Ameren Corporation
Plan context: Central Illinois Public Service Co Retirement Income Plan
EIN 43-1723446 • St. Louis, MO • 214 filings • 45 plans
Current Snapshot
Latest Year
2024
2024 Participants
9,197
2024 Assets
$9,330,931,660
2024 Contributions
$358,146,564
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 | 5 | 9,197 | $9,330,931,660 | $358,146,564 | $38,942iApproximate average salary by contribution assumption: employee only about $973,542 at 4% or $649,028 at 6%; with 50% employer match about $649,028 at 4% or $432,685 at 6%; with 100% employer match about $486,771 at 4% or $324,514 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,113 | $4,799,287,759 | - | - |
| Ameren Savings Investment Plan | - | 9,085 | $3,209,433,257 | $184,244,071 | $20,280iApproximate average salary by contribution assumption: employee only about $507,001 at 4% or $338,000 at 6%; with 50% employer match about $338,000 at 4% or $225,334 at 6%; with 100% employer match about $253,500 at 4% or $169,000 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | 0 | $1,296,006,140 | $9,971,884 | - |
| Group Major Medical Expense Benefit Plan | - | 8,742 | $26,204,504 | $163,930,609 | $18,752iApproximate average salary by contribution assumption: employee only about $468,802 at 4% or $312,535 at 6%; with 50% employer match about $312,535 at 4% or $208,356 at 6%; with 100% employer match about $234,401 at 4% or $156,267 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,197 | - | - | - |
| 2023 | 6 | 9,543 | $9,634,971,043 | $354,344,889 | $37,131iApproximate average salary by contribution assumption: employee only about $928,285 at 4% or $618,857 at 6%; with 50% employer match about $618,857 at 4% or $412,571 at 6%; with 100% employer match about $464,142 at 4% or $309,428 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,543 | $4,709,766,277 | $188 | $0iApproximate average salary by contribution assumption: employee only about $0 at 4% or $0 at 6%; with 50% employer match about $0 at 4% or $0 at 6%; with 100% employer match about $0 at 4% or $0 at 6%. |
| Ameren Savings Investment Plan | - | 9,504 | $2,971,481,023 | $190,304,197 | $20,024iApproximate average salary by contribution assumption: employee only about $500,590 at 4% or $333,726 at 6%; with 50% employer match about $333,726 at 4% or $222,484 at 6%; with 100% employer match about $250,295 at 4% or $166,863 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | 0 | $1,200,097,570 | $9,887,019 | - |
| Ameren Health and Welfare Trust | - | - | $727,930,116 | - | - |
| Group Major Medical Expense Benefit Plan | - | 9,100 | $25,696,057 | $154,153,485 | $16,940iApproximate average salary by contribution assumption: employee only about $423,499 at 4% or $282,332 at 6%; with 50% employer match about $282,332 at 4% or $188,222 at 6%; with 100% employer match about $211,749 at 4% or $141,166 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,533 | - | - | - |
| 2022 | 6 | 9,437 | $8,995,853,405 | $298,323,957 | $31,612iApproximate average salary by contribution assumption: employee only about $790,304 at 4% or $526,869 at 6%; with 50% employer match about $526,869 at 4% or $351,246 at 6%; with 100% employer match about $395,152 at 4% or $263,435 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,436 | $4,442,367,346 | $2,600,000 | $276iApproximate average salary by contribution assumption: employee only about $6,889 at 4% or $4,592 at 6%; with 50% employer match about $4,592 at 4% or $3,062 at 6%; with 100% employer match about $3,444 at 4% or $2,296 at 6%. |
| Ameren Savings Investment Plan | - | 9,328 | $2,709,348,496 | $140,388,584 | $15,050iApproximate average salary by contribution assumption: employee only about $376,256 at 4% or $250,837 at 6%; with 50% employer match about $250,837 at 4% or $167,225 at 6%; with 100% employer match about $188,128 at 4% or $125,419 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | 0 | $1,078,982,800 | $10,197,166 | - |
| Ameren Health and Welfare Trust | - | - | $740,795,205 | - | - |
| Group Major Medical Expense Benefit Plan | - | 9,042 | $24,359,558 | $145,138,207 | $16,052iApproximate average salary by contribution assumption: employee only about $401,289 at 4% or $267,526 at 6%; with 50% employer match about $267,526 at 4% or $178,351 at 6%; with 100% employer match about $200,645 at 4% or $133,763 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,437 | - | - | - |
| 2021 | 6 | 9,307 | $9,108,478,326 | $375,550,710 | $40,351iApproximate average salary by contribution assumption: employee only about $1,008,786 at 4% or $672,524 at 6%; with 50% employer match about $672,524 at 4% or $448,349 at 6%; with 100% employer match about $504,393 at 4% or $336,262 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,976 | $4,070,888,708 | $79,200,000 | $8,824iApproximate average salary by contribution assumption: employee only about $220,588 at 4% or $147,059 at 6%; with 50% employer match about $147,059 at 4% or $98,039 at 6%; with 100% employer match about $110,294 at 4% or $73,529 at 6%. |
| Ameren Savings Investment Plan | - | 9,307 | $3,323,561,545 | $150,896,740 | $16,213iApproximate average salary by contribution assumption: employee only about $405,331 at 4% or $270,221 at 6%; with 50% employer match about $270,221 at 4% or $180,147 at 6%; with 100% employer match about $202,666 at 4% or $135,110 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $970,943,621 | $9,385,135 | - |
| Ameren Health and Welfare Trust | - | - | $724,316,839 | - | - |
| Group Major Medical Expense Benefit Plan | - | 9,010 | $18,767,613 | $136,068,835 | $15,102iApproximate average salary by contribution assumption: employee only about $377,549 at 4% or $251,700 at 6%; with 50% employer match about $251,700 at 4% or $167,800 at 6%; with 100% employer match about $188,775 at 4% or $125,850 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,819 | - | - | - |
| 2020 | 6 | 9,511 | $11,192,364,086 | $293,850,439 | $30,896iApproximate average salary by contribution assumption: employee only about $772,396 at 4% or $514,931 at 6%; with 50% employer match about $514,931 at 4% or $343,287 at 6%; with 100% employer match about $386,198 at 4% or $257,465 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,397 | $6,026,141,549 | - | - |
| Ameren Savings Investment Plan | - | 9,511 | $3,047,330,234 | $147,566,912 | $15,515iApproximate average salary by contribution assumption: employee only about $387,885 at 4% or $258,590 at 6%; with 50% employer match about $258,590 at 4% or $172,393 at 6%; with 100% employer match about $193,942 at 4% or $129,295 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | 0 | $1,236,468,964 | $9,963,321 | - |
| Ameren Health and Welfare Trust | - | - | $860,196,130 | - | - |
| Group Major Medical Expense Benefit Plan | - | 9,150 | $22,227,209 | $136,320,206 | $14,898iApproximate average salary by contribution assumption: employee only about $372,460 at 4% or $248,306 at 6%; with 50% employer match about $248,306 at 4% or $165,538 at 6%; with 100% employer match about $186,230 at 4% or $124,153 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,386 | - | - | - |
| 2019 | 6 | 9,504 | $9,565,808,716 | $338,225,359 | $35,588iApproximate average salary by contribution assumption: employee only about $889,692 at 4% or $593,128 at 6%; with 50% employer match about $593,128 at 4% or $395,419 at 6%; with 100% employer match about $444,846 at 4% or $296,564 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,381 | $4,935,427,217 | $49,000,000 | $5,223iApproximate average salary by contribution assumption: employee only about $130,583 at 4% or $87,055 at 6%; with 50% employer match about $87,055 at 4% or $58,037 at 6%; with 100% employer match about $65,292 at 4% or $43,528 at 6%. |
| Ameren Savings Investment Plan | - | 9,328 | $2,709,348,496 | $140,388,584 | $15,050iApproximate average salary by contribution assumption: employee only about $376,256 at 4% or $250,837 at 6%; with 50% employer match about $250,837 at 4% or $167,225 at 6%; with 100% employer match about $188,128 at 4% or $125,419 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $1,123,103,925 | $10,054,923 | - |
| Ameren Health and Welfare Trust | - | - | $782,864,534 | - | - |
| Group Major Medical Expense Benefit Plan | - | 9,200 | $15,064,544 | $138,781,852 | $15,085iApproximate average salary by contribution assumption: employee only about $377,125 at 4% or $251,416 at 6%; with 50% employer match about $251,416 at 4% or $167,611 at 6%; with 100% employer match about $188,562 at 4% or $125,708 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,504 | - | - | - |
| 2018 | 6 | 8,986 | $8,049,228,832 | $350,668,770 | $39,024iApproximate average salary by contribution assumption: employee only about $975,598 at 4% or $650,398 at 6%; with 50% employer match about $650,398 at 4% or $433,599 at 6%; with 100% employer match about $487,799 at 4% or $325,199 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,976 | $4,070,888,708 | $79,200,000 | $8,824iApproximate average salary by contribution assumption: employee only about $220,588 at 4% or $147,059 at 6%; with 50% employer match about $147,059 at 4% or $98,039 at 6%; with 100% employer match about $110,294 at 4% or $73,529 at 6%. |
| Ameren Savings Investment Plan | - | 8,851 | $2,297,256,888 | $129,652,003 | $14,648iApproximate average salary by contribution assumption: employee only about $366,207 at 4% or $244,138 at 6%; with 50% employer match about $244,138 at 4% or $162,759 at 6%; with 100% employer match about $183,104 at 4% or $122,069 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $971,531,435 | $10,493,295 | - |
| Ameren Health and Welfare Trust | - | - | $694,656,079 | - | - |
| Group Major Medical Expense Benefit Plan | - | 8,815 | $14,895,722 | $131,323,472 | $14,898iApproximate average salary by contribution assumption: employee only about $372,443 at 4% or $248,295 at 6%; with 50% employer match about $248,295 at 4% or $165,530 at 6%; with 100% employer match about $186,222 at 4% or $124,148 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,986 | - | - | - |
| 2017 | 6 | 8,779 | $8,802,074,334 | $258,694,383 | $29,467iApproximate average salary by contribution assumption: employee only about $736,685 at 4% or $491,123 at 6%; with 50% employer match about $491,123 at 4% or $327,416 at 6%; with 100% employer match about $368,343 at 4% or $245,562 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,741 | $4,454,788,107 | - | - |
| Ameren Savings Investment Plan | - | 8,653 | $2,451,347,759 | $115,749,103 | $13,377iApproximate average salary by contribution assumption: employee only about $334,419 at 4% or $222,946 at 6%; with 50% employer match about $222,946 at 4% or $148,631 at 6%; with 100% employer match about $167,209 at 4% or $111,473 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $1,071,853,191 | $10,149,115 | - |
| Ameren Health and Welfare Trust | - | - | $808,172,775 | - | - |
| Group Major Medical Expense Benefit Plan | - | 8,631 | $15,912,502 | $132,796,165 | $15,386iApproximate average salary by contribution assumption: employee only about $384,649 at 4% or $256,433 at 6%; with 50% employer match about $256,433 at 4% or $170,955 at 6%; with 100% employer match about $192,324 at 4% or $128,216 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,779 | - | - | - |
| 2016 | 8 | 8,819 | $7,869,640,452 | $313,510,324 | $35,549iApproximate average salary by contribution assumption: employee only about $888,735 at 4% or $592,490 at 6%; with 50% employer match about $592,490 at 4% or $394,994 at 6%; with 100% employer match about $444,368 at 4% or $296,245 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,731 | $4,023,984,475 | $61,400,000 | $7,032iApproximate average salary by contribution assumption: employee only about $175,810 at 4% or $117,207 at 6%; with 50% employer match about $117,207 at 4% or $78,138 at 6%; with 100% employer match about $87,905 at 4% or $58,603 at 6%. |
| Ameren Savings Investment Plan | - | 8,625 | $2,137,205,503 | $112,568,715 | $13,051iApproximate average salary by contribution assumption: employee only about $326,286 at 4% or $217,524 at 6%; with 50% employer match about $217,524 at 4% or $145,016 at 6%; with 100% employer match about $163,143 at 4% or $108,762 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $970,943,621 | $9,385,135 | - |
| Ameren Health and Welfare Trust | - | - | $724,316,839 | - | - |
| Group Major Medical Expense Benefit Plan | - | 8,655 | $13,190,014 | $124,833,199 | $14,423iApproximate average salary by contribution assumption: employee only about $360,581 at 4% or $240,387 at 6%; with 50% employer match about $240,387 at 4% or $160,258 at 6%; with 100% employer match about $180,291 at 4% or $120,194 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 0 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,819 | - | - | - |
| Group Life Insurance Plan | - | 0 | - | $5,323,275 | - |
| 2015 | 8 | 8,767 | $7,489,657,851 | $575,482,860 | $65,642iApproximate average salary by contribution assumption: employee only about $1,641,048 at 4% or $1,094,032 at 6%; with 50% employer match about $1,094,032 at 4% or $729,355 at 6%; with 100% employer match about $820,524 at 4% or $547,016 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,703 | $3,849,685,803 | $161,500,000 | $18,557iApproximate average salary by contribution assumption: employee only about $463,920 at 4% or $309,280 at 6%; with 50% employer match about $309,280 at 4% or $206,187 at 6%; with 100% employer match about $231,960 at 4% or $154,640 at 6%. |
| Ameren Savings Investment Plan | - | 8,553 | $1,974,262,076 | $110,879,480 | $12,964iApproximate average salary by contribution assumption: employee only about $324,095 at 4% or $216,064 at 6%; with 50% employer match about $216,064 at 4% or $144,042 at 6%; with 100% employer match about $162,048 at 4% or $108,032 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $825,626,603 | $25,138,058 | - |
| Ameren Health and Welfare Trust | - | - | $701,711,217 | $147,146,732 | - |
| Group Life Insurance Plan | - | 8,618 | $125,500,063 | $5,229,713 | $607iApproximate average salary by contribution assumption: employee only about $15,171 at 4% or $10,114 at 6%; with 50% employer match about $10,114 at 4% or $6,743 at 6%; with 100% employer match about $7,585 at 4% or $5,057 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 8,655 | $12,872,089 | $125,588,877 | $14,511iApproximate average salary by contribution assumption: employee only about $362,764 at 4% or $241,843 at 6%; with 50% employer match about $241,843 at 4% or $161,228 at 6%; with 100% employer match about $181,382 at 4% or $120,921 at 6%. |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,767 | - | - | - |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 689 | - | - | - |
| 2014 | 8 | 8,766 | $7,708,923,728 | $385,413,024 | $43,967iApproximate average salary by contribution assumption: employee only about $1,099,170 at 4% or $732,780 at 6%; with 50% employer match about $732,780 at 4% or $488,520 at 6%; with 100% employer match about $549,585 at 4% or $366,390 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,699 | $3,919,317,972 | - | - |
| Ameren Savings Investment Plan | - | 8,198 | $2,026,033,732 | $103,431,670 | $12,617iApproximate average salary by contribution assumption: employee only about $315,417 at 4% or $210,278 at 6%; with 50% employer match about $210,278 at 4% or $140,186 at 6%; with 100% employer match about $157,709 at 4% or $105,139 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $856,724,150 | $23,161,683 | - |
| Ameren Health and Welfare Trust | - | - | $764,566,890 | $134,465,392 | - |
| Group Life Insurance Plan | - | 8,610 | $130,803,590 | $5,094,029 | $592iApproximate average salary by contribution assumption: employee only about $14,791 at 4% or $9,861 at 6%; with 50% employer match about $9,861 at 4% or $6,574 at 6%; with 100% employer match about $7,396 at 4% or $4,930 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 8,642 | $11,477,394 | $119,260,250 | $13,800iApproximate average salary by contribution assumption: employee only about $345,002 at 4% or $230,001 at 6%; with 50% employer match about $230,001 at 4% or $153,334 at 6%; with 100% employer match about $172,501 at 4% or $115,001 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 723 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,766 | - | - | - |
| 2013 | 8 | 9,645 | $7,317,980,706 | $528,764,986 | $54,823iApproximate average salary by contribution assumption: employee only about $1,370,568 at 4% or $913,712 at 6%; with 50% employer match about $913,712 at 4% or $609,141 at 6%; with 100% employer match about $685,284 at 4% or $456,856 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,702 | $3,669,661,203 | $109,000,000 | $12,526iApproximate average salary by contribution assumption: employee only about $313,146 at 4% or $208,764 at 6%; with 50% employer match about $208,764 at 4% or $139,176 at 6%; with 100% employer match about $156,573 at 4% or $104,382 at 6%. |
| Ameren Savings Investment Plan | - | 8,538 | $1,928,882,443 | $106,465,786 | $12,470iApproximate average salary by contribution assumption: employee only about $311,741 at 4% or $207,827 at 6%; with 50% employer match about $207,827 at 4% or $138,552 at 6%; with 100% employer match about $155,870 at 4% or $103,914 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | 9,645 | $838,803,190 | $30,951,978 | $3,209iApproximate average salary by contribution assumption: employee only about $80,228 at 4% or $53,485 at 6%; with 50% employer match about $53,485 at 4% or $35,657 at 6%; with 100% employer match about $40,114 at 4% or $26,743 at 6%. |
| Ameren Health and Welfare Trust | - | - | $740,153,909 | $149,073,048 | - |
| Group Life Insurance Plan | - | 8,607 | $127,941,411 | $13,827,680 | $1,607iApproximate average salary by contribution assumption: employee only about $40,164 at 4% or $26,776 at 6%; with 50% employer match about $26,776 at 4% or $17,851 at 6%; with 100% employer match about $20,082 at 4% or $13,388 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 8,645 | $12,538,550 | $119,446,494 | $13,817iApproximate average salary by contribution assumption: employee only about $345,421 at 4% or $230,280 at 6%; with 50% employer match about $230,280 at 4% or $153,520 at 6%; with 100% employer match about $172,710 at 4% or $115,140 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 760 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 8,796 | - | - | - |
| 2012 | 8 | 9,180 | $6,519,108,649 | $688,644,009 | $75,016iApproximate average salary by contribution assumption: employee only about $1,875,392 at 4% or $1,250,261 at 6%; with 50% employer match about $1,250,261 at 4% or $833,508 at 6%; with 100% employer match about $937,696 at 4% or $625,131 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,987 | $3,375,040,414 | $266,303,023 | $29,632iApproximate average salary by contribution assumption: employee only about $740,801 at 4% or $493,867 at 6%; with 50% employer match about $493,867 at 4% or $329,245 at 6%; with 100% employer match about $370,400 at 4% or $246,934 at 6%. |
| Ameren Savings Investment Plan | - | 8,975 | $1,632,818,217 | $101,042,578 | $11,258iApproximate average salary by contribution assumption: employee only about $281,456 at 4% or $187,637 at 6%; with 50% employer match about $187,637 at 4% or $125,091 at 6%; with 100% employer match about $140,728 at 4% or $93,819 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $733,303,503 | $54,732,771 | - |
| Ameren Health and Welfare Trust | - | - | $660,204,544 | $141,859,674 | - |
| Group Life Insurance Plan | - | 9,005 | $105,027,755 | $12,195,484 | $1,354iApproximate average salary by contribution assumption: employee only about $33,858 at 4% or $22,572 at 6%; with 50% employer match about $22,572 at 4% or $15,048 at 6%; with 100% employer match about $16,929 at 4% or $11,286 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 9,038 | $12,714,216 | $112,510,479 | $12,449iApproximate average salary by contribution assumption: employee only about $311,215 at 4% or $207,477 at 6%; with 50% employer match about $207,477 at 4% or $138,318 at 6%; with 100% employer match about $155,608 at 4% or $103,738 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 841 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,180 | - | - | - |
| 2011 | 8 | 9,314 | $5,790,198,699 | $621,375,518 | $66,714iApproximate average salary by contribution assumption: employee only about $1,667,854 at 4% or $1,111,902 at 6%; with 50% employer match about $1,111,902 at 4% or $741,268 at 6%; with 100% employer match about $833,927 at 4% or $555,951 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 8,884 | $2,908,433,645 | $44,129,921 | $4,967iApproximate average salary by contribution assumption: employee only about $124,184 at 4% or $82,789 at 6%; with 50% employer match about $82,789 at 4% or $55,193 at 6%; with 100% employer match about $62,092 at 4% or $41,395 at 6%. |
| Ameren Savings Investment Plan | - | 8,936 | $1,522,805,320 | $101,179,820 | $11,323iApproximate average salary by contribution assumption: employee only about $283,068 at 4% or $188,712 at 6%; with 50% employer match about $188,712 at 4% or $125,808 at 6%; with 100% employer match about $141,534 at 4% or $94,356 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $655,958,142 | $132,614,649 | - |
| Ameren Health and Welfare Trust | - | - | $598,045,914 | $204,498,481 | - |
| Group Life Insurance Plan | - | 8,812 | $89,768,260 | $19,196,994 | $2,179iApproximate average salary by contribution assumption: employee only about $54,463 at 4% or $36,308 at 6%; with 50% employer match about $36,308 at 4% or $24,206 at 6%; with 100% employer match about $27,231 at 4% or $18,154 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 8,890 | $15,187,418 | $119,755,653 | $13,471iApproximate average salary by contribution assumption: employee only about $336,771 at 4% or $224,514 at 6%; with 50% employer match about $224,514 at 4% or $149,676 at 6%; with 100% employer match about $168,385 at 4% or $112,257 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 940 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,314 | - | - | - |
| 2010 | 8 | 9,452 | $5,453,049,962 | $485,972,539 | $51,415iApproximate average salary by contribution assumption: employee only about $1,285,370 at 4% or $856,913 at 6%; with 50% employer match about $856,913 at 4% or $571,275 at 6%; with 100% employer match about $642,685 at 4% or $428,457 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,391 | $2,820,380,036 | $50,150,499 | $5,340iApproximate average salary by contribution assumption: employee only about $133,507 at 4% or $89,005 at 6%; with 50% employer match about $89,005 at 4% or $59,336 at 6%; with 100% employer match about $66,753 at 4% or $44,502 at 6%. |
| Ameren Savings Investment Plan | - | 9,432 | $1,458,148,607 | $98,018,152 | $10,392iApproximate average salary by contribution assumption: employee only about $259,802 at 4% or $173,201 at 6%; with 50% employer match about $173,201 at 4% or $115,468 at 6%; with 100% employer match about $129,901 at 4% or $86,601 at 6%. |
| Ameren Retiree Welfare Benefit Plan | - | - | $571,442,014 | $37,039,680 | - |
| Ameren Health and Welfare Trust | - | - | $512,052,426 | $155,278,435 | - |
| Group Life Insurance Plan | - | 9,310 | $81,272,400 | $14,949,540 | $1,606iApproximate average salary by contribution assumption: employee only about $40,144 at 4% or $26,763 at 6%; with 50% employer match about $26,763 at 4% or $17,842 at 6%; with 100% employer match about $20,072 at 4% or $13,381 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 9,359 | $9,754,479 | $130,536,233 | $13,948iApproximate average salary by contribution assumption: employee only about $348,692 at 4% or $232,461 at 6%; with 50% employer match about $232,461 at 4% or $154,974 at 6%; with 100% employer match about $174,346 at 4% or $116,231 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 948 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,452 | - | - | - |
| 2009 | 7 | 9,864 | $4,988,336,954 | $554,898,664 | $56,255iApproximate average salary by contribution assumption: employee only about $1,406,373 at 4% or $937,582 at 6%; with 50% employer match about $937,582 at 4% or $625,055 at 6%; with 100% employer match about $703,187 at 4% or $468,791 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,623 | $2,653,646,551 | $124,684,653 | $12,957iApproximate average salary by contribution assumption: employee only about $323,924 at 4% or $215,949 at 6%; with 50% employer match about $215,949 at 4% or $143,966 at 6%; with 100% employer match about $161,962 at 4% or $107,975 at 6%. |
| Ameren Savings Investment Plan | - | 9,864 | $1,271,870,261 | $94,422,576 | $9,572iApproximate average salary by contribution assumption: employee only about $239,311 at 4% or $159,541 at 6%; with 50% employer match about $159,541 at 4% or $106,360 at 6%; with 100% employer match about $119,656 at 4% or $79,770 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 9,641 | $539,011,500 | $168,890,471 | $17,518iApproximate average salary by contribution assumption: employee only about $437,949 at 4% or $291,966 at 6%; with 50% employer match about $291,966 at 4% or $194,644 at 6%; with 100% employer match about $218,974 at 4% or $145,983 at 6%. |
| Ameren Health and Welfare Trust | - | - | $456,128,114 | $152,736,407 | - |
| Group Life Insurance Plan | - | 9,608 | $67,680,528 | $14,164,557 | $1,474iApproximate average salary by contribution assumption: employee only about $36,856 at 4% or $24,571 at 6%; with 50% employer match about $24,571 at 4% or $16,381 at 6%; with 100% employer match about $18,428 at 4% or $12,285 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 976 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,751 | - | - | - |
| 2008 | 8 | 9,838 | $4,456,833,838 | $483,258,429 | $49,122iApproximate average salary by contribution assumption: employee only about $1,228,040 at 4% or $818,694 at 6%; with 50% employer match about $818,694 at 4% or $545,796 at 6%; with 100% employer match about $614,020 at 4% or $409,347 at 6%. |
| Central Illinois Public Service Co Retirement Income Plan | - | 9,583 | $2,575,421,891 | $80,672,842 | $8,418iApproximate average salary by contribution assumption: employee only about $210,458 at 4% or $140,305 at 6%; with 50% employer match about $140,305 at 4% or $93,537 at 6%; with 100% employer match about $105,229 at 4% or $70,153 at 6%. |
| Ameren Savings Investment Plan | - | 9,838 | $1,054,217,367 | $90,096,233 | $9,158iApproximate average salary by contribution assumption: employee only about $228,950 at 4% or $152,633 at 6%; with 50% employer match about $152,633 at 4% or $101,755 at 6%; with 100% employer match about $114,475 at 4% or $76,317 at 6%. |
| Group Major Medical Expense Benefit Plan | - | 9,509 | $429,364,070 | $160,704,245 | $16,900iApproximate average salary by contribution assumption: employee only about $422,506 at 4% or $281,670 at 6%; with 50% employer match about $281,670 at 4% or $187,780 at 6%; with 100% employer match about $211,253 at 4% or $140,835 at 6%. |
| Ameren Health and Welfare Trust | - | 0 | $349,912,102 | $141,756,907 | - |
| Group Life Insurance Plan | - | 9,658 | $47,918,408 | $9,750,104 | $1,010iApproximate average salary by contribution assumption: employee only about $25,238 at 4% or $16,826 at 6%; with 50% employer match about $16,826 at 4% or $11,217 at 6%; with 100% employer match about $12,619 at 4% or $8,413 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 902 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,723 | - | - | - |
| Central ILL Publ Serv Co Employee Long-Term Savings Plan - Ibew No. 702 | - | 0 | - | $278,098 | - |
| 2007 | 8 | 9,296 | $5,387,177,202 | $461,279,540 | $49,621iApproximate average salary by contribution assumption: employee only about $1,240,532 at 4% or $827,022 at 6%; with 50% employer match about $827,022 at 4% or $551,348 at 6%; with 100% employer match about $620,266 at 4% or $413,511 at 6%. |
| Dental & Optical Expense Reimbursement Plan for Local Union 1439 | - | 892 | - | - | - |
| Group Accidental Death & Dismemberment Insurance Plan | - | 9,296 | - | - | - |
| 2006 | 9 | 9,188 | $5,323,688,110 | $423,305,494 | $46,072iApproximate average salary by contribution assumption: employee only about $1,151,789 at 4% or $767,859 at 6%; with 50% employer match about $767,859 at 4% or $511,906 at 6%; with 100% employer match about $575,895 at 4% or $383,930 at 6%. |
| 2005 | 10 | 10,104 | $4,986,529,987 | $347,886,131 | $34,431iApproximate average salary by contribution assumption: employee only about $860,763 at 4% or $573,842 at 6%; with 50% employer match about $573,842 at 4% or $382,562 at 6%; with 100% employer match about $430,382 at 4% or $286,921 at 6%. |
| 2004 | 10 | 9,639 | $4,662,834,009 | $528,351,871 | $54,814iApproximate average salary by contribution assumption: employee only about $1,370,349 at 4% or $913,566 at 6%; with 50% employer match about $913,566 at 4% or $609,044 at 6%; with 100% employer match about $685,175 at 4% or $456,783 at 6%. |
| 2003 | 20 | 7,783 | $3,312,692,625 | $483,258,943 | $62,092iApproximate average salary by contribution assumption: employee only about $1,552,290 at 4% or $1,034,860 at 6%; with 50% employer match about $1,034,860 at 4% or $689,907 at 6%; with 100% employer match about $776,145 at 4% or $517,430 at 6%. |
| 2002 | 9 | 7,717 | $2,359,288,202 | $299,216,082 | $38,774iApproximate average salary by contribution assumption: employee only about $969,341 at 4% or $646,227 at 6%; with 50% employer match about $646,227 at 4% or $430,818 at 6%; with 100% employer match about $484,670 at 4% or $323,114 at 6%. |
| 2001 | 8 | 7,742 | $2,285,210,255 | $178,069,604 | $23,000iApproximate average salary by contribution assumption: employee only about $575,012 at 4% or $383,341 at 6%; with 50% employer match about $383,341 at 4% or $255,561 at 6%; with 100% employer match about $287,506 at 4% or $191,671 at 6%. |
| 2000 | 11 | 7,342 | $863,628,838 | $101,597,837 | $13,838iApproximate average salary by contribution assumption: employee only about $345,947 at 4% or $230,632 at 6%; with 50% employer match about $230,632 at 4% or $153,754 at 6%; with 100% employer match about $172,974 at 4% or $115,316 at 6%. |
| 1999 | 11 | 7,682 | $2,500,749,910 | $149,053,276 | $19,403iApproximate average salary by contribution assumption: employee only about $485,073 at 4% or $323,382 at 6%; with 50% employer match about $323,382 at 4% or $215,588 at 6%; with 100% employer match about $242,537 at 4% or $161,691 at 6%. |