Civic Intelligence

Hey Ecology Inc.

Plan context: Hey Ecology Inc. 401 K Plan & Trust

EIN 36-4183789 • Volo, IL • 34 filings • 7 plans

26575 W. Commerce Drive, Suite 601Volo, IL 60073
Current Snapshot

Latest Year

2025

2025 Participants

52

2025 Assets

$9,127,680

2025 Contributions

$307,643

Historical Graphs

Total Assets Over Time

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

$10,825,507$5,412,754$0199920142025YearValue
$9,127,680Latest year 2025

Participants Over Time

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

52260199920132025YearValue
52Latest year 2025

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
2025152$9,127,680$307,643$5,916iApproximate average salary by contribution assumption: employee only about $147,905 at 4% or $98,604 at 6%; with 50% employer match about $98,604 at 4% or $65,736 at 6%; with 100% employer match about $73,953 at 4% or $49,302 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$9,127,680$307,643$5,916iApproximate average salary by contribution assumption: employee only about $147,905 at 4% or $98,604 at 6%; with 50% employer match about $98,604 at 4% or $65,736 at 6%; with 100% employer match about $73,953 at 4% or $49,302 at 6%.
2024152$8,626,968$299,868$5,767iApproximate average salary by contribution assumption: employee only about $144,167 at 4% or $96,112 at 6%; with 50% employer match about $96,112 at 4% or $64,074 at 6%; with 100% employer match about $72,084 at 4% or $48,056 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$8,626,968$299,868$5,767iApproximate average salary by contribution assumption: employee only about $144,167 at 4% or $96,112 at 6%; with 50% employer match about $96,112 at 4% or $64,074 at 6%; with 100% employer match about $72,084 at 4% or $48,056 at 6%.
2023152$8,218,574$268,717$5,168iApproximate average salary by contribution assumption: employee only about $129,191 at 4% or $86,127 at 6%; with 50% employer match about $86,127 at 4% or $57,418 at 6%; with 100% employer match about $64,595 at 4% or $43,064 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$8,218,574$268,717$5,168iApproximate average salary by contribution assumption: employee only about $129,191 at 4% or $86,127 at 6%; with 50% employer match about $86,127 at 4% or $57,418 at 6%; with 100% employer match about $64,595 at 4% or $43,064 at 6%.
2022152$9,557,565$251,556$4,838iApproximate average salary by contribution assumption: employee only about $120,940 at 4% or $80,627 at 6%; with 50% employer match about $80,627 at 4% or $53,751 at 6%; with 100% employer match about $60,470 at 4% or $40,313 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$9,557,565$251,556$4,838iApproximate average salary by contribution assumption: employee only about $120,940 at 4% or $80,627 at 6%; with 50% employer match about $80,627 at 4% or $53,751 at 6%; with 100% employer match about $60,470 at 4% or $40,313 at 6%.
2021151$10,825,507$250,886$4,919iApproximate average salary by contribution assumption: employee only about $122,983 at 4% or $81,989 at 6%; with 50% employer match about $81,989 at 4% or $54,659 at 6%; with 100% employer match about $61,492 at 4% or $40,994 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-51$10,825,507$250,886$4,919iApproximate average salary by contribution assumption: employee only about $122,983 at 4% or $81,989 at 6%; with 50% employer match about $81,989 at 4% or $54,659 at 6%; with 100% employer match about $61,492 at 4% or $40,994 at 6%.
2020149$9,643,336$219,287$4,475iApproximate average salary by contribution assumption: employee only about $111,881 at 4% or $74,587 at 6%; with 50% employer match about $74,587 at 4% or $49,725 at 6%; with 100% employer match about $55,941 at 4% or $37,294 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-49$9,643,336$219,287$4,475iApproximate average salary by contribution assumption: employee only about $111,881 at 4% or $74,587 at 6%; with 50% employer match about $74,587 at 4% or $49,725 at 6%; with 100% employer match about $55,941 at 4% or $37,294 at 6%.
2019151$8,277,748$202,832$3,977iApproximate average salary by contribution assumption: employee only about $99,427 at 4% or $66,285 at 6%; with 50% employer match about $66,285 at 4% or $44,190 at 6%; with 100% employer match about $49,714 at 4% or $33,142 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-51$8,277,748$202,832$3,977iApproximate average salary by contribution assumption: employee only about $99,427 at 4% or $66,285 at 6%; with 50% employer match about $66,285 at 4% or $44,190 at 6%; with 100% employer match about $49,714 at 4% or $33,142 at 6%.
2018152$6,897,924$245,188$4,715iApproximate average salary by contribution assumption: employee only about $117,879 at 4% or $78,586 at 6%; with 50% employer match about $78,586 at 4% or $52,391 at 6%; with 100% employer match about $58,939 at 4% or $39,293 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$6,897,924$245,188$4,715iApproximate average salary by contribution assumption: employee only about $117,879 at 4% or $78,586 at 6%; with 50% employer match about $78,586 at 4% or $52,391 at 6%; with 100% employer match about $58,939 at 4% or $39,293 at 6%.
2017152$7,261,096$237,713$4,571iApproximate average salary by contribution assumption: employee only about $114,285 at 4% or $76,190 at 6%; with 50% employer match about $76,190 at 4% or $50,793 at 6%; with 100% employer match about $57,143 at 4% or $38,095 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-52$7,261,096$237,713$4,571iApproximate average salary by contribution assumption: employee only about $114,285 at 4% or $76,190 at 6%; with 50% employer match about $76,190 at 4% or $50,793 at 6%; with 100% employer match about $57,143 at 4% or $38,095 at 6%.
2016151$6,105,532$229,000$4,490iApproximate average salary by contribution assumption: employee only about $112,255 at 4% or $74,837 at 6%; with 50% employer match about $74,837 at 4% or $49,891 at 6%; with 100% employer match about $56,127 at 4% or $37,418 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-51$6,105,532$229,000$4,490iApproximate average salary by contribution assumption: employee only about $112,255 at 4% or $74,837 at 6%; with 50% employer match about $74,837 at 4% or $49,891 at 6%; with 100% employer match about $56,127 at 4% or $37,418 at 6%.
2015149$5,490,105$251,425$5,131iApproximate average salary by contribution assumption: employee only about $128,278 at 4% or $85,519 at 6%; with 50% employer match about $85,519 at 4% or $57,012 at 6%; with 100% employer match about $64,139 at 4% or $42,759 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-49$5,490,105$251,425$5,131iApproximate average salary by contribution assumption: employee only about $128,278 at 4% or $85,519 at 6%; with 50% employer match about $85,519 at 4% or $57,012 at 6%; with 100% employer match about $64,139 at 4% or $42,759 at 6%.
2014146$5,276,431$298,894$6,498iApproximate average salary by contribution assumption: employee only about $162,442 at 4% or $108,295 at 6%; with 50% employer match about $108,295 at 4% or $72,197 at 6%; with 100% employer match about $81,221 at 4% or $54,147 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-46$5,276,431$298,894$6,498iApproximate average salary by contribution assumption: employee only about $162,442 at 4% or $108,295 at 6%; with 50% employer match about $108,295 at 4% or $72,197 at 6%; with 100% employer match about $81,221 at 4% or $54,147 at 6%.
2013243$4,617,953$1,233,079$28,676iApproximate average salary by contribution assumption: employee only about $716,906 at 4% or $477,938 at 6%; with 50% employer match about $477,938 at 4% or $318,625 at 6%; with 100% employer match about $358,453 at 4% or $238,969 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-43$4,617,953$1,033,079$24,025iApproximate average salary by contribution assumption: employee only about $600,627 at 4% or $400,418 at 6%; with 50% employer match about $400,418 at 4% or $266,945 at 6%; with 100% employer match about $300,314 at 4% or $200,209 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-0$0$200,000-
2012244$3,910,660$260,982$5,931iApproximate average salary by contribution assumption: employee only about $148,285 at 4% or $98,857 at 6%; with 50% employer match about $98,857 at 4% or $65,905 at 6%; with 100% employer match about $74,143 at 4% or $49,428 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-44$3,030,950$185,982$4,227iApproximate average salary by contribution assumption: employee only about $105,672 at 4% or $70,448 at 6%; with 50% employer match about $70,448 at 4% or $46,965 at 6%; with 100% employer match about $52,836 at 4% or $35,224 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-35$879,710$75,000$2,143iApproximate average salary by contribution assumption: employee only about $53,571 at 4% or $35,714 at 6%; with 50% employer match about $35,714 at 4% or $23,810 at 6%; with 100% employer match about $26,786 at 4% or $17,857 at 6%.
2011245$3,453,599$313,551$6,968iApproximate average salary by contribution assumption: employee only about $174,195 at 4% or $116,130 at 6%; with 50% employer match about $116,130 at 4% or $77,420 at 6%; with 100% employer match about $87,098 at 4% or $58,065 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-45$2,635,317$205,802$4,573iApproximate average salary by contribution assumption: employee only about $114,334 at 4% or $76,223 at 6%; with 50% employer match about $76,223 at 4% or $50,815 at 6%; with 100% employer match about $57,167 at 4% or $38,111 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-38$818,282$107,749$2,836iApproximate average salary by contribution assumption: employee only about $70,888 at 4% or $47,258 at 6%; with 50% employer match about $47,258 at 4% or $31,506 at 6%; with 100% employer match about $35,444 at 4% or $23,629 at 6%.
2010247$3,567,926$415,078$8,831iApproximate average salary by contribution assumption: employee only about $220,786 at 4% or $147,191 at 6%; with 50% employer match about $147,191 at 4% or $98,127 at 6%; with 100% employer match about $110,393 at 4% or $73,595 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-47$2,831,513$231,078$4,917iApproximate average salary by contribution assumption: employee only about $122,914 at 4% or $81,943 at 6%; with 50% employer match about $81,943 at 4% or $54,628 at 6%; with 100% employer match about $61,457 at 4% or $40,971 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-36$736,413$184,000$5,111iApproximate average salary by contribution assumption: employee only about $127,778 at 4% or $85,185 at 6%; with 50% employer match about $85,185 at 4% or $56,790 at 6%; with 100% employer match about $63,889 at 4% or $42,593 at 6%.
2009244$2,861,061$277,632$6,310iApproximate average salary by contribution assumption: employee only about $157,745 at 4% or $105,164 at 6%; with 50% employer match about $105,164 at 4% or $70,109 at 6%; with 100% employer match about $78,873 at 4% or $52,582 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-44$2,308,693$110,632$2,514iApproximate average salary by contribution assumption: employee only about $62,859 at 4% or $41,906 at 6%; with 50% employer match about $41,906 at 4% or $27,937 at 6%; with 100% employer match about $31,430 at 4% or $20,953 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-34$552,368$167,000$4,912iApproximate average salary by contribution assumption: employee only about $122,794 at 4% or $81,863 at 6%; with 50% employer match about $81,863 at 4% or $54,575 at 6%; with 100% employer match about $61,397 at 4% or $40,931 at 6%.
2008232$2,109,079$522,786$16,337iApproximate average salary by contribution assumption: employee only about $408,427 at 4% or $272,284 at 6%; with 50% employer match about $272,284 at 4% or $181,523 at 6%; with 100% employer match about $204,213 at 4% or $136,142 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-32$1,716,331$315,391$9,856iApproximate average salary by contribution assumption: employee only about $246,399 at 4% or $164,266 at 6%; with 50% employer match about $164,266 at 4% or $109,511 at 6%; with 100% employer match about $123,200 at 4% or $82,133 at 6%.
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-29$392,748$207,395$7,152iApproximate average salary by contribution assumption: employee only about $178,789 at 4% or $119,193 at 6%; with 50% employer match about $119,193 at 4% or $79,462 at 6%; with 100% employer match about $89,394 at 4% or $59,596 at 6%.
2007246$0$0-
Hey Ecology Inc. 401 K Plan & Trust-46---
HEY AND ASSOCIATES, INC. DEFINED BENEFIT PLAN-31---
2006147$2,088,944$355,611$7,566iApproximate average salary by contribution assumption: employee only about $189,155 at 4% or $126,103 at 6%; with 50% employer match about $126,103 at 4% or $84,069 at 6%; with 100% employer match about $94,577 at 4% or $63,052 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-47$2,088,944$355,611$7,566iApproximate average salary by contribution assumption: employee only about $189,155 at 4% or $126,103 at 6%; with 50% employer match about $126,103 at 4% or $84,069 at 6%; with 100% employer match about $94,577 at 4% or $63,052 at 6%.
2005143$1,586,036$276,168$6,423iApproximate average salary by contribution assumption: employee only about $160,563 at 4% or $107,042 at 6%; with 50% employer match about $107,042 at 4% or $71,361 at 6%; with 100% employer match about $80,281 at 4% or $53,521 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-43$1,586,036$276,168$6,423iApproximate average salary by contribution assumption: employee only about $160,563 at 4% or $107,042 at 6%; with 50% employer match about $107,042 at 4% or $71,361 at 6%; with 100% employer match about $80,281 at 4% or $53,521 at 6%.
2004126$1,362,787$236,355$9,091iApproximate average salary by contribution assumption: employee only about $227,264 at 4% or $151,510 at 6%; with 50% employer match about $151,510 at 4% or $101,006 at 6%; with 100% employer match about $113,632 at 4% or $75,755 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-26$1,362,787$236,355$9,091iApproximate average salary by contribution assumption: employee only about $227,264 at 4% or $151,510 at 6%; with 50% employer match about $151,510 at 4% or $101,006 at 6%; with 100% employer match about $113,632 at 4% or $75,755 at 6%.
2003126$0$0-
Hey Ecology Inc. 401 K Plan & Trust-26---
2002130$640,442$126,422$4,214iApproximate average salary by contribution assumption: employee only about $105,352 at 4% or $70,234 at 6%; with 50% employer match about $70,234 at 4% or $46,823 at 6%; with 100% employer match about $52,676 at 4% or $35,117 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-30$640,442$126,422$4,214iApproximate average salary by contribution assumption: employee only about $105,352 at 4% or $70,234 at 6%; with 50% employer match about $70,234 at 4% or $46,823 at 6%; with 100% employer match about $52,676 at 4% or $35,117 at 6%.
2000228$613,445$108,453$3,873iApproximate average salary by contribution assumption: employee only about $96,833 at 4% or $64,555 at 6%; with 50% employer match about $64,555 at 4% or $43,037 at 6%; with 100% employer match about $48,417 at 4% or $32,278 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-28$613,445$108,453$3,873iApproximate average salary by contribution assumption: employee only about $96,833 at 4% or $64,555 at 6%; with 50% employer match about $64,555 at 4% or $43,037 at 6%; with 100% employer match about $48,417 at 4% or $32,278 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-23---
1999128$578,975$372,293$13,296iApproximate average salary by contribution assumption: employee only about $332,404 at 4% or $221,603 at 6%; with 50% employer match about $221,603 at 4% or $147,735 at 6%; with 100% employer match about $166,202 at 4% or $110,801 at 6%.
Hey Ecology Inc. 401 K Plan & Trust-28$578,975$372,293$13,296iApproximate average salary by contribution assumption: employee only about $332,404 at 4% or $221,603 at 6%; with 50% employer match about $221,603 at 4% or $147,735 at 6%; with 100% employer match about $166,202 at 4% or $110,801 at 6%.