Civic Intelligence

Sioux City Engineering Company

Plan context: Sioux City Engineering Company 401(K) Plan and Trust

EIN 42-0866355 • Sioux City, IA • 23 filings • 4 plans

5000 South Lewis BoulevardSioux City, IA 51106
Current Snapshot

Latest Year

2025

2025 Participants

44

2025 Assets

$3,902,082

2025 Contributions

$266,410

Historical Graphs

Total Assets Over Time

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

$3,902,082$1,951,041$0200320142025YearValue
$3,902,082Latest year 2025

Participants Over Time

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

59300200320142025YearValue
44Latest 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
2025144$3,902,082$266,410$6,055iApproximate average salary by contribution assumption: employee only about $151,369 at 4% or $100,913 at 6%; with 50% employer match about $100,913 at 4% or $67,275 at 6%; with 100% employer match about $75,685 at 4% or $50,456 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-44$3,902,082$266,410$6,055iApproximate average salary by contribution assumption: employee only about $151,369 at 4% or $100,913 at 6%; with 50% employer match about $100,913 at 4% or $67,275 at 6%; with 100% employer match about $75,685 at 4% or $50,456 at 6%.
2024159$3,239,517$251,340$4,260iApproximate average salary by contribution assumption: employee only about $106,500 at 4% or $71,000 at 6%; with 50% employer match about $71,000 at 4% or $47,333 at 6%; with 100% employer match about $53,250 at 4% or $35,500 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-59$3,239,517$251,340$4,260iApproximate average salary by contribution assumption: employee only about $106,500 at 4% or $71,000 at 6%; with 50% employer match about $71,000 at 4% or $47,333 at 6%; with 100% employer match about $53,250 at 4% or $35,500 at 6%.
2023156$2,859,855$282,621$5,047iApproximate average salary by contribution assumption: employee only about $126,170 at 4% or $84,113 at 6%; with 50% employer match about $84,113 at 4% or $56,076 at 6%; with 100% employer match about $63,085 at 4% or $42,057 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-56$2,859,855$282,621$5,047iApproximate average salary by contribution assumption: employee only about $126,170 at 4% or $84,113 at 6%; with 50% employer match about $84,113 at 4% or $56,076 at 6%; with 100% employer match about $63,085 at 4% or $42,057 at 6%.
2022145$2,507,494$179,671$3,993iApproximate average salary by contribution assumption: employee only about $99,817 at 4% or $66,545 at 6%; with 50% employer match about $66,545 at 4% or $44,363 at 6%; with 100% employer match about $49,909 at 4% or $33,272 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-45$2,507,494$179,671$3,993iApproximate average salary by contribution assumption: employee only about $99,817 at 4% or $66,545 at 6%; with 50% employer match about $66,545 at 4% or $44,363 at 6%; with 100% employer match about $49,909 at 4% or $33,272 at 6%.
2021149$3,533,069$179,002$3,653iApproximate average salary by contribution assumption: employee only about $91,328 at 4% or $60,885 at 6%; with 50% employer match about $60,885 at 4% or $40,590 at 6%; with 100% employer match about $45,664 at 4% or $30,443 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-49$3,533,069$179,002$3,653iApproximate average salary by contribution assumption: employee only about $91,328 at 4% or $60,885 at 6%; with 50% employer match about $60,885 at 4% or $40,590 at 6%; with 100% employer match about $45,664 at 4% or $30,443 at 6%.
2020148$3,233,796$187,520$3,907iApproximate average salary by contribution assumption: employee only about $97,667 at 4% or $65,111 at 6%; with 50% employer match about $65,111 at 4% or $43,407 at 6%; with 100% employer match about $48,833 at 4% or $32,556 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-48$3,233,796$187,520$3,907iApproximate average salary by contribution assumption: employee only about $97,667 at 4% or $65,111 at 6%; with 50% employer match about $65,111 at 4% or $43,407 at 6%; with 100% employer match about $48,833 at 4% or $32,556 at 6%.
2019144$2,724,540$175,190$3,982iApproximate average salary by contribution assumption: employee only about $99,540 at 4% or $66,360 at 6%; with 50% employer match about $66,360 at 4% or $44,240 at 6%; with 100% employer match about $49,770 at 4% or $33,180 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-44$2,724,540$175,190$3,982iApproximate average salary by contribution assumption: employee only about $99,540 at 4% or $66,360 at 6%; with 50% employer match about $66,360 at 4% or $44,240 at 6%; with 100% employer match about $49,770 at 4% or $33,180 at 6%.
2018142$2,304,176$192,294$4,578iApproximate average salary by contribution assumption: employee only about $114,461 at 4% or $76,307 at 6%; with 50% employer match about $76,307 at 4% or $50,871 at 6%; with 100% employer match about $57,230 at 4% or $38,154 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-42$2,304,176$192,294$4,578iApproximate average salary by contribution assumption: employee only about $114,461 at 4% or $76,307 at 6%; with 50% employer match about $76,307 at 4% or $50,871 at 6%; with 100% employer match about $57,230 at 4% or $38,154 at 6%.
2017136$2,915,572$197,188$5,477iApproximate average salary by contribution assumption: employee only about $136,936 at 4% or $91,291 at 6%; with 50% employer match about $91,291 at 4% or $60,860 at 6%; with 100% employer match about $68,468 at 4% or $45,645 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-36$2,915,572$197,188$5,477iApproximate average salary by contribution assumption: employee only about $136,936 at 4% or $91,291 at 6%; with 50% employer match about $91,291 at 4% or $60,860 at 6%; with 100% employer match about $68,468 at 4% or $45,645 at 6%.
2016139$2,604,132$171,990$4,410iApproximate average salary by contribution assumption: employee only about $110,250 at 4% or $73,500 at 6%; with 50% employer match about $73,500 at 4% or $49,000 at 6%; with 100% employer match about $55,125 at 4% or $36,750 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-39$2,604,132$171,990$4,410iApproximate average salary by contribution assumption: employee only about $110,250 at 4% or $73,500 at 6%; with 50% employer match about $73,500 at 4% or $49,000 at 6%; with 100% employer match about $55,125 at 4% or $36,750 at 6%.
2015140$2,406,027$171,592$4,290iApproximate average salary by contribution assumption: employee only about $107,245 at 4% or $71,497 at 6%; with 50% employer match about $71,497 at 4% or $47,664 at 6%; with 100% employer match about $53,623 at 4% or $35,748 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-40$2,406,027$171,592$4,290iApproximate average salary by contribution assumption: employee only about $107,245 at 4% or $71,497 at 6%; with 50% employer match about $71,497 at 4% or $47,664 at 6%; with 100% employer match about $53,623 at 4% or $35,748 at 6%.
2014135$2,477,746$160,105$4,574iApproximate average salary by contribution assumption: employee only about $114,361 at 4% or $76,240 at 6%; with 50% employer match about $76,240 at 4% or $50,827 at 6%; with 100% employer match about $57,180 at 4% or $38,120 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-35$2,477,746$160,105$4,574iApproximate average salary by contribution assumption: employee only about $114,361 at 4% or $76,240 at 6%; with 50% employer match about $76,240 at 4% or $50,827 at 6%; with 100% employer match about $57,180 at 4% or $38,120 at 6%.
2013136$2,241,532$154,163$4,282iApproximate average salary by contribution assumption: employee only about $107,058 at 4% or $71,372 at 6%; with 50% employer match about $71,372 at 4% or $47,581 at 6%; with 100% employer match about $53,529 at 4% or $35,686 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-36$2,241,532$154,163$4,282iApproximate average salary by contribution assumption: employee only about $107,058 at 4% or $71,372 at 6%; with 50% employer match about $71,372 at 4% or $47,581 at 6%; with 100% employer match about $53,529 at 4% or $35,686 at 6%.
2012136$1,758,999$156,586$4,350iApproximate average salary by contribution assumption: employee only about $108,740 at 4% or $72,494 at 6%; with 50% employer match about $72,494 at 4% or $48,329 at 6%; with 100% employer match about $54,370 at 4% or $36,247 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-36$1,758,999$156,586$4,350iApproximate average salary by contribution assumption: employee only about $108,740 at 4% or $72,494 at 6%; with 50% employer match about $72,494 at 4% or $48,329 at 6%; with 100% employer match about $54,370 at 4% or $36,247 at 6%.
2011135$1,433,558$152,296$4,351iApproximate average salary by contribution assumption: employee only about $108,783 at 4% or $72,522 at 6%; with 50% employer match about $72,522 at 4% or $48,348 at 6%; with 100% employer match about $54,391 at 4% or $36,261 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-35$1,433,558$152,296$4,351iApproximate average salary by contribution assumption: employee only about $108,783 at 4% or $72,522 at 6%; with 50% employer match about $72,522 at 4% or $48,348 at 6%; with 100% employer match about $54,391 at 4% or $36,261 at 6%.
2010156$1,411,898$135,129$2,413iApproximate average salary by contribution assumption: employee only about $60,325 at 4% or $40,217 at 6%; with 50% employer match about $40,217 at 4% or $26,811 at 6%; with 100% employer match about $30,163 at 4% or $20,108 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-56$1,411,898$135,129$2,413iApproximate average salary by contribution assumption: employee only about $60,325 at 4% or $40,217 at 6%; with 50% employer match about $40,217 at 4% or $26,811 at 6%; with 100% employer match about $30,163 at 4% or $20,108 at 6%.
2009151$1,317,994$143,900$2,822iApproximate average salary by contribution assumption: employee only about $70,539 at 4% or $47,026 at 6%; with 50% employer match about $47,026 at 4% or $31,351 at 6%; with 100% employer match about $35,270 at 4% or $23,513 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-51$1,317,994$143,900$2,822iApproximate average salary by contribution assumption: employee only about $70,539 at 4% or $47,026 at 6%; with 50% employer match about $47,026 at 4% or $31,351 at 6%; with 100% employer match about $35,270 at 4% or $23,513 at 6%.
2008140$1,135,146$123,265$3,082iApproximate average salary by contribution assumption: employee only about $77,041 at 4% or $51,360 at 6%; with 50% employer match about $51,360 at 4% or $34,240 at 6%; with 100% employer match about $38,520 at 4% or $25,680 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-40$1,135,146$123,265$3,082iApproximate average salary by contribution assumption: employee only about $77,041 at 4% or $51,360 at 6%; with 50% employer match about $51,360 at 4% or $34,240 at 6%; with 100% employer match about $38,520 at 4% or $25,680 at 6%.
2007140$1,455,802$99,140$2,479iApproximate average salary by contribution assumption: employee only about $61,963 at 4% or $41,308 at 6%; with 50% employer match about $41,308 at 4% or $27,539 at 6%; with 100% employer match about $30,981 at 4% or $20,654 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-40$1,455,802$99,140$2,479iApproximate average salary by contribution assumption: employee only about $61,963 at 4% or $41,308 at 6%; with 50% employer match about $41,308 at 4% or $27,539 at 6%; with 100% employer match about $30,981 at 4% or $20,654 at 6%.
2006144$1,320,959$81,727$1,857iApproximate average salary by contribution assumption: employee only about $46,436 at 4% or $30,957 at 6%; with 50% employer match about $30,957 at 4% or $20,638 at 6%; with 100% employer match about $23,218 at 4% or $15,479 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-44$1,320,959$81,727$1,857iApproximate average salary by contribution assumption: employee only about $46,436 at 4% or $30,957 at 6%; with 50% employer match about $30,957 at 4% or $20,638 at 6%; with 100% employer match about $23,218 at 4% or $15,479 at 6%.
2005142$1,145,425$81,945$1,951iApproximate average salary by contribution assumption: employee only about $48,777 at 4% or $32,518 at 6%; with 50% employer match about $32,518 at 4% or $21,679 at 6%; with 100% employer match about $24,388 at 4% or $16,259 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-42$1,145,425$81,945$1,951iApproximate average salary by contribution assumption: employee only about $48,777 at 4% or $32,518 at 6%; with 50% employer match about $32,518 at 4% or $21,679 at 6%; with 100% employer match about $24,388 at 4% or $16,259 at 6%.
2004145$1,017,309$80,658$1,792iApproximate average salary by contribution assumption: employee only about $44,810 at 4% or $29,873 at 6%; with 50% employer match about $29,873 at 4% or $19,916 at 6%; with 100% employer match about $22,405 at 4% or $14,937 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-45$1,017,309$80,658$1,792iApproximate average salary by contribution assumption: employee only about $44,810 at 4% or $29,873 at 6%; with 50% employer match about $29,873 at 4% or $19,916 at 6%; with 100% employer match about $22,405 at 4% or $14,937 at 6%.
2003142$873,903$96,715$2,303iApproximate average salary by contribution assumption: employee only about $57,568 at 4% or $38,379 at 6%; with 50% employer match about $38,379 at 4% or $25,586 at 6%; with 100% employer match about $28,784 at 4% or $19,189 at 6%.
Sioux City Engineering Company 401(K) Plan and Trust-42$873,903$96,715$2,303iApproximate average salary by contribution assumption: employee only about $57,568 at 4% or $38,379 at 6%; with 50% employer match about $38,379 at 4% or $25,586 at 6%; with 100% employer match about $28,784 at 4% or $19,189 at 6%.