Civic Intelligence

EN Engineering, LLC

Plan context: En Engineering Retirement Savings Plan

EIN 36-4485185 • Warrenville, IL • 62 filings • 15 plans

28100 Torch PkwyWarrenville, IL 60555
Current Snapshot

Latest Year

2025

2025 Participants

2,704

2025 Assets

$209,070,173

2025 Contributions

$30,003,824

Historical Graphs

Total Assets Over Time

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

$209,070,173$104,535,087$0200220142024YearValue
$209,070,173Latest year 2024

Participants Over Time

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

2,7041,3520200220142025YearValue
2,704Latest 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
202512,704$0$0-
En Engineering LLC Welfare Benefit Plan-2,704---
202422,699$209,070,173$30,003,824$11,117iApproximate average salary by contribution assumption: employee only about $277,916 at 4% or $185,277 at 6%; with 50% employer match about $185,277 at 4% or $123,518 at 6%; with 100% employer match about $138,958 at 4% or $92,639 at 6%.
En Engineering Retirement Savings Plan-2,699$209,070,173$30,003,824$11,117iApproximate average salary by contribution assumption: employee only about $277,916 at 4% or $185,277 at 6%; with 50% employer match about $185,277 at 4% or $123,518 at 6%; with 100% employer match about $138,958 at 4% or $92,639 at 6%.
En Engineering LLC Welfare Benefit Plan-2,546---
202322,675$176,467,937$25,896,156$9,681iApproximate average salary by contribution assumption: employee only about $242,020 at 4% or $161,347 at 6%; with 50% employer match about $161,347 at 4% or $107,565 at 6%; with 100% employer match about $121,010 at 4% or $80,673 at 6%.
En Engineering Retirement Savings Plan-2,675$176,467,937$25,896,156$9,681iApproximate average salary by contribution assumption: employee only about $242,020 at 4% or $161,347 at 6%; with 50% employer match about $161,347 at 4% or $107,565 at 6%; with 100% employer match about $121,010 at 4% or $80,673 at 6%.
En Engineering LLC Welfare Benefit Plan-2,493---
202222,494$119,232,724$18,419,750$7,386iApproximate average salary by contribution assumption: employee only about $184,641 at 4% or $123,094 at 6%; with 50% employer match about $123,094 at 4% or $82,063 at 6%; with 100% employer match about $92,320 at 4% or $61,547 at 6%.
En Engineering Retirement Savings Plan-2,494$119,232,724$18,419,750$7,386iApproximate average salary by contribution assumption: employee only about $184,641 at 4% or $123,094 at 6%; with 50% employer match about $123,094 at 4% or $82,063 at 6%; with 100% employer match about $92,320 at 4% or $61,547 at 6%.
En Engineering LLC Welfare Benefit Plan-2,060---
202121,760$135,889,620$14,408,042$8,186iApproximate average salary by contribution assumption: employee only about $204,660 at 4% or $136,440 at 6%; with 50% employer match about $136,440 at 4% or $90,960 at 6%; with 100% employer match about $102,330 at 4% or $68,220 at 6%.
En Engineering Retirement Savings Plan-1,760$135,889,620$14,408,042$8,186iApproximate average salary by contribution assumption: employee only about $204,660 at 4% or $136,440 at 6%; with 50% employer match about $136,440 at 4% or $90,960 at 6%; with 100% employer match about $102,330 at 4% or $68,220 at 6%.
En Engineering LLC Welfare Benefit Plan-1,692---
202021,495$109,843,301$12,798,210$8,561iApproximate average salary by contribution assumption: employee only about $214,017 at 4% or $142,678 at 6%; with 50% employer match about $142,678 at 4% or $95,119 at 6%; with 100% employer match about $107,008 at 4% or $71,339 at 6%.
En Engineering Retirement Savings Plan-1,397$109,843,301$12,798,210$9,161iApproximate average salary by contribution assumption: employee only about $229,030 at 4% or $152,687 at 6%; with 50% employer match about $152,687 at 4% or $101,791 at 6%; with 100% employer match about $114,515 at 4% or $76,343 at 6%.
En Engineering LLC Welfare Benefit Plan-1,495---
201921,234$89,471,221$11,374,997$9,218iApproximate average salary by contribution assumption: employee only about $230,450 at 4% or $153,633 at 6%; with 50% employer match about $153,633 at 4% or $102,422 at 6%; with 100% employer match about $115,225 at 4% or $76,817 at 6%.
En Engineering Retirement Savings Plan-1,234$89,471,221$11,374,997$9,218iApproximate average salary by contribution assumption: employee only about $230,450 at 4% or $153,633 at 6%; with 50% employer match about $153,633 at 4% or $102,422 at 6%; with 100% employer match about $115,225 at 4% or $76,817 at 6%.
En Engineering LLC Welfare Benefit Plan-1,085---
201821,018$71,293,223$10,891,241$10,699iApproximate average salary by contribution assumption: employee only about $267,467 at 4% or $178,311 at 6%; with 50% employer match about $178,311 at 4% or $118,874 at 6%; with 100% employer match about $133,733 at 4% or $89,156 at 6%.
En Engineering Retirement Savings Plan-1,018$71,293,223$10,891,241$10,699iApproximate average salary by contribution assumption: employee only about $267,467 at 4% or $178,311 at 6%; with 50% employer match about $178,311 at 4% or $118,874 at 6%; with 100% employer match about $133,733 at 4% or $89,156 at 6%.
En Engineering LLC Welfare Benefit Plan-951---
201721,024$60,302,422$8,698,535$8,495iApproximate average salary by contribution assumption: employee only about $212,367 at 4% or $141,578 at 6%; with 50% employer match about $141,578 at 4% or $94,385 at 6%; with 100% employer match about $106,183 at 4% or $70,789 at 6%.
En Engineering Retirement Savings Plan-1,024$60,302,422$8,698,535$8,495iApproximate average salary by contribution assumption: employee only about $212,367 at 4% or $141,578 at 6%; with 50% employer match about $141,578 at 4% or $94,385 at 6%; with 100% employer match about $106,183 at 4% or $70,789 at 6%.
En Engineering LLC Welfare Benefit Plan-883---
20164865$43,137,980$6,839,365$7,907iApproximate average salary by contribution assumption: employee only about $197,670 at 4% or $131,780 at 6%; with 50% employer match about $131,780 at 4% or $87,853 at 6%; with 100% employer match about $98,835 at 4% or $65,890 at 6%.
En Engineering Retirement Savings Plan-865$43,137,980$6,839,365$7,907iApproximate average salary by contribution assumption: employee only about $197,670 at 4% or $131,780 at 6%; with 50% employer match about $131,780 at 4% or $87,853 at 6%; with 100% employer match about $98,835 at 4% or $65,890 at 6%.
Vision - Eyemed-----
Other Welfare Plan - Unum/Met Life/Ameritas-----
Health Plan - Bcbs-----
20154730$35,213,032$8,087,586$11,079iApproximate average salary by contribution assumption: employee only about $276,972 at 4% or $184,648 at 6%; with 50% employer match about $184,648 at 4% or $123,099 at 6%; with 100% employer match about $138,486 at 4% or $92,324 at 6%.
En Engineering Retirement Savings Plan-730$35,213,032$8,087,586$11,079iApproximate average salary by contribution assumption: employee only about $276,972 at 4% or $184,648 at 6%; with 50% employer match about $184,648 at 4% or $123,099 at 6%; with 100% employer match about $138,486 at 4% or $92,324 at 6%.
Health Plan - Bcbs-443---
Other Welfare Plan - Unum/Met Life/Ameritas-700---
Vision - Eyemed-420---
20144655$29,124,057$4,436,494$6,773iApproximate average salary by contribution assumption: employee only about $169,332 at 4% or $112,888 at 6%; with 50% employer match about $112,888 at 4% or $75,259 at 6%; with 100% employer match about $84,666 at 4% or $56,444 at 6%.
En Engineering Retirement Savings Plan-655$29,124,057$4,436,494$6,773iApproximate average salary by contribution assumption: employee only about $169,332 at 4% or $112,888 at 6%; with 50% employer match about $112,888 at 4% or $75,259 at 6%; with 100% employer match about $84,666 at 4% or $56,444 at 6%.
Other Welfare Plan - Unum/Met Life/Ameritas-617---
Health Plan - Bcbs-413---
Vision - Eyemed-374---
20134724$21,370,649$4,419,367$6,104iApproximate average salary by contribution assumption: employee only about $152,602 at 4% or $101,735 at 6%; with 50% employer match about $101,735 at 4% or $67,823 at 6%; with 100% employer match about $76,301 at 4% or $50,867 at 6%.
En Engineering Retirement Savings Plan-480$21,370,649$4,419,367$9,207iApproximate average salary by contribution assumption: employee only about $230,175 at 4% or $153,450 at 6%; with 50% employer match about $153,450 at 4% or $102,300 at 6%; with 100% employer match about $115,088 at 4% or $76,725 at 6%.
Health Plan - Bcbs-302---
Other Welfare Plan - Unum/Met Life/Ameritas-724---
Vision - Eyemed-261---
20125410$14,591,868$2,726,082$6,649iApproximate average salary by contribution assumption: employee only about $166,225 at 4% or $110,816 at 6%; with 50% employer match about $110,816 at 4% or $73,878 at 6%; with 100% employer match about $83,112 at 4% or $55,408 at 6%.
En Engineering Retirement Savings Plan-410$14,591,868$2,726,082$6,649iApproximate average salary by contribution assumption: employee only about $166,225 at 4% or $110,816 at 6%; with 50% employer match about $110,816 at 4% or $73,878 at 6%; with 100% employer match about $83,112 at 4% or $55,408 at 6%.
Other Welfare Plan - Unum/Met Life/Ameritas-405---
Health Plan - Bcbs-274---
Other Welfare Plan - Unum/Met Life/Ameritas-405---
Vision - Eyemed-231---
20114290$10,609,634$1,959,651$6,757iApproximate average salary by contribution assumption: employee only about $168,935 at 4% or $112,624 at 6%; with 50% employer match about $112,624 at 4% or $75,082 at 6%; with 100% employer match about $84,468 at 4% or $56,312 at 6%.
En Engineering Retirement Savings Plan-290$10,609,634$1,959,651$6,757iApproximate average salary by contribution assumption: employee only about $168,935 at 4% or $112,624 at 6%; with 50% employer match about $112,624 at 4% or $75,082 at 6%; with 100% employer match about $84,468 at 4% or $56,312 at 6%.
Health Plan - Bcbs-195---
Other Welfare Plan - Unum/Met Life/Ameritas-286---
Vision - Eyemed-155---
20103221$9,169,958$1,591,302$7,200iApproximate average salary by contribution assumption: employee only about $180,012 at 4% or $120,008 at 6%; with 50% employer match about $120,008 at 4% or $80,005 at 6%; with 100% employer match about $90,006 at 4% or $60,004 at 6%.
En Engineering Retirement Savings Plan-221$9,169,958$1,591,302$7,200iApproximate average salary by contribution assumption: employee only about $180,012 at 4% or $120,008 at 6%; with 50% employer match about $120,008 at 4% or $80,005 at 6%; with 100% employer match about $90,006 at 4% or $60,004 at 6%.
Health Plan - Bcbs-159---
Other Welfare Plan - Unum/Met Life/Ameritas-176---
20093144$7,170,069$1,140,178$7,918iApproximate average salary by contribution assumption: employee only about $197,948 at 4% or $131,965 at 6%; with 50% employer match about $131,965 at 4% or $87,977 at 6%; with 100% employer match about $98,974 at 4% or $65,983 at 6%.
En Engineering Retirement Savings Plan-127$7,170,069$1,140,178$8,978iApproximate average salary by contribution assumption: employee only about $224,444 at 4% or $149,630 at 6%; with 50% employer match about $149,630 at 4% or $99,753 at 6%; with 100% employer match about $112,222 at 4% or $74,815 at 6%.
Other Welfare Plan - Unum/Met Life/Ameritas-144---
Health Plan - Bcbs-113---
20082155$5,079,059$1,256,562$8,107iApproximate average salary by contribution assumption: employee only about $202,671 at 4% or $135,114 at 6%; with 50% employer match about $135,114 at 4% or $90,076 at 6%; with 100% employer match about $101,336 at 4% or $67,557 at 6%.
En Engineering Retirement Savings Plan-155$5,079,059$1,256,562$8,107iApproximate average salary by contribution assumption: employee only about $202,671 at 4% or $135,114 at 6%; with 50% employer match about $135,114 at 4% or $90,076 at 6%; with 100% employer match about $101,336 at 4% or $67,557 at 6%.
Other Welfare Plan - Unum/Met Life/Ameritas-151---
20071109$0$0-
En Engineering Retirement Savings Plan-109---
2006189$4,849,984$855,434$9,612iApproximate average salary by contribution assumption: employee only about $240,290 at 4% or $160,194 at 6%; with 50% employer match about $160,194 at 4% or $106,796 at 6%; with 100% employer match about $120,145 at 4% or $80,097 at 6%.
En Engineering Retirement Savings Plan-89$4,849,984$855,434$9,612iApproximate average salary by contribution assumption: employee only about $240,290 at 4% or $160,194 at 6%; with 50% employer match about $160,194 at 4% or $106,796 at 6%; with 100% employer match about $120,145 at 4% or $80,097 at 6%.
2005176$3,604,531$704,659$9,272iApproximate average salary by contribution assumption: employee only about $231,796 at 4% or $154,530 at 6%; with 50% employer match about $154,530 at 4% or $103,020 at 6%; with 100% employer match about $115,898 at 4% or $77,265 at 6%.
En Engineering Retirement Savings Plan-76$3,604,531$704,659$9,272iApproximate average salary by contribution assumption: employee only about $231,796 at 4% or $154,530 at 6%; with 50% employer match about $154,530 at 4% or $103,020 at 6%; with 100% employer match about $115,898 at 4% or $77,265 at 6%.
2004167$2,845,692$645,896$9,640iApproximate average salary by contribution assumption: employee only about $241,006 at 4% or $160,671 at 6%; with 50% employer match about $160,671 at 4% or $107,114 at 6%; with 100% employer match about $120,503 at 4% or $80,335 at 6%.
En Engineering Retirement Savings Plan-67$2,845,692$645,896$9,640iApproximate average salary by contribution assumption: employee only about $241,006 at 4% or $160,671 at 6%; with 50% employer match about $160,671 at 4% or $107,114 at 6%; with 100% employer match about $120,503 at 4% or $80,335 at 6%.
2003473$2,126,304$581,559$7,967iApproximate average salary by contribution assumption: employee only about $199,164 at 4% or $132,776 at 6%; with 50% employer match about $132,776 at 4% or $88,517 at 6%; with 100% employer match about $99,582 at 4% or $66,388 at 6%.
En Engineering Retirement Savings Plan-71$2,126,304$581,559$8,191iApproximate average salary by contribution assumption: employee only about $204,774 at 4% or $136,516 at 6%; with 50% employer match about $136,516 at 4% or $91,011 at 6%; with 100% employer match about $102,387 at 4% or $68,258 at 6%.
Vision - Eyemed-73---
Health Plan - Bcbs-73---
Other Welfare Plan - Unum/Met Life/Ameritas-73---
2002470$1,277,144$1,365,605$19,509iApproximate average salary by contribution assumption: employee only about $487,716 at 4% or $325,144 at 6%; with 50% employer match about $325,144 at 4% or $216,763 at 6%; with 100% employer match about $243,858 at 4% or $162,572 at 6%.
En Engineering Retirement Savings Plan-68$1,277,144$1,365,605$20,082iApproximate average salary by contribution assumption: employee only about $502,061 at 4% or $334,707 at 6%; with 50% employer match about $334,707 at 4% or $223,138 at 6%; with 100% employer match about $251,030 at 4% or $167,354 at 6%.
Other Welfare Plan - Unum/Met Life/Ameritas-70---
Health Plan - Bcbs-70---
Vision - Eyemed-53---