Civic Intelligence

Interpower Corporation

Plan context: Interpower Corporation 401(K) Plan

EIN 94-2321737 • Oskaloosa, IA • 26 filings • 4 plans

100 Interpower AveOskaloosa, IA 52577
Current Snapshot

Latest Year

2025

2025 Participants

85

2025 Assets

$9,549,540

2025 Contributions

$445,911

Historical Graphs

Total Assets Over Time

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

$9,964,899$4,982,450$0199920132025YearValue
$9,549,540Latest year 2025

Participants Over Time

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

125630199920132025YearValue
85Latest 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
2025185$9,549,540$445,911$5,246iApproximate average salary by contribution assumption: employee only about $131,150 at 4% or $87,434 at 6%; with 50% employer match about $87,434 at 4% or $58,289 at 6%; with 100% employer match about $65,575 at 4% or $43,717 at 6%.
Interpower Corporation 401(K) Plan-85$9,549,540$445,911$5,246iApproximate average salary by contribution assumption: employee only about $131,150 at 4% or $87,434 at 6%; with 50% employer match about $87,434 at 4% or $58,289 at 6%; with 100% employer match about $65,575 at 4% or $43,717 at 6%.
2024187$9,964,899$429,739$4,940iApproximate average salary by contribution assumption: employee only about $123,488 at 4% or $82,325 at 6%; with 50% employer match about $82,325 at 4% or $54,884 at 6%; with 100% employer match about $61,744 at 4% or $41,163 at 6%.
Interpower Corporation 401(K) Plan-87$9,964,899$429,739$4,940iApproximate average salary by contribution assumption: employee only about $123,488 at 4% or $82,325 at 6%; with 50% employer match about $82,325 at 4% or $54,884 at 6%; with 100% employer match about $61,744 at 4% or $41,163 at 6%.
2023188$8,985,411$431,285$4,901iApproximate average salary by contribution assumption: employee only about $122,524 at 4% or $81,683 at 6%; with 50% employer match about $81,683 at 4% or $54,455 at 6%; with 100% employer match about $61,262 at 4% or $40,841 at 6%.
Interpower Corporation 401(K) Plan-88$8,985,411$431,285$4,901iApproximate average salary by contribution assumption: employee only about $122,524 at 4% or $81,683 at 6%; with 50% employer match about $81,683 at 4% or $54,455 at 6%; with 100% employer match about $61,262 at 4% or $40,841 at 6%.
2022189$7,659,209$566,977$6,371iApproximate average salary by contribution assumption: employee only about $159,263 at 4% or $106,175 at 6%; with 50% employer match about $106,175 at 4% or $70,784 at 6%; with 100% employer match about $79,632 at 4% or $53,088 at 6%.
Interpower Corporation 401(K) Plan-89$7,659,209$566,977$6,371iApproximate average salary by contribution assumption: employee only about $159,263 at 4% or $106,175 at 6%; with 50% employer match about $106,175 at 4% or $70,784 at 6%; with 100% employer match about $79,632 at 4% or $53,088 at 6%.
2021199$8,699,949$435,455$4,399iApproximate average salary by contribution assumption: employee only about $109,963 at 4% or $73,309 at 6%; with 50% employer match about $73,309 at 4% or $48,873 at 6%; with 100% employer match about $54,982 at 4% or $36,654 at 6%.
Interpower Corporation 401(K) Plan-99$8,699,949$435,455$4,399iApproximate average salary by contribution assumption: employee only about $109,963 at 4% or $73,309 at 6%; with 50% employer match about $73,309 at 4% or $48,873 at 6%; with 100% employer match about $54,982 at 4% or $36,654 at 6%.
20201107$7,591,379$424,098$3,964iApproximate average salary by contribution assumption: employee only about $99,088 at 4% or $66,059 at 6%; with 50% employer match about $66,059 at 4% or $44,039 at 6%; with 100% employer match about $49,544 at 4% or $33,029 at 6%.
Interpower Corporation 401(K) Plan-107$7,591,379$424,098$3,964iApproximate average salary by contribution assumption: employee only about $99,088 at 4% or $66,059 at 6%; with 50% employer match about $66,059 at 4% or $44,039 at 6%; with 100% employer match about $49,544 at 4% or $33,029 at 6%.
20191111$6,344,332$427,184$3,849iApproximate average salary by contribution assumption: employee only about $96,213 at 4% or $64,142 at 6%; with 50% employer match about $64,142 at 4% or $42,761 at 6%; with 100% employer match about $48,106 at 4% or $32,071 at 6%.
Interpower Corporation 401(K) Plan-111$6,344,332$427,184$3,849iApproximate average salary by contribution assumption: employee only about $96,213 at 4% or $64,142 at 6%; with 50% employer match about $64,142 at 4% or $42,761 at 6%; with 100% employer match about $48,106 at 4% or $32,071 at 6%.
20181114$5,339,340$481,777$4,226iApproximate average salary by contribution assumption: employee only about $105,653 at 4% or $70,435 at 6%; with 50% employer match about $70,435 at 4% or $46,957 at 6%; with 100% employer match about $52,826 at 4% or $35,218 at 6%.
Interpower Corporation 401(K) Plan-114$5,339,340$481,777$4,226iApproximate average salary by contribution assumption: employee only about $105,653 at 4% or $70,435 at 6%; with 50% employer match about $70,435 at 4% or $46,957 at 6%; with 100% employer match about $52,826 at 4% or $35,218 at 6%.
20171125$5,576,824$321,575$2,573iApproximate average salary by contribution assumption: employee only about $64,315 at 4% or $42,877 at 6%; with 50% employer match about $42,877 at 4% or $28,584 at 6%; with 100% employer match about $32,158 at 4% or $21,438 at 6%.
Interpower Corporation 401(K) Plan-125$5,576,824$321,575$2,573iApproximate average salary by contribution assumption: employee only about $64,315 at 4% or $42,877 at 6%; with 50% employer match about $42,877 at 4% or $28,584 at 6%; with 100% employer match about $32,158 at 4% or $21,438 at 6%.
2016163$4,219,706$212,481$3,373iApproximate average salary by contribution assumption: employee only about $84,318 at 4% or $56,212 at 6%; with 50% employer match about $56,212 at 4% or $37,475 at 6%; with 100% employer match about $42,159 at 4% or $28,106 at 6%.
Interpower Corporation 401(K) Plan-63$4,219,706$212,481$3,373iApproximate average salary by contribution assumption: employee only about $84,318 at 4% or $56,212 at 6%; with 50% employer match about $56,212 at 4% or $37,475 at 6%; with 100% employer match about $42,159 at 4% or $28,106 at 6%.
2015170$4,031,616$212,181$3,031iApproximate average salary by contribution assumption: employee only about $75,779 at 4% or $50,519 at 6%; with 50% employer match about $50,519 at 4% or $33,680 at 6%; with 100% employer match about $37,889 at 4% or $25,260 at 6%.
Interpower Corporation 401(K) Plan-70$4,031,616$212,181$3,031iApproximate average salary by contribution assumption: employee only about $75,779 at 4% or $50,519 at 6%; with 50% employer match about $50,519 at 4% or $33,680 at 6%; with 100% employer match about $37,889 at 4% or $25,260 at 6%.
2014169$4,266,899$193,861$2,810iApproximate average salary by contribution assumption: employee only about $70,239 at 4% or $46,826 at 6%; with 50% employer match about $46,826 at 4% or $31,218 at 6%; with 100% employer match about $35,120 at 4% or $23,413 at 6%.
Interpower Corporation 401(K) Plan-69$4,266,899$193,861$2,810iApproximate average salary by contribution assumption: employee only about $70,239 at 4% or $46,826 at 6%; with 50% employer match about $46,826 at 4% or $31,218 at 6%; with 100% employer match about $35,120 at 4% or $23,413 at 6%.
2013165$3,827,585$196,807$3,028iApproximate average salary by contribution assumption: employee only about $75,695 at 4% or $50,463 at 6%; with 50% employer match about $50,463 at 4% or $33,642 at 6%; with 100% employer match about $37,848 at 4% or $25,232 at 6%.
Interpower Corporation 401(K) Plan-65$3,827,585$196,807$3,028iApproximate average salary by contribution assumption: employee only about $75,695 at 4% or $50,463 at 6%; with 50% employer match about $50,463 at 4% or $33,642 at 6%; with 100% employer match about $37,848 at 4% or $25,232 at 6%.
2012175$3,083,920$200,419$2,672iApproximate average salary by contribution assumption: employee only about $66,806 at 4% or $44,538 at 6%; with 50% employer match about $44,538 at 4% or $29,692 at 6%; with 100% employer match about $33,403 at 4% or $22,269 at 6%.
Interpower Corporation 401(K) Plan-75$3,083,920$200,419$2,672iApproximate average salary by contribution assumption: employee only about $66,806 at 4% or $44,538 at 6%; with 50% employer match about $44,538 at 4% or $29,692 at 6%; with 100% employer match about $33,403 at 4% or $22,269 at 6%.
2011176$2,588,193$201,048$2,645iApproximate average salary by contribution assumption: employee only about $66,134 at 4% or $44,089 at 6%; with 50% employer match about $44,089 at 4% or $29,393 at 6%; with 100% employer match about $33,067 at 4% or $22,045 at 6%.
Interpower Corporation 401(K) Plan-76$2,588,193$201,048$2,645iApproximate average salary by contribution assumption: employee only about $66,134 at 4% or $44,089 at 6%; with 50% employer match about $44,089 at 4% or $29,393 at 6%; with 100% employer match about $33,067 at 4% or $22,045 at 6%.
2010175$2,451,002$235,336$3,138iApproximate average salary by contribution assumption: employee only about $78,445 at 4% or $52,297 at 6%; with 50% employer match about $52,297 at 4% or $34,865 at 6%; with 100% employer match about $39,223 at 4% or $26,148 at 6%.
Interpower Corporation 401(K) Plan-75$2,451,002$235,336$3,138iApproximate average salary by contribution assumption: employee only about $78,445 at 4% or $52,297 at 6%; with 50% employer match about $52,297 at 4% or $34,865 at 6%; with 100% employer match about $39,223 at 4% or $26,148 at 6%.
2009183$2,104,709$206,945$2,493iApproximate average salary by contribution assumption: employee only about $62,333 at 4% or $41,555 at 6%; with 50% employer match about $41,555 at 4% or $27,703 at 6%; with 100% employer match about $31,166 at 4% or $20,778 at 6%.
Interpower Corporation 401(K) Plan-83$2,104,709$206,945$2,493iApproximate average salary by contribution assumption: employee only about $62,333 at 4% or $41,555 at 6%; with 50% employer match about $41,555 at 4% or $27,703 at 6%; with 100% employer match about $31,166 at 4% or $20,778 at 6%.
20081112$1,514,292$342,550$3,058iApproximate average salary by contribution assumption: employee only about $76,462 at 4% or $50,975 at 6%; with 50% employer match about $50,975 at 4% or $33,983 at 6%; with 100% employer match about $38,231 at 4% or $25,487 at 6%.
Interpower Corporation 401(K) Plan-112$1,514,292$342,550$3,058iApproximate average salary by contribution assumption: employee only about $76,462 at 4% or $50,975 at 6%; with 50% employer match about $50,975 at 4% or $33,983 at 6%; with 100% employer match about $38,231 at 4% or $25,487 at 6%.
20071109$2,057,926$228,941$2,100iApproximate average salary by contribution assumption: employee only about $52,509 at 4% or $35,006 at 6%; with 50% employer match about $35,006 at 4% or $23,338 at 6%; with 100% employer match about $26,255 at 4% or $17,503 at 6%.
Interpower Corporation 401(K) Plan-109$2,057,926$228,941$2,100iApproximate average salary by contribution assumption: employee only about $52,509 at 4% or $35,006 at 6%; with 50% employer match about $35,006 at 4% or $23,338 at 6%; with 100% employer match about $26,255 at 4% or $17,503 at 6%.
2006134$1,933,269$225,394$6,629iApproximate average salary by contribution assumption: employee only about $165,731 at 4% or $110,487 at 6%; with 50% employer match about $110,487 at 4% or $73,658 at 6%; with 100% employer match about $82,865 at 4% or $55,244 at 6%.
Interpower Corporation 401(K) Plan-34$1,933,269$225,394$6,629iApproximate average salary by contribution assumption: employee only about $165,731 at 4% or $110,487 at 6%; with 50% employer match about $110,487 at 4% or $73,658 at 6%; with 100% employer match about $82,865 at 4% or $55,244 at 6%.
2005196$1,608,912$198,778$2,071iApproximate average salary by contribution assumption: employee only about $51,765 at 4% or $34,510 at 6%; with 50% employer match about $34,510 at 4% or $23,007 at 6%; with 100% employer match about $25,883 at 4% or $17,255 at 6%.
Interpower Corporation 401(K) Plan-96$1,608,912$198,778$2,071iApproximate average salary by contribution assumption: employee only about $51,765 at 4% or $34,510 at 6%; with 50% employer match about $34,510 at 4% or $23,007 at 6%; with 100% employer match about $25,883 at 4% or $17,255 at 6%.
2004185$1,410,019$216,338$2,545iApproximate average salary by contribution assumption: employee only about $63,629 at 4% or $42,419 at 6%; with 50% employer match about $42,419 at 4% or $28,279 at 6%; with 100% employer match about $31,814 at 4% or $21,210 at 6%.
Interpower Corporation 401(K) Plan-85$1,410,019$216,338$2,545iApproximate average salary by contribution assumption: employee only about $63,629 at 4% or $42,419 at 6%; with 50% employer match about $42,419 at 4% or $28,279 at 6%; with 100% employer match about $31,814 at 4% or $21,210 at 6%.
2003178$1,128,908$191,105$2,450iApproximate average salary by contribution assumption: employee only about $61,252 at 4% or $40,834 at 6%; with 50% employer match about $40,834 at 4% or $27,223 at 6%; with 100% employer match about $30,626 at 4% or $20,417 at 6%.
Interpower Corporation 401(K) Plan-78$1,128,908$191,105$2,450iApproximate average salary by contribution assumption: employee only about $61,252 at 4% or $40,834 at 6%; with 50% employer match about $40,834 at 4% or $27,223 at 6%; with 100% employer match about $30,626 at 4% or $20,417 at 6%.
2002186$751,058$193,179$2,246iApproximate average salary by contribution assumption: employee only about $56,157 at 4% or $37,438 at 6%; with 50% employer match about $37,438 at 4% or $24,959 at 6%; with 100% employer match about $28,078 at 4% or $18,719 at 6%.
Interpower Corporation 401(K) Plan-86$751,058$193,179$2,246iApproximate average salary by contribution assumption: employee only about $56,157 at 4% or $37,438 at 6%; with 50% employer match about $37,438 at 4% or $24,959 at 6%; with 100% employer match about $28,078 at 4% or $18,719 at 6%.
2001194$0$0-
Interpower Corporation 401(K) Plan-94---
1999169$591,865$134,541$1,950iApproximate average salary by contribution assumption: employee only about $48,747 at 4% or $32,498 at 6%; with 50% employer match about $32,498 at 4% or $21,665 at 6%; with 100% employer match about $24,373 at 4% or $16,249 at 6%.
Interpower Corporation 401(K) Plan-69$591,865$134,541$1,950iApproximate average salary by contribution assumption: employee only about $48,747 at 4% or $32,498 at 6%; with 50% employer match about $32,498 at 4% or $21,665 at 6%; with 100% employer match about $24,373 at 4% or $16,249 at 6%.