Civic Intelligence

Underdown Trenching, Inc.

Plan context: Underdown Trenching 401K Plan

EIN 43-1584612 • Fenton, MO • 26 filings • 2 plans

1150 Quail Hollow DriveFenton, MO 63026-4956
Current Snapshot

Latest Year

2024

2024 Participants

36

2024 Assets

$8,215,170

2024 Contributions

$676,201

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$8,215,170$4,107,585$0200720162024YearValue
$8,215,170Latest year 2024

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

50250200720162024YearValue
36Latest year 2024

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 / FilingFilingsParticipantsAssetsContributionsContrib./Participant
2024236$8,215,170$676,201$18,783iApproximate average salary by contribution assumption: employee only about $469,584 at 4% or $313,056 at 6%; with 50% employer match about $313,056 at 4% or $208,704 at 6%; with 100% employer match about $234,792 at 4% or $156,528 at 6%.
Underdown Trenching 401K Plan-36$4,777,340$459,201$12,756iApproximate average salary by contribution assumption: employee only about $318,890 at 4% or $212,593 at 6%; with 50% employer match about $212,593 at 4% or $141,729 at 6%; with 100% employer match about $159,445 at 4% or $106,297 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-34$3,437,830$217,000$6,382iApproximate average salary by contribution assumption: employee only about $159,559 at 4% or $106,373 at 6%; with 50% employer match about $106,373 at 4% or $70,915 at 6%; with 100% employer match about $79,779 at 4% or $53,186 at 6%.
2023237$7,324,371$933,203$25,222iApproximate average salary by contribution assumption: employee only about $630,543 at 4% or $420,362 at 6%; with 50% employer match about $420,362 at 4% or $280,241 at 6%; with 100% employer match about $315,271 at 4% or $210,181 at 6%.
Underdown Trenching 401K Plan-37$4,231,392$433,203$11,708iApproximate average salary by contribution assumption: employee only about $292,705 at 4% or $195,136 at 6%; with 50% employer match about $195,136 at 4% or $130,091 at 6%; with 100% employer match about $146,352 at 4% or $97,568 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-33$3,092,979$500,000$15,152iApproximate average salary by contribution assumption: employee only about $378,788 at 4% or $252,525 at 6%; with 50% employer match about $252,525 at 4% or $168,350 at 6%; with 100% employer match about $189,394 at 4% or $126,263 at 6%.
2022240$5,829,512$1,275,232$31,881iApproximate average salary by contribution assumption: employee only about $797,020 at 4% or $531,347 at 6%; with 50% employer match about $531,347 at 4% or $354,231 at 6%; with 100% employer match about $398,510 at 4% or $265,673 at 6%.
Underdown Trenching 401K Plan-40$3,431,953$405,232$10,131iApproximate average salary by contribution assumption: employee only about $253,270 at 4% or $168,847 at 6%; with 50% employer match about $168,847 at 4% or $112,564 at 6%; with 100% employer match about $126,635 at 4% or $84,423 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-35$2,397,559$870,000$24,857iApproximate average salary by contribution assumption: employee only about $621,429 at 4% or $414,286 at 6%; with 50% employer match about $414,286 at 4% or $276,190 at 6%; with 100% employer match about $310,714 at 4% or $207,143 at 6%.
2021239$5,573,377$603,346$15,470iApproximate average salary by contribution assumption: employee only about $386,760 at 4% or $257,840 at 6%; with 50% employer match about $257,840 at 4% or $171,893 at 6%; with 100% employer match about $193,380 at 4% or $128,920 at 6%.
Underdown Trenching 401K Plan-39$3,756,067$390,346$10,009iApproximate average salary by contribution assumption: employee only about $250,222 at 4% or $166,815 at 6%; with 50% employer match about $166,815 at 4% or $111,210 at 6%; with 100% employer match about $125,111 at 4% or $83,407 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-36$1,817,310$213,000$5,917iApproximate average salary by contribution assumption: employee only about $147,917 at 4% or $98,611 at 6%; with 50% employer match about $98,611 at 4% or $65,741 at 6%; with 100% employer match about $73,958 at 4% or $49,306 at 6%.
2020246$4,983,123$737,071$16,023iApproximate average salary by contribution assumption: employee only about $400,582 at 4% or $267,055 at 6%; with 50% employer match about $267,055 at 4% or $178,036 at 6%; with 100% employer match about $200,291 at 4% or $133,527 at 6%.
Underdown Trenching 401K Plan-46$3,434,212$385,071$8,371iApproximate average salary by contribution assumption: employee only about $209,278 at 4% or $139,518 at 6%; with 50% employer match about $139,518 at 4% or $93,012 at 6%; with 100% employer match about $104,639 at 4% or $69,759 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-41$1,548,911$352,000$8,585iApproximate average salary by contribution assumption: employee only about $214,634 at 4% or $143,089 at 6%; with 50% employer match about $143,089 at 4% or $95,393 at 6%; with 100% employer match about $107,317 at 4% or $71,545 at 6%.
2019248$3,993,357$821,100$17,106iApproximate average salary by contribution assumption: employee only about $427,656 at 4% or $285,104 at 6%; with 50% employer match about $285,104 at 4% or $190,069 at 6%; with 100% employer match about $213,828 at 4% or $142,552 at 6%.
Underdown Trenching 401K Plan-48$2,887,177$371,100$7,731iApproximate average salary by contribution assumption: employee only about $193,281 at 4% or $128,854 at 6%; with 50% employer match about $128,854 at 4% or $85,903 at 6%; with 100% employer match about $96,641 at 4% or $64,427 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-39$1,106,180$450,000$11,538iApproximate average salary by contribution assumption: employee only about $288,462 at 4% or $192,308 at 6%; with 50% employer match about $192,308 at 4% or $128,205 at 6%; with 100% employer match about $144,231 at 4% or $96,154 at 6%.
2018249$2,726,304$792,797$16,180iApproximate average salary by contribution assumption: employee only about $404,488 at 4% or $269,659 at 6%; with 50% employer match about $269,659 at 4% or $179,773 at 6%; with 100% employer match about $202,244 at 4% or $134,829 at 6%.
Underdown Trenching 401K Plan-49$2,096,508$436,797$8,914iApproximate average salary by contribution assumption: employee only about $222,856 at 4% or $148,570 at 6%; with 50% employer match about $148,570 at 4% or $99,047 at 6%; with 100% employer match about $111,428 at 4% or $74,285 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-37$629,796$356,000$9,622iApproximate average salary by contribution assumption: employee only about $240,541 at 4% or $160,360 at 6%; with 50% employer match about $160,360 at 4% or $106,907 at 6%; with 100% employer match about $120,270 at 4% or $80,180 at 6%.
2017250$2,079,226$591,459$11,829iApproximate average salary by contribution assumption: employee only about $295,730 at 4% or $197,153 at 6%; with 50% employer match about $197,153 at 4% or $131,435 at 6%; with 100% employer match about $147,865 at 4% or $98,577 at 6%.
Underdown Trenching 401K Plan-50$1,805,430$317,663$6,353iApproximate average salary by contribution assumption: employee only about $158,832 at 4% or $105,888 at 6%; with 50% employer match about $105,888 at 4% or $70,592 at 6%; with 100% employer match about $79,416 at 4% or $52,944 at 6%.
UNDERDOWN TRENCHING, INC. CASH BALANCE PLAN-39$273,796$273,796$7,020iApproximate average salary by contribution assumption: employee only about $175,510 at 4% or $117,007 at 6%; with 50% employer match about $117,007 at 4% or $78,005 at 6%; with 100% employer match about $87,755 at 4% or $58,503 at 6%.
2016141$1,255,324$228,126$5,564iApproximate average salary by contribution assumption: employee only about $139,101 at 4% or $92,734 at 6%; with 50% employer match about $92,734 at 4% or $61,823 at 6%; with 100% employer match about $69,551 at 4% or $46,367 at 6%.
Underdown Trenching 401K Plan-41$1,255,324$228,126$5,564iApproximate average salary by contribution assumption: employee only about $139,101 at 4% or $92,734 at 6%; with 50% employer match about $92,734 at 4% or $61,823 at 6%; with 100% employer match about $69,551 at 4% or $46,367 at 6%.
2015139$967,706$246,543$6,322iApproximate average salary by contribution assumption: employee only about $158,040 at 4% or $105,360 at 6%; with 50% employer match about $105,360 at 4% or $70,240 at 6%; with 100% employer match about $79,020 at 4% or $52,680 at 6%.
Underdown Trenching 401K Plan-39$967,706$246,543$6,322iApproximate average salary by contribution assumption: employee only about $158,040 at 4% or $105,360 at 6%; with 50% employer match about $105,360 at 4% or $70,240 at 6%; with 100% employer match about $79,020 at 4% or $52,680 at 6%.
2014143$844,141$194,893$4,532iApproximate average salary by contribution assumption: employee only about $113,310 at 4% or $75,540 at 6%; with 50% employer match about $75,540 at 4% or $50,360 at 6%; with 100% employer match about $56,655 at 4% or $37,770 at 6%.
Underdown Trenching 401K Plan-43$844,141$194,893$4,532iApproximate average salary by contribution assumption: employee only about $113,310 at 4% or $75,540 at 6%; with 50% employer match about $75,540 at 4% or $50,360 at 6%; with 100% employer match about $56,655 at 4% or $37,770 at 6%.
2013139$614,635$195,521$5,013iApproximate average salary by contribution assumption: employee only about $125,334 at 4% or $83,556 at 6%; with 50% employer match about $83,556 at 4% or $55,704 at 6%; with 100% employer match about $62,667 at 4% or $41,778 at 6%.
Underdown Trenching 401K Plan-39$614,635$195,521$5,013iApproximate average salary by contribution assumption: employee only about $125,334 at 4% or $83,556 at 6%; with 50% employer match about $83,556 at 4% or $55,704 at 6%; with 100% employer match about $62,667 at 4% or $41,778 at 6%.
2012126$346,048$64,861$2,495iApproximate average salary by contribution assumption: employee only about $62,366 at 4% or $41,578 at 6%; with 50% employer match about $41,578 at 4% or $27,718 at 6%; with 100% employer match about $31,183 at 4% or $20,789 at 6%.
Underdown Trenching 401K Plan-26$346,048$64,861$2,495iApproximate average salary by contribution assumption: employee only about $62,366 at 4% or $41,578 at 6%; with 50% employer match about $41,578 at 4% or $27,718 at 6%; with 100% employer match about $31,183 at 4% or $20,789 at 6%.
2011116$272,489$34,639$2,165iApproximate average salary by contribution assumption: employee only about $54,123 at 4% or $36,082 at 6%; with 50% employer match about $36,082 at 4% or $24,055 at 6%; with 100% employer match about $27,062 at 4% or $18,041 at 6%.
Underdown Trenching 401K Plan-16$272,489$34,639$2,165iApproximate average salary by contribution assumption: employee only about $54,123 at 4% or $36,082 at 6%; with 50% employer match about $36,082 at 4% or $24,055 at 6%; with 100% employer match about $27,062 at 4% or $18,041 at 6%.
2010118$306,187$36,490$2,027iApproximate average salary by contribution assumption: employee only about $50,681 at 4% or $33,787 at 6%; with 50% employer match about $33,787 at 4% or $22,525 at 6%; with 100% employer match about $25,340 at 4% or $16,894 at 6%.
Underdown Trenching 401K Plan-18$306,187$36,490$2,027iApproximate average salary by contribution assumption: employee only about $50,681 at 4% or $33,787 at 6%; with 50% employer match about $33,787 at 4% or $22,525 at 6%; with 100% employer match about $25,340 at 4% or $16,894 at 6%.
2009118$265,721$70,512$3,917iApproximate average salary by contribution assumption: employee only about $97,933 at 4% or $65,289 at 6%; with 50% employer match about $65,289 at 4% or $43,526 at 6%; with 100% employer match about $48,967 at 4% or $32,644 at 6%.
Underdown Trenching 401K Plan-18$265,721$70,512$3,917iApproximate average salary by contribution assumption: employee only about $97,933 at 4% or $65,289 at 6%; with 50% employer match about $65,289 at 4% or $43,526 at 6%; with 100% employer match about $48,967 at 4% or $32,644 at 6%.
2008118$148,951$83,804$4,656iApproximate average salary by contribution assumption: employee only about $116,394 at 4% or $77,596 at 6%; with 50% employer match about $77,596 at 4% or $51,731 at 6%; with 100% employer match about $58,197 at 4% or $38,798 at 6%.
Underdown Trenching 401K Plan-18$148,951$83,804$4,656iApproximate average salary by contribution assumption: employee only about $116,394 at 4% or $77,596 at 6%; with 50% employer match about $77,596 at 4% or $51,731 at 6%; with 100% employer match about $58,197 at 4% or $38,798 at 6%.
2007121$113,980$114,242$5,440iApproximate average salary by contribution assumption: employee only about $136,002 at 4% or $90,668 at 6%; with 50% employer match about $90,668 at 4% or $60,446 at 6%; with 100% employer match about $68,001 at 4% or $45,334 at 6%.
Underdown Trenching 401K Plan-21$113,980$114,242$5,440iApproximate average salary by contribution assumption: employee only about $136,002 at 4% or $90,668 at 6%; with 50% employer match about $90,668 at 4% or $60,446 at 6%; with 100% employer match about $68,001 at 4% or $45,334 at 6%.
Underdown Trenching, Inc. | EIN 43-1584612 | 2024 Form 5500 Company Profile