Civic Intelligence

Duffek Construction LLC

Plan context: Duffek Construction 401(K) Plan

EIN 81-5253542 • Waukesha, WI • 7 filings • 1 plans

W229 N1870 Westwood DriveWaukesha, WI 53186
Current Snapshot

Latest Year

2025

2025 Participants

21

2025 Assets

$1,708,367

2025 Contributions

$321,877

Historical Graphs

Total Assets Over Time

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

$1,708,367$854,184$0201920222025YearValue
$1,708,367Latest year 2025

Participants Over Time

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

21110201920222025YearValue
21Latest 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
2025121$1,708,367$321,877$15,327iApproximate average salary by contribution assumption: employee only about $383,187 at 4% or $255,458 at 6%; with 50% employer match about $255,458 at 4% or $170,305 at 6%; with 100% employer match about $191,593 at 4% or $127,729 at 6%.
Duffek Construction 401(K) Plan-21$1,708,367$321,877$15,327iApproximate average salary by contribution assumption: employee only about $383,187 at 4% or $255,458 at 6%; with 50% employer match about $255,458 at 4% or $170,305 at 6%; with 100% employer match about $191,593 at 4% or $127,729 at 6%.
2024120$1,289,547$433,821$21,691iApproximate average salary by contribution assumption: employee only about $542,276 at 4% or $361,518 at 6%; with 50% employer match about $361,518 at 4% or $241,012 at 6%; with 100% employer match about $271,138 at 4% or $180,759 at 6%.
Duffek Construction 401(K) Plan-20$1,289,547$433,821$21,691iApproximate average salary by contribution assumption: employee only about $542,276 at 4% or $361,518 at 6%; with 50% employer match about $361,518 at 4% or $241,012 at 6%; with 100% employer match about $271,138 at 4% or $180,759 at 6%.
2023119$771,433$274,130$14,428iApproximate average salary by contribution assumption: employee only about $360,697 at 4% or $240,465 at 6%; with 50% employer match about $240,465 at 4% or $160,310 at 6%; with 100% employer match about $180,349 at 4% or $120,232 at 6%.
Duffek Construction 401(K) Plan-19$771,433$274,130$14,428iApproximate average salary by contribution assumption: employee only about $360,697 at 4% or $240,465 at 6%; with 50% employer match about $240,465 at 4% or $160,310 at 6%; with 100% employer match about $180,349 at 4% or $120,232 at 6%.
2022116$505,988$236,400$14,775iApproximate average salary by contribution assumption: employee only about $369,375 at 4% or $246,250 at 6%; with 50% employer match about $246,250 at 4% or $164,167 at 6%; with 100% employer match about $184,688 at 4% or $123,125 at 6%.
Duffek Construction 401(K) Plan-16$505,988$236,400$14,775iApproximate average salary by contribution assumption: employee only about $369,375 at 4% or $246,250 at 6%; with 50% employer match about $246,250 at 4% or $164,167 at 6%; with 100% employer match about $184,688 at 4% or $123,125 at 6%.
2021110$359,254$121,210$12,121iApproximate average salary by contribution assumption: employee only about $303,025 at 4% or $202,017 at 6%; with 50% employer match about $202,017 at 4% or $134,678 at 6%; with 100% employer match about $151,513 at 4% or $101,008 at 6%.
Duffek Construction 401(K) Plan-10$359,254$121,210$12,121iApproximate average salary by contribution assumption: employee only about $303,025 at 4% or $202,017 at 6%; with 50% employer match about $202,017 at 4% or $134,678 at 6%; with 100% employer match about $151,513 at 4% or $101,008 at 6%.
202018$204,667$107,338$13,417iApproximate average salary by contribution assumption: employee only about $335,431 at 4% or $223,621 at 6%; with 50% employer match about $223,621 at 4% or $149,081 at 6%; with 100% employer match about $167,716 at 4% or $111,810 at 6%.
Duffek Construction 401(K) Plan-8$204,667$107,338$13,417iApproximate average salary by contribution assumption: employee only about $335,431 at 4% or $223,621 at 6%; with 50% employer match about $223,621 at 4% or $149,081 at 6%; with 100% employer match about $167,716 at 4% or $111,810 at 6%.
201916$78,605$75,656$12,609iApproximate average salary by contribution assumption: employee only about $315,233 at 4% or $210,156 at 6%; with 50% employer match about $210,156 at 4% or $140,104 at 6%; with 100% employer match about $157,617 at 4% or $105,078 at 6%.
Duffek Construction 401(K) Plan-6$78,605$75,656$12,609iApproximate average salary by contribution assumption: employee only about $315,233 at 4% or $210,156 at 6%; with 50% employer match about $210,156 at 4% or $140,104 at 6%; with 100% employer match about $157,617 at 4% or $105,078 at 6%.