Civic Intelligence

J.W. Mattek & Sons Inc.

Plan context: J.W. Mattek & Sons Inc. 401(K) Plan

EIN 39-0943259 • Deerbrook, WI • 9 filings • 1 plans

N5798 Star Neva Rd.Deerbrook, WI 54424
Current Snapshot

Latest Year

2025

2025 Participants

10

2025 Assets

$1,082,305

2025 Contributions

$110,456

Historical Graphs

Total Assets Over Time

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

$1,082,305$541,153$0201720212025YearValue
$1,082,305Latest year 2025

Participants Over Time

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

1370201720212025YearValue
10Latest 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
2025110$1,082,305$110,456$11,046iApproximate average salary by contribution assumption: employee only about $276,140 at 4% or $184,093 at 6%; with 50% employer match about $184,093 at 4% or $122,729 at 6%; with 100% employer match about $138,070 at 4% or $92,047 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-10$1,082,305$110,456$11,046iApproximate average salary by contribution assumption: employee only about $276,140 at 4% or $184,093 at 6%; with 50% employer match about $184,093 at 4% or $122,729 at 6%; with 100% employer match about $138,070 at 4% or $92,047 at 6%.
2024111$850,719$108,354$9,850iApproximate average salary by contribution assumption: employee only about $246,259 at 4% or $164,173 at 6%; with 50% employer match about $164,173 at 4% or $109,448 at 6%; with 100% employer match about $123,130 at 4% or $82,086 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-11$850,719$108,354$9,850iApproximate average salary by contribution assumption: employee only about $246,259 at 4% or $164,173 at 6%; with 50% employer match about $164,173 at 4% or $109,448 at 6%; with 100% employer match about $123,130 at 4% or $82,086 at 6%.
2023110$657,278$91,252$9,125iApproximate average salary by contribution assumption: employee only about $228,130 at 4% or $152,087 at 6%; with 50% employer match about $152,087 at 4% or $101,391 at 6%; with 100% employer match about $114,065 at 4% or $76,043 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-10$657,278$91,252$9,125iApproximate average salary by contribution assumption: employee only about $228,130 at 4% or $152,087 at 6%; with 50% employer match about $152,087 at 4% or $101,391 at 6%; with 100% employer match about $114,065 at 4% or $76,043 at 6%.
2022112$485,498$92,883$7,740iApproximate average salary by contribution assumption: employee only about $193,506 at 4% or $129,004 at 6%; with 50% employer match about $129,004 at 4% or $86,003 at 6%; with 100% employer match about $96,753 at 4% or $64,502 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-12$485,498$92,883$7,740iApproximate average salary by contribution assumption: employee only about $193,506 at 4% or $129,004 at 6%; with 50% employer match about $129,004 at 4% or $86,003 at 6%; with 100% employer match about $96,753 at 4% or $64,502 at 6%.
2021112$548,477$97,744$8,145iApproximate average salary by contribution assumption: employee only about $203,633 at 4% or $135,756 at 6%; with 50% employer match about $135,756 at 4% or $90,504 at 6%; with 100% employer match about $101,817 at 4% or $67,878 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-12$548,477$97,744$8,145iApproximate average salary by contribution assumption: employee only about $203,633 at 4% or $135,756 at 6%; with 50% employer match about $135,756 at 4% or $90,504 at 6%; with 100% employer match about $101,817 at 4% or $67,878 at 6%.
2020113$539,925$123,307$9,485iApproximate average salary by contribution assumption: employee only about $237,129 at 4% or $158,086 at 6%; with 50% employer match about $158,086 at 4% or $105,391 at 6%; with 100% employer match about $118,564 at 4% or $79,043 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-13$539,925$123,307$9,485iApproximate average salary by contribution assumption: employee only about $237,129 at 4% or $158,086 at 6%; with 50% employer match about $158,086 at 4% or $105,391 at 6%; with 100% employer match about $118,564 at 4% or $79,043 at 6%.
2019113$336,675$109,502$8,423iApproximate average salary by contribution assumption: employee only about $210,581 at 4% or $140,387 at 6%; with 50% employer match about $140,387 at 4% or $93,591 at 6%; with 100% employer match about $105,290 at 4% or $70,194 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-13$336,675$109,502$8,423iApproximate average salary by contribution assumption: employee only about $210,581 at 4% or $140,387 at 6%; with 50% employer match about $140,387 at 4% or $93,591 at 6%; with 100% employer match about $105,290 at 4% or $70,194 at 6%.
2018112$184,127$101,484$8,457iApproximate average salary by contribution assumption: employee only about $211,425 at 4% or $140,950 at 6%; with 50% employer match about $140,950 at 4% or $93,967 at 6%; with 100% employer match about $105,713 at 4% or $70,475 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-12$184,127$101,484$8,457iApproximate average salary by contribution assumption: employee only about $211,425 at 4% or $140,950 at 6%; with 50% employer match about $140,950 at 4% or $93,967 at 6%; with 100% employer match about $105,713 at 4% or $70,475 at 6%.
2017113$96,442$94,506$7,270iApproximate average salary by contribution assumption: employee only about $181,742 at 4% or $121,162 at 6%; with 50% employer match about $121,162 at 4% or $80,774 at 6%; with 100% employer match about $90,871 at 4% or $60,581 at 6%.
J.W. Mattek & Sons Inc. 401(K) Plan-13$96,442$94,506$7,270iApproximate average salary by contribution assumption: employee only about $181,742 at 4% or $121,162 at 6%; with 50% employer match about $121,162 at 4% or $80,774 at 6%; with 100% employer match about $90,871 at 4% or $60,581 at 6%.