Civic Intelligence

Duplantis Design Group PC

Plan context: Duplantis Engineering Inc. 401K Plan

EIN 72-1359963 • Thibodaux, LA • 30 filings • 6 plans

314 East Bayou RoadThibodaux, LA 70301
Current Snapshot

Latest Year

2025

2025 Participants

185

2025 Assets

$17,090,385

2025 Contributions

$2,711,591

Historical Graphs

Total Assets Over Time

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

$17,090,385$8,545,193$0199920122024YearValue
$17,090,385Latest year 2024

Participants Over Time

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

185930199920122025YearValue
185Latest 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
20251185$0$0-
Ddg Health and Welfare Benefits Plan-185---
20242178$17,090,385$2,711,591$15,234iApproximate average salary by contribution assumption: employee only about $380,841 at 4% or $253,894 at 6%; with 50% employer match about $253,894 at 4% or $169,263 at 6%; with 100% employer match about $190,421 at 4% or $126,947 at 6%.
Duplantis Engineering Inc. 401K Plan-178$17,090,385$2,711,591$15,234iApproximate average salary by contribution assumption: employee only about $380,841 at 4% or $253,894 at 6%; with 50% employer match about $253,894 at 4% or $169,263 at 6%; with 100% employer match about $190,421 at 4% or $126,947 at 6%.
Ddg Health and Welfare Benefits Plan-155---
20232178$12,814,312$1,375,489$7,727iApproximate average salary by contribution assumption: employee only about $193,187 at 4% or $128,791 at 6%; with 50% employer match about $128,791 at 4% or $85,861 at 6%; with 100% employer match about $96,593 at 4% or $64,396 at 6%.
Duplantis Engineering Inc. 401K Plan-178$12,814,312$1,375,489$7,727iApproximate average salary by contribution assumption: employee only about $193,187 at 4% or $128,791 at 6%; with 50% employer match about $128,791 at 4% or $85,861 at 6%; with 100% employer match about $96,593 at 4% or $64,396 at 6%.
Ddg Health and Welfare Benefits Plan-131---
20222136$10,667,587$1,132,366$8,326iApproximate average salary by contribution assumption: employee only about $208,156 at 4% or $138,770 at 6%; with 50% employer match about $138,770 at 4% or $92,514 at 6%; with 100% employer match about $104,078 at 4% or $69,385 at 6%.
Duplantis Engineering Inc. 401K Plan-136$10,667,587$1,132,366$8,326iApproximate average salary by contribution assumption: employee only about $208,156 at 4% or $138,770 at 6%; with 50% employer match about $138,770 at 4% or $92,514 at 6%; with 100% employer match about $104,078 at 4% or $69,385 at 6%.
Ddg Health and Welfare Benefits Plan-127---
20211110$12,007,435$897,417$8,158iApproximate average salary by contribution assumption: employee only about $203,958 at 4% or $135,972 at 6%; with 50% employer match about $135,972 at 4% or $90,648 at 6%; with 100% employer match about $101,979 at 4% or $67,986 at 6%.
Duplantis Engineering Inc. 401K Plan-110$12,007,435$897,417$8,158iApproximate average salary by contribution assumption: employee only about $203,958 at 4% or $135,972 at 6%; with 50% employer match about $135,972 at 4% or $90,648 at 6%; with 100% employer match about $101,979 at 4% or $67,986 at 6%.
20201103$10,161,991$885,204$8,594iApproximate average salary by contribution assumption: employee only about $214,855 at 4% or $143,237 at 6%; with 50% employer match about $143,237 at 4% or $95,491 at 6%; with 100% employer match about $107,428 at 4% or $71,618 at 6%.
Duplantis Engineering Inc. 401K Plan-103$10,161,991$885,204$8,594iApproximate average salary by contribution assumption: employee only about $214,855 at 4% or $143,237 at 6%; with 50% employer match about $143,237 at 4% or $95,491 at 6%; with 100% employer match about $107,428 at 4% or $71,618 at 6%.
20191107$8,465,977$784,244$7,329iApproximate average salary by contribution assumption: employee only about $183,235 at 4% or $122,156 at 6%; with 50% employer match about $122,156 at 4% or $81,438 at 6%; with 100% employer match about $91,617 at 4% or $61,078 at 6%.
Duplantis Engineering Inc. 401K Plan-107$8,465,977$784,244$7,329iApproximate average salary by contribution assumption: employee only about $183,235 at 4% or $122,156 at 6%; with 50% employer match about $122,156 at 4% or $81,438 at 6%; with 100% employer match about $91,617 at 4% or $61,078 at 6%.
20181102$6,952,424$1,693,476$16,603iApproximate average salary by contribution assumption: employee only about $415,068 at 4% or $276,712 at 6%; with 50% employer match about $276,712 at 4% or $184,475 at 6%; with 100% employer match about $207,534 at 4% or $138,356 at 6%.
Duplantis Engineering Inc. 401K Plan-102$6,952,424$1,693,476$16,603iApproximate average salary by contribution assumption: employee only about $415,068 at 4% or $276,712 at 6%; with 50% employer match about $276,712 at 4% or $184,475 at 6%; with 100% employer match about $207,534 at 4% or $138,356 at 6%.
2017170$5,782,201$536,273$7,661iApproximate average salary by contribution assumption: employee only about $191,526 at 4% or $127,684 at 6%; with 50% employer match about $127,684 at 4% or $85,123 at 6%; with 100% employer match about $95,763 at 4% or $63,842 at 6%.
Duplantis Engineering Inc. 401K Plan-70$5,782,201$536,273$7,661iApproximate average salary by contribution assumption: employee only about $191,526 at 4% or $127,684 at 6%; with 50% employer match about $127,684 at 4% or $85,123 at 6%; with 100% employer match about $95,763 at 4% or $63,842 at 6%.
2016173$4,526,047$529,815$7,258iApproximate average salary by contribution assumption: employee only about $181,443 at 4% or $120,962 at 6%; with 50% employer match about $120,962 at 4% or $80,642 at 6%; with 100% employer match about $90,722 at 4% or $60,481 at 6%.
Duplantis Engineering Inc. 401K Plan-73$4,526,047$529,815$7,258iApproximate average salary by contribution assumption: employee only about $181,443 at 4% or $120,962 at 6%; with 50% employer match about $120,962 at 4% or $80,642 at 6%; with 100% employer match about $90,722 at 4% or $60,481 at 6%.
2015171$3,878,220$489,296$6,891iApproximate average salary by contribution assumption: employee only about $172,287 at 4% or $114,858 at 6%; with 50% employer match about $114,858 at 4% or $76,572 at 6%; with 100% employer match about $86,144 at 4% or $57,429 at 6%.
Duplantis Engineering Inc. 401K Plan-71$3,878,220$489,296$6,891iApproximate average salary by contribution assumption: employee only about $172,287 at 4% or $114,858 at 6%; with 50% employer match about $114,858 at 4% or $76,572 at 6%; with 100% employer match about $86,144 at 4% or $57,429 at 6%.
2014159$3,512,235$345,393$5,854iApproximate average salary by contribution assumption: employee only about $146,353 at 4% or $97,569 at 6%; with 50% employer match about $97,569 at 4% or $65,046 at 6%; with 100% employer match about $73,176 at 4% or $48,784 at 6%.
Duplantis Engineering Inc. 401K Plan-59$3,512,235$345,393$5,854iApproximate average salary by contribution assumption: employee only about $146,353 at 4% or $97,569 at 6%; with 50% employer match about $97,569 at 4% or $65,046 at 6%; with 100% employer match about $73,176 at 4% or $48,784 at 6%.
2013150$3,118,464$310,637$6,213iApproximate average salary by contribution assumption: employee only about $155,319 at 4% or $103,546 at 6%; with 50% employer match about $103,546 at 4% or $69,030 at 6%; with 100% employer match about $77,659 at 4% or $51,773 at 6%.
Duplantis Engineering Inc. 401K Plan-50$3,118,464$310,637$6,213iApproximate average salary by contribution assumption: employee only about $155,319 at 4% or $103,546 at 6%; with 50% employer match about $103,546 at 4% or $69,030 at 6%; with 100% employer match about $77,659 at 4% or $51,773 at 6%.
2012147$2,389,760$285,125$6,066iApproximate average salary by contribution assumption: employee only about $151,662 at 4% or $101,108 at 6%; with 50% employer match about $101,108 at 4% or $67,405 at 6%; with 100% employer match about $75,831 at 4% or $50,554 at 6%.
Duplantis Engineering Inc. 401K Plan-47$2,389,760$285,125$6,066iApproximate average salary by contribution assumption: employee only about $151,662 at 4% or $101,108 at 6%; with 50% employer match about $101,108 at 4% or $67,405 at 6%; with 100% employer match about $75,831 at 4% or $50,554 at 6%.
2011147$1,981,087$252,247$5,367iApproximate average salary by contribution assumption: employee only about $134,174 at 4% or $89,449 at 6%; with 50% employer match about $89,449 at 4% or $59,633 at 6%; with 100% employer match about $67,087 at 4% or $44,725 at 6%.
Duplantis Engineering Inc. 401K Plan-47$1,981,087$252,247$5,367iApproximate average salary by contribution assumption: employee only about $134,174 at 4% or $89,449 at 6%; with 50% employer match about $89,449 at 4% or $59,633 at 6%; with 100% employer match about $67,087 at 4% or $44,725 at 6%.
2010149$1,878,337$176,812$3,608iApproximate average salary by contribution assumption: employee only about $90,210 at 4% or $60,140 at 6%; with 50% employer match about $60,140 at 4% or $40,093 at 6%; with 100% employer match about $45,105 at 4% or $30,070 at 6%.
Duplantis Engineering Inc. 401K Plan-49$1,878,337$176,812$3,608iApproximate average salary by contribution assumption: employee only about $90,210 at 4% or $60,140 at 6%; with 50% employer match about $60,140 at 4% or $40,093 at 6%; with 100% employer match about $45,105 at 4% or $30,070 at 6%.
2009153$1,530,339$207,435$3,914iApproximate average salary by contribution assumption: employee only about $97,847 at 4% or $65,231 at 6%; with 50% employer match about $65,231 at 4% or $43,487 at 6%; with 100% employer match about $48,923 at 4% or $32,616 at 6%.
Duplantis Engineering Inc. 401K Plan-53$1,530,339$207,435$3,914iApproximate average salary by contribution assumption: employee only about $97,847 at 4% or $65,231 at 6%; with 50% employer match about $65,231 at 4% or $43,487 at 6%; with 100% employer match about $48,923 at 4% or $32,616 at 6%.
2008145$1,046,936$311,412$6,920iApproximate average salary by contribution assumption: employee only about $173,007 at 4% or $115,338 at 6%; with 50% employer match about $115,338 at 4% or $76,892 at 6%; with 100% employer match about $86,503 at 4% or $57,669 at 6%.
Duplantis Engineering Inc. 401K Plan-45$1,046,936$311,412$6,920iApproximate average salary by contribution assumption: employee only about $173,007 at 4% or $115,338 at 6%; with 50% employer match about $115,338 at 4% or $76,892 at 6%; with 100% employer match about $86,503 at 4% or $57,669 at 6%.
2007136$1,273,251$267,037$7,418iApproximate average salary by contribution assumption: employee only about $185,442 at 4% or $123,628 at 6%; with 50% employer match about $123,628 at 4% or $82,419 at 6%; with 100% employer match about $92,721 at 4% or $61,814 at 6%.
Duplantis Engineering Inc. 401K Plan-36$1,273,251$267,037$7,418iApproximate average salary by contribution assumption: employee only about $185,442 at 4% or $123,628 at 6%; with 50% employer match about $123,628 at 4% or $82,419 at 6%; with 100% employer match about $92,721 at 4% or $61,814 at 6%.
2006128$974,480$200,010$7,143iApproximate average salary by contribution assumption: employee only about $178,580 at 4% or $119,054 at 6%; with 50% employer match about $119,054 at 4% or $79,369 at 6%; with 100% employer match about $89,290 at 4% or $59,527 at 6%.
Duplantis Engineering Inc. 401K Plan-28$974,480$200,010$7,143iApproximate average salary by contribution assumption: employee only about $178,580 at 4% or $119,054 at 6%; with 50% employer match about $119,054 at 4% or $79,369 at 6%; with 100% employer match about $89,290 at 4% or $59,527 at 6%.
2005124$759,142$146,907$6,121iApproximate average salary by contribution assumption: employee only about $153,028 at 4% or $102,019 at 6%; with 50% employer match about $102,019 at 4% or $68,013 at 6%; with 100% employer match about $76,514 at 4% or $51,009 at 6%.
Duplantis Engineering Inc. 401K Plan-24$759,142$146,907$6,121iApproximate average salary by contribution assumption: employee only about $153,028 at 4% or $102,019 at 6%; with 50% employer match about $102,019 at 4% or $68,013 at 6%; with 100% employer match about $76,514 at 4% or $51,009 at 6%.
2004123$574,170$127,027$5,523iApproximate average salary by contribution assumption: employee only about $138,073 at 4% or $92,049 at 6%; with 50% employer match about $92,049 at 4% or $61,366 at 6%; with 100% employer match about $69,036 at 4% or $46,024 at 6%.
Duplantis Engineering Inc. 401K Plan-23$574,170$127,027$5,523iApproximate average salary by contribution assumption: employee only about $138,073 at 4% or $92,049 at 6%; with 50% employer match about $92,049 at 4% or $61,366 at 6%; with 100% employer match about $69,036 at 4% or $46,024 at 6%.
2003121$454,389$123,477$5,880iApproximate average salary by contribution assumption: employee only about $146,996 at 4% or $97,998 at 6%; with 50% employer match about $97,998 at 4% or $65,332 at 6%; with 100% employer match about $73,498 at 4% or $48,999 at 6%.
Duplantis Engineering Inc. 401K Plan-21$454,389$123,477$5,880iApproximate average salary by contribution assumption: employee only about $146,996 at 4% or $97,998 at 6%; with 50% employer match about $97,998 at 4% or $65,332 at 6%; with 100% employer match about $73,498 at 4% or $48,999 at 6%.
2002121$265,141$100,861$4,803iApproximate average salary by contribution assumption: employee only about $120,073 at 4% or $80,048 at 6%; with 50% employer match about $80,048 at 4% or $53,366 at 6%; with 100% employer match about $60,036 at 4% or $40,024 at 6%.
Duplantis Engineering Inc. 401K Plan-21$265,141$100,861$4,803iApproximate average salary by contribution assumption: employee only about $120,073 at 4% or $80,048 at 6%; with 50% employer match about $80,048 at 4% or $53,366 at 6%; with 100% employer match about $60,036 at 4% or $40,024 at 6%.
2001114$0$0-
Duplantis Engineering Inc. 401K Plan-14---
2000110$166,402$57,375$5,738iApproximate average salary by contribution assumption: employee only about $143,438 at 4% or $95,625 at 6%; with 50% employer match about $95,625 at 4% or $63,750 at 6%; with 100% employer match about $71,719 at 4% or $47,813 at 6%.
Duplantis Engineering Inc. 401K Plan-10$166,402$57,375$5,738iApproximate average salary by contribution assumption: employee only about $143,438 at 4% or $95,625 at 6%; with 50% employer match about $95,625 at 4% or $63,750 at 6%; with 100% employer match about $71,719 at 4% or $47,813 at 6%.
199918$137,620$45,800$5,725iApproximate average salary by contribution assumption: employee only about $143,125 at 4% or $95,417 at 6%; with 50% employer match about $95,417 at 4% or $63,611 at 6%; with 100% employer match about $71,563 at 4% or $47,708 at 6%.
Duplantis Engineering Inc. 401K Plan-8$137,620$45,800$5,725iApproximate average salary by contribution assumption: employee only about $143,125 at 4% or $95,417 at 6%; with 50% employer match about $95,417 at 4% or $63,611 at 6%; with 100% employer match about $71,563 at 4% or $47,708 at 6%.