Civic Intelligence

Hydro Dynamics Corp.

Plan context: Hydro Dynamics Corp. 401K Plan

EIN 43-1363197 • Saint Louis, MO • 25 filings • 1 plans

9211 Olive Blvd.Saint Louis, MO 63132
Current Snapshot

Latest Year

2024

2024 Participants

25

2024 Assets

$1,675,918

2024 Contributions

$122,563

Historical Graphs

Total Assets Over Time

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

$1,675,918$837,959$0200020142024YearValue
$1,675,918Latest year 2024

Participants Over Time

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

35180200020122024YearValue
25Latest year 2024

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
2024125$1,675,918$122,563$4,903iApproximate average salary by contribution assumption: employee only about $122,563 at 4% or $81,709 at 6%; with 50% employer match about $81,709 at 4% or $54,472 at 6%; with 100% employer match about $61,282 at 4% or $40,854 at 6%.
Hydro Dynamics Corp. 401K Plan-25$1,675,918$122,563$4,903iApproximate average salary by contribution assumption: employee only about $122,563 at 4% or $81,709 at 6%; with 50% employer match about $81,709 at 4% or $54,472 at 6%; with 100% employer match about $61,282 at 4% or $40,854 at 6%.
2023125$1,459,493$111,161$4,446iApproximate average salary by contribution assumption: employee only about $111,161 at 4% or $74,107 at 6%; with 50% employer match about $74,107 at 4% or $49,405 at 6%; with 100% employer match about $55,580 at 4% or $37,054 at 6%.
Hydro Dynamics Corp. 401K Plan-25$1,459,493$111,161$4,446iApproximate average salary by contribution assumption: employee only about $111,161 at 4% or $74,107 at 6%; with 50% employer match about $74,107 at 4% or $49,405 at 6%; with 100% employer match about $55,580 at 4% or $37,054 at 6%.
2022131$1,438,554$118,741$3,830iApproximate average salary by contribution assumption: employee only about $95,759 at 4% or $63,839 at 6%; with 50% employer match about $63,839 at 4% or $42,559 at 6%; with 100% employer match about $47,879 at 4% or $31,920 at 6%.
Hydro Dynamics Corp. 401K Plan-31$1,438,554$118,741$3,830iApproximate average salary by contribution assumption: employee only about $95,759 at 4% or $63,839 at 6%; with 50% employer match about $63,839 at 4% or $42,559 at 6%; with 100% employer match about $47,879 at 4% or $31,920 at 6%.
2021130$1,573,676$115,625$3,854iApproximate average salary by contribution assumption: employee only about $96,354 at 4% or $64,236 at 6%; with 50% employer match about $64,236 at 4% or $42,824 at 6%; with 100% employer match about $48,177 at 4% or $32,118 at 6%.
Hydro Dynamics Corp. 401K Plan-30$1,573,676$115,625$3,854iApproximate average salary by contribution assumption: employee only about $96,354 at 4% or $64,236 at 6%; with 50% employer match about $64,236 at 4% or $42,824 at 6%; with 100% employer match about $48,177 at 4% or $32,118 at 6%.
2020130$1,572,234$130,644$4,355iApproximate average salary by contribution assumption: employee only about $108,870 at 4% or $72,580 at 6%; with 50% employer match about $72,580 at 4% or $48,387 at 6%; with 100% employer match about $54,435 at 4% or $36,290 at 6%.
Hydro Dynamics Corp. 401K Plan-30$1,572,234$130,644$4,355iApproximate average salary by contribution assumption: employee only about $108,870 at 4% or $72,580 at 6%; with 50% employer match about $72,580 at 4% or $48,387 at 6%; with 100% employer match about $54,435 at 4% or $36,290 at 6%.
2019130$1,288,044$79,501$2,650iApproximate average salary by contribution assumption: employee only about $66,251 at 4% or $44,167 at 6%; with 50% employer match about $44,167 at 4% or $29,445 at 6%; with 100% employer match about $33,125 at 4% or $22,084 at 6%.
Hydro Dynamics Corp. 401K Plan-30$1,288,044$79,501$2,650iApproximate average salary by contribution assumption: employee only about $66,251 at 4% or $44,167 at 6%; with 50% employer match about $44,167 at 4% or $29,445 at 6%; with 100% employer match about $33,125 at 4% or $22,084 at 6%.
2018132$1,228,606$78,659$2,458iApproximate average salary by contribution assumption: employee only about $61,452 at 4% or $40,968 at 6%; with 50% employer match about $40,968 at 4% or $27,312 at 6%; with 100% employer match about $30,726 at 4% or $20,484 at 6%.
Hydro Dynamics Corp. 401K Plan-32$1,228,606$78,659$2,458iApproximate average salary by contribution assumption: employee only about $61,452 at 4% or $40,968 at 6%; with 50% employer match about $40,968 at 4% or $27,312 at 6%; with 100% employer match about $30,726 at 4% or $20,484 at 6%.
2017129$1,287,926$77,881$2,686iApproximate average salary by contribution assumption: employee only about $67,139 at 4% or $44,759 at 6%; with 50% employer match about $44,759 at 4% or $29,839 at 6%; with 100% employer match about $33,569 at 4% or $22,380 at 6%.
Hydro Dynamics Corp. 401K Plan-29$1,287,926$77,881$2,686iApproximate average salary by contribution assumption: employee only about $67,139 at 4% or $44,759 at 6%; with 50% employer match about $44,759 at 4% or $29,839 at 6%; with 100% employer match about $33,569 at 4% or $22,380 at 6%.
2016134$1,141,068$74,157$2,181iApproximate average salary by contribution assumption: employee only about $54,527 at 4% or $36,351 at 6%; with 50% employer match about $36,351 at 4% or $24,234 at 6%; with 100% employer match about $27,264 at 4% or $18,176 at 6%.
Hydro Dynamics Corp. 401K Plan-34$1,141,068$74,157$2,181iApproximate average salary by contribution assumption: employee only about $54,527 at 4% or $36,351 at 6%; with 50% employer match about $36,351 at 4% or $24,234 at 6%; with 100% employer match about $27,264 at 4% or $18,176 at 6%.
2015134$1,040,327$66,376$1,952iApproximate average salary by contribution assumption: employee only about $48,806 at 4% or $32,537 at 6%; with 50% employer match about $32,537 at 4% or $21,692 at 6%; with 100% employer match about $24,403 at 4% or $16,269 at 6%.
Hydro Dynamics Corp. 401K Plan-34$1,040,327$66,376$1,952iApproximate average salary by contribution assumption: employee only about $48,806 at 4% or $32,537 at 6%; with 50% employer match about $32,537 at 4% or $21,692 at 6%; with 100% employer match about $24,403 at 4% or $16,269 at 6%.
2014135$1,049,653$61,746$1,764iApproximate average salary by contribution assumption: employee only about $44,104 at 4% or $29,403 at 6%; with 50% employer match about $29,403 at 4% or $19,602 at 6%; with 100% employer match about $22,052 at 4% or $14,701 at 6%.
Hydro Dynamics Corp. 401K Plan-35$1,049,653$61,746$1,764iApproximate average salary by contribution assumption: employee only about $44,104 at 4% or $29,403 at 6%; with 50% employer match about $29,403 at 4% or $19,602 at 6%; with 100% employer match about $22,052 at 4% or $14,701 at 6%.
2013134$930,179$60,821$1,789iApproximate average salary by contribution assumption: employee only about $44,721 at 4% or $29,814 at 6%; with 50% employer match about $29,814 at 4% or $19,876 at 6%; with 100% employer match about $22,361 at 4% or $14,907 at 6%.
Hydro Dynamics Corp. 401K Plan-34$930,179$60,821$1,789iApproximate average salary by contribution assumption: employee only about $44,721 at 4% or $29,814 at 6%; with 50% employer match about $29,814 at 4% or $19,876 at 6%; with 100% employer match about $22,361 at 4% or $14,907 at 6%.
2012132$831,945$61,604$1,925iApproximate average salary by contribution assumption: employee only about $48,128 at 4% or $32,085 at 6%; with 50% employer match about $32,085 at 4% or $21,390 at 6%; with 100% employer match about $24,064 at 4% or $16,043 at 6%.
Hydro Dynamics Corp. 401K Plan-32$831,945$61,604$1,925iApproximate average salary by contribution assumption: employee only about $48,128 at 4% or $32,085 at 6%; with 50% employer match about $32,085 at 4% or $21,390 at 6%; with 100% employer match about $24,064 at 4% or $16,043 at 6%.
2011132$710,275$61,326$1,916iApproximate average salary by contribution assumption: employee only about $47,911 at 4% or $31,941 at 6%; with 50% employer match about $31,941 at 4% or $21,294 at 6%; with 100% employer match about $23,955 at 4% or $15,970 at 6%.
Hydro Dynamics Corp. 401K Plan-32$710,275$61,326$1,916iApproximate average salary by contribution assumption: employee only about $47,911 at 4% or $31,941 at 6%; with 50% employer match about $31,941 at 4% or $21,294 at 6%; with 100% employer match about $23,955 at 4% or $15,970 at 6%.
2010132$644,791$60,781$1,899iApproximate average salary by contribution assumption: employee only about $47,485 at 4% or $31,657 at 6%; with 50% employer match about $31,657 at 4% or $21,105 at 6%; with 100% employer match about $23,743 at 4% or $15,828 at 6%.
Hydro Dynamics Corp. 401K Plan-32$644,791$60,781$1,899iApproximate average salary by contribution assumption: employee only about $47,485 at 4% or $31,657 at 6%; with 50% employer match about $31,657 at 4% or $21,105 at 6%; with 100% employer match about $23,743 at 4% or $15,828 at 6%.
2009133$505,482$61,736$1,871iApproximate average salary by contribution assumption: employee only about $46,770 at 4% or $31,180 at 6%; with 50% employer match about $31,180 at 4% or $20,787 at 6%; with 100% employer match about $23,385 at 4% or $15,590 at 6%.
Hydro Dynamics Corp. 401K Plan-33$505,482$61,736$1,871iApproximate average salary by contribution assumption: employee only about $46,770 at 4% or $31,180 at 6%; with 50% employer match about $31,180 at 4% or $20,787 at 6%; with 100% employer match about $23,385 at 4% or $15,590 at 6%.
2008128$365,298$62,431$2,230iApproximate average salary by contribution assumption: employee only about $55,742 at 4% or $37,161 at 6%; with 50% employer match about $37,161 at 4% or $24,774 at 6%; with 100% employer match about $27,871 at 4% or $18,581 at 6%.
Hydro Dynamics Corp. 401K Plan-28$365,298$62,431$2,230iApproximate average salary by contribution assumption: employee only about $55,742 at 4% or $37,161 at 6%; with 50% employer match about $37,161 at 4% or $24,774 at 6%; with 100% employer match about $27,871 at 4% or $18,581 at 6%.
2007127$0$0-
Hydro Dynamics Corp. 401K Plan-27---
2006126$399,117$60,914$2,343iApproximate average salary by contribution assumption: employee only about $58,571 at 4% or $39,047 at 6%; with 50% employer match about $39,047 at 4% or $26,032 at 6%; with 100% employer match about $29,286 at 4% or $19,524 at 6%.
Hydro Dynamics Corp. 401K Plan-26$399,117$60,914$2,343iApproximate average salary by contribution assumption: employee only about $58,571 at 4% or $39,047 at 6%; with 50% employer match about $39,047 at 4% or $26,032 at 6%; with 100% employer match about $29,286 at 4% or $19,524 at 6%.
2005123$304,800$55,242$2,402iApproximate average salary by contribution assumption: employee only about $60,046 at 4% or $40,030 at 6%; with 50% employer match about $40,030 at 4% or $26,687 at 6%; with 100% employer match about $30,023 at 4% or $20,015 at 6%.
Hydro Dynamics Corp. 401K Plan-23$304,800$55,242$2,402iApproximate average salary by contribution assumption: employee only about $60,046 at 4% or $40,030 at 6%; with 50% employer match about $40,030 at 4% or $26,687 at 6%; with 100% employer match about $30,023 at 4% or $20,015 at 6%.
2004124$237,733$56,224$2,343iApproximate average salary by contribution assumption: employee only about $58,567 at 4% or $39,044 at 6%; with 50% employer match about $39,044 at 4% or $26,030 at 6%; with 100% employer match about $29,283 at 4% or $19,522 at 6%.
Hydro Dynamics Corp. 401K Plan-24$237,733$56,224$2,343iApproximate average salary by contribution assumption: employee only about $58,567 at 4% or $39,044 at 6%; with 50% employer match about $39,044 at 4% or $26,030 at 6%; with 100% employer match about $29,283 at 4% or $19,522 at 6%.
2003122$0$0-
Hydro Dynamics Corp. 401K Plan-22---
2002125$102,643$51,567$2,063iApproximate average salary by contribution assumption: employee only about $51,567 at 4% or $34,378 at 6%; with 50% employer match about $34,378 at 4% or $22,919 at 6%; with 100% employer match about $25,783 at 4% or $17,189 at 6%.
Hydro Dynamics Corp. 401K Plan-25$102,643$51,567$2,063iApproximate average salary by contribution assumption: employee only about $51,567 at 4% or $34,378 at 6%; with 50% employer match about $34,378 at 4% or $22,919 at 6%; with 100% employer match about $25,783 at 4% or $17,189 at 6%.
2001117$0$0-
Hydro Dynamics Corp. 401K Plan-17---
2000117$20,000$20,000$1,176iApproximate average salary by contribution assumption: employee only about $29,412 at 4% or $19,608 at 6%; with 50% employer match about $19,608 at 4% or $13,072 at 6%; with 100% employer match about $14,706 at 4% or $9,804 at 6%.
Hydro Dynamics Corp. 401K Plan-17$20,000$20,000$1,176iApproximate average salary by contribution assumption: employee only about $29,412 at 4% or $19,608 at 6%; with 50% employer match about $19,608 at 4% or $13,072 at 6%; with 100% employer match about $14,706 at 4% or $9,804 at 6%.