption: employee only about $287,608 at 4% or $191,738 at 6%; with 50% employer match about $191,738 at 4% or $127,826 at 6%; with 100% employer match about $143,804 at 4% or $95,869 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $178,972 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 572 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 782 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 0 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 0 | - | - | - |
| 2009 | 8 | 777 | $71,435,528 | $20,219,380 | $26,022iApproximate average salary by contribution assumption: employee only about $650,559 at 4% or $433,706 at 6%; with 50% employer match about $433,706 at 4% or $289,137 at 6%; with 100% employer match about $325,280 at 4% or $216,853 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 776 | $68,699,019 | $12,480,620 | $16,083iApproximate average salary by contribution assumption: employee only about $402,082 at 4% or $268,055 at 6%; with 50% employer match about $268,055 at 4% or $178,703 at 6%; with 100% employer match about $201,041 at 4% or $134,027 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 44 | $2,054,419 | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 718 | $500,966 | $7,738,760 | $10,778iApproximate average salary by contribution assumption: employee only about $269,455 at 4% or $179,637 at 6%; with 50% employer match about $179,637 at 4% or $119,758 at 6%; with 100% employer match about $134,728 at 4% or $89,818 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $181,124 | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 697 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 777 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 243 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 775 | - | - | - |
| 2008 | 9 | 733 | $47,556,068 | $16,123,138 | $21,996iApproximate average salary by contribution assumption: employee only about $549,902 at 4% or $366,602 at 6%; with 50% employer match about $366,602 at 4% or $244,401 at 6%; with 100% employer match about $274,951 at 4% or $183,301 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 727 | $45,535,243 | $11,176,769 | $15,374iApproximate average salary by contribution assumption: employee only about $384,346 at 4% or $256,230 at 6%; with 50% employer match about $256,230 at 4% or $170,820 at 6%; with 100% employer match about $192,173 at 4% or $128,115 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 40 | $1,697,499 | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 674 | $323,326 | $4,946,369 | $7,339iApproximate average salary by contribution assumption: employee only about $183,471 at 4% or $122,314 at 6%; with 50% employer match about $122,314 at 4% or $81,543 at 6%; with 100% employer match about $91,735 at 4% or $61,157 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 590 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 733 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 730 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 0 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 231 | - | - | - |
| 2007 | 9 | 688 | $55,450,297 | $15,489,694 | $22,514iApproximate average salary by contribution assumption: employee only about $562,852 at 4% or $375,235 at 6%; with 50% employer match about $375,235 at 4% or $250,157 at 6%; with 100% employer match about $281,426 at 4% or $187,617 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 688 | $54,978,809 | $10,654,080 | $15,486iApproximate average salary by contribution assumption: employee only about $387,140 at 4% or $258,093 at 6%; with 50% employer match about $258,093 at 4% or $172,062 at 6%; with 100% employer match about $193,570 at 4% or $129,047 at 6%. |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 635 | $471,488 | $4,835,614 | $7,615iApproximate average salary by contribution assumption: employee only about $190,379 at 4% or $126,919 at 6%; with 50% employer match about $126,919 at 4% or $84,613 at 6%; with 100% employer match about $95,189 at 4% or $63,460 at 6%. |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 667 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 463 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 191 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 679 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 680 | - | - | - |
| Midcontinent Iso Floor-Offset Plan | - | 40 | - | - | - |
| Midwest Iso Retiree Medical Plan | - | 4 | - | - | - |
| 2006 | 9 | 638 | $46,307,339 | $9,897,493 | $15,513iApproximate average salary by contribution assumption: employee only about $387,833 at 4% or $258,555 at 6%; with 50% employer match about $258,555 at 4% or $172,370 at 6%; with 100% employer match about $193,916 at 4% or $129,278 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 638 | $43,677,137 | $9,803,688 | $15,366iApproximate average salary by contribution assumption: employee only about $384,157 at 4% or $256,105 at 6%; with 50% employer match about $256,105 at 4% or $170,736 at 6%; with 100% employer match about $192,079 at 4% or $128,052 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 45 | $2,476,632 | $93,805 | $2,085iApproximate average salary by contribution assumption: employee only about $52,114 at 4% or $34,743 at 6%; with 50% employer match about $34,743 at 4% or $23,162 at 6%; with 100% employer match about $26,057 at 4% or $17,371 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $153,570 | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 623 | - | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 597 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 454 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 182 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 632 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 633 | - | - | - |
| 2005 | 10 | 590 | $33,647,358 | $8,850,407 | $15,001iApproximate average salary by contribution assumption: employee only about $375,017 at 4% or $250,011 at 6%; with 50% employer match about $250,011 at 4% or $166,674 at 6%; with 100% employer match about $187,509 at 4% or $125,006 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 590 | $31,302,862 | $8,821,833 | $14,952iApproximate average salary by contribution assumption: employee only about $373,806 at 4% or $249,204 at 6%; with 50% employer match about $249,204 at 4% or $166,136 at 6%; with 100% employer match about $186,903 at 4% or $124,602 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 51 | $2,176,563 | $28,574 | $560iApproximate average salary by contribution assumption: employee only about $14,007 at 4% or $9,338 at 6%; with 50% employer match about $9,338 at 4% or $6,225 at 6%; with 100% employer match about $7,003 at 4% or $4,669 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $167,933 | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 163 | - | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 558 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 565 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 581 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 581 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP VISION PLAN | - | 0 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 264 | - | - | - |
| 2004 | 9 | 510 | $23,624,359 | $7,297,311 | $14,308iApproximate average salary by contribution assumption: employee only about $357,711 at 4% or $238,474 at 6%; with 50% employer match about $238,474 at 4% or $158,983 at 6%; with 100% employer match about $178,856 at 4% or $119,237 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 510 | $21,408,341 | $7,268,385 | $14,252iApproximate average salary by contribution assumption: employee only about $356,293 at 4% or $237,529 at 6%; with 50% employer match about $237,529 at 4% or $158,353 at 6%; with 100% employer match about $178,147 at 4% or $118,764 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 56 | $2,048,994 | $28,926 | $517iApproximate average salary by contribution assumption: employee only about $12,913 at 4% or $8,609 at 6%; with 50% employer match about $8,609 at 4% or $5,739 at 6%; with 100% employer match about $6,457 at 4% or $4,304 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $167,024 | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 378 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 469 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 505 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 505 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Voluntary Life Plan | - | 129 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP VISION PLAN | - | 460 | - | - | - |
| 2003 | 8 | 335 | $14,554,159 | $4,603,287 | $13,741iApproximate average salary by contribution assumption: employee only about $343,529 at 4% or $229,019 at 6%; with 50% employer match about $229,019 at 4% or $152,680 at 6%; with 100% employer match about $171,764 at 4% or $114,510 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 335 | $12,459,101 | $4,537,559 | $13,545iApproximate average salary by contribution assumption: employee only about $338,624 at 4% or $225,749 at 6%; with 50% employer match about $225,749 at 4% or $150,499 at 6%; with 100% employer match about $169,312 at 4% or $112,875 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 63 | $1,925,274 | $65,728 | $1,043iApproximate average salary by contribution assumption: employee only about $26,083 at 4% or $17,388 at 6%; with 50% employer match about $17,388 at 4% or $11,592 at 6%; with 100% employer match about $13,041 at 4% or $8,694 at 6%. |
| Midwest Iso Retiree Medical Plan | - | 4 | $169,784 | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP VISION PLAN | - | 306 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 335 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 335 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 315 | - | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 242 | - | - | - |
| 2002 | 8 | 229 | $7,916,236 | $3,958,876 | $17,288iApproximate average salary by contribution assumption: employee only about $432,192 at 4% or $288,128 at 6%; with 50% employer match about $288,128 at 4% or $192,085 at 6%; with 100% employer match about $216,096 at 4% or $144,064 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 228 | $6,247,839 | $3,958,876 | $17,363iApproximate average salary by contribution assumption: employee only about $434,087 at 4% or $289,392 at 6%; with 50% employer match about $289,392 at 4% or $192,928 at 6%; with 100% employer match about $217,044 at 4% or $144,696 at 6%. |
| Midcontinent Iso Floor-Offset Plan | - | 67 | $1,668,397 | - | - |
| Miso Voluntary Employee Beneficiary Association Plan and Trust | - | 207 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP LTD PLAN | - | 229 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Dental Plan | - | 210 | - | - | - |
| MIDWEST INDEPENDENT TRANSMISSION SYSTEM OPERATOR, INC. GROUP VISION PLAN | - | 205 | - | - | - |
| Midwest Independent Transmission System Operator Inc. Group Life Plan | - | 229 | - | - | - |
| Midwest Iso Retiree Medical Plan | - | 4 | - | - | - |
| 2001 | 1 | 171 | $2,929,822 | $1,965,144 | $11,492iApproximate average salary by contribution assumption: employee only about $287,302 at 4% or $191,535 at 6%; with 50% employer match about $191,535 at 4% or $127,690 at 6%; with 100% employer match about $143,651 at 4% or $95,767 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 171 | $2,929,822 | $1,965,144 | $11,492iApproximate average salary by contribution assumption: employee only about $287,302 at 4% or $191,535 at 6%; with 50% employer match about $191,535 at 4% or $127,690 at 6%; with 100% employer match about $143,651 at 4% or $95,767 at 6%. |
| 2000 | 2 | 77 | $1,362,415 | $1,567,999 | $20,364iApproximate average salary by contribution assumption: employee only about $509,091 at 4% or $339,394 at 6%; with 50% employer match about $339,394 at 4% or $226,262 at 6%; with 100% employer match about $254,545 at 4% or $169,697 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 77 | $1,362,415 | $1,567,999 | $20,364iApproximate average salary by contribution assumption: employee only about $509,091 at 4% or $339,394 at 6%; with 50% employer match about $339,394 at 4% or $226,262 at 6%; with 100% employer match about $254,545 at 4% or $169,697 at 6%. |
| Midwest Independent Transmission System Operator Inc. Flexible Benefits Plan | - | 77 | - | - | - |
| 1999 | 1 | 5 | $19,780 | $19,780 | $3,956iApproximate average salary by contribution assumption: employee only about $98,900 at 4% or $65,933 at 6%; with 50% employer match about $65,933 at 4% or $43,956 at 6%; with 100% employer match about $49,450 at 4% or $32,967 at 6%. |
| Midwest Iso Employees Retirement Savings Plan | - | 5 | $19,780 | $19,780 | $3,956iApproximate average salary by contribution assumption: employee only about $98,900 at 4% or $65,933 at 6%; with 50% employer match about $65,933 at 4% or $43,956 at 6%; with 100% employer match about $49,450 at 4% or $32,967 at 6%. |