Civic Intelligence

HYDROSYSTEMS, INC.

Plan context: HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN

EIN 04-3412953 • Auburn, MA • 18 filings • 2 plans

13 Elm StAuburn, MA 01504
Current Snapshot

Latest Year

2025

2025 Participants

6

2025 Assets

$1,390,824

2025 Contributions

$75,112

Historical Graphs

Total Assets Over Time

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

$1,390,824$695,412$0200820172025YearValue
$1,390,824Latest year 2025

Participants Over Time

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

630200820172025YearValue
6Latest 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
202516$1,390,824$75,112$12,519iApproximate average salary by contribution assumption: employee only about $312,967 at 4% or $208,644 at 6%; with 50% employer match about $208,644 at 4% or $139,096 at 6%; with 100% employer match about $156,483 at 4% or $104,322 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-6$1,390,824$75,112$12,519iApproximate average salary by contribution assumption: employee only about $312,967 at 4% or $208,644 at 6%; with 50% employer match about $208,644 at 4% or $139,096 at 6%; with 100% employer match about $156,483 at 4% or $104,322 at 6%.
202416$1,153,694$88,038$14,673iApproximate average salary by contribution assumption: employee only about $366,825 at 4% or $244,550 at 6%; with 50% employer match about $244,550 at 4% or $163,033 at 6%; with 100% employer match about $183,413 at 4% or $122,275 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-6$1,153,694$88,038$14,673iApproximate average salary by contribution assumption: employee only about $366,825 at 4% or $244,550 at 6%; with 50% employer match about $244,550 at 4% or $163,033 at 6%; with 100% employer match about $183,413 at 4% or $122,275 at 6%.
202316$971,488$69,460$11,577iApproximate average salary by contribution assumption: employee only about $289,417 at 4% or $192,944 at 6%; with 50% employer match about $192,944 at 4% or $128,630 at 6%; with 100% employer match about $144,708 at 4% or $96,472 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-6$971,488$69,460$11,577iApproximate average salary by contribution assumption: employee only about $289,417 at 4% or $192,944 at 6%; with 50% employer match about $192,944 at 4% or $128,630 at 6%; with 100% employer match about $144,708 at 4% or $96,472 at 6%.
202215$786,197$45,491$9,098iApproximate average salary by contribution assumption: employee only about $227,455 at 4% or $151,637 at 6%; with 50% employer match about $151,637 at 4% or $101,091 at 6%; with 100% employer match about $113,728 at 4% or $75,818 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-5$786,197$45,491$9,098iApproximate average salary by contribution assumption: employee only about $227,455 at 4% or $151,637 at 6%; with 50% employer match about $151,637 at 4% or $101,091 at 6%; with 100% employer match about $113,728 at 4% or $75,818 at 6%.
202114$904,970$43,469$10,867iApproximate average salary by contribution assumption: employee only about $271,681 at 4% or $181,121 at 6%; with 50% employer match about $181,121 at 4% or $120,747 at 6%; with 100% employer match about $135,841 at 4% or $90,560 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-4$904,970$43,469$10,867iApproximate average salary by contribution assumption: employee only about $271,681 at 4% or $181,121 at 6%; with 50% employer match about $181,121 at 4% or $120,747 at 6%; with 100% employer match about $135,841 at 4% or $90,560 at 6%.
202014$762,518$42,275$10,569iApproximate average salary by contribution assumption: employee only about $264,219 at 4% or $176,146 at 6%; with 50% employer match about $176,146 at 4% or $117,431 at 6%; with 100% employer match about $132,109 at 4% or $88,073 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-4$762,518$42,275$10,569iApproximate average salary by contribution assumption: employee only about $264,219 at 4% or $176,146 at 6%; with 50% employer match about $176,146 at 4% or $117,431 at 6%; with 100% employer match about $132,109 at 4% or $88,073 at 6%.
201915$628,228$42,042$8,408iApproximate average salary by contribution assumption: employee only about $210,210 at 4% or $140,140 at 6%; with 50% employer match about $140,140 at 4% or $93,427 at 6%; with 100% employer match about $105,105 at 4% or $70,070 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-5$628,228$42,042$8,408iApproximate average salary by contribution assumption: employee only about $210,210 at 4% or $140,140 at 6%; with 50% employer match about $140,140 at 4% or $93,427 at 6%; with 100% employer match about $105,105 at 4% or $70,070 at 6%.
201814$583,172$56,115$14,029iApproximate average salary by contribution assumption: employee only about $350,719 at 4% or $233,813 at 6%; with 50% employer match about $233,813 at 4% or $155,875 at 6%; with 100% employer match about $175,359 at 4% or $116,906 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-4$583,172$56,115$14,029iApproximate average salary by contribution assumption: employee only about $350,719 at 4% or $233,813 at 6%; with 50% employer match about $233,813 at 4% or $155,875 at 6%; with 100% employer match about $175,359 at 4% or $116,906 at 6%.
201714$591,230$42,168$10,542iApproximate average salary by contribution assumption: employee only about $263,550 at 4% or $175,700 at 6%; with 50% employer match about $175,700 at 4% or $117,133 at 6%; with 100% employer match about $131,775 at 4% or $87,850 at 6%.
HYDROSYSTEMS, INC. 401(K) RETIREMENT PLAN-4$591,230$42,168$10,542iApproximate average salary by contribution assumption: employee only about $263,550 at 4% or $175,700 at 6%; with 50% employer match about $175,700 at 4% or $117,133 at 6%; with 100% employer match about $131,775 at 4% or $87,850 at 6%.
201614$473,904$34,664$8,666iApproximate average salary by contribution assumption: employee only about $216,650 at 4% or $144,433 at 6%; with 50% employer match about $144,433 at 4% or $96,289 at 6%; with 100% employer match about $108,325 at 4% or $72,217 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-4$473,904$34,664$8,666iApproximate average salary by contribution assumption: employee only about $216,650 at 4% or $144,433 at 6%; with 50% employer match about $144,433 at 4% or $96,289 at 6%; with 100% employer match about $108,325 at 4% or $72,217 at 6%.
201514$408,154$22,464$5,616iApproximate average salary by contribution assumption: employee only about $140,400 at 4% or $93,600 at 6%; with 50% employer match about $93,600 at 4% or $62,400 at 6%; with 100% employer match about $70,200 at 4% or $46,800 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-4$408,154$22,464$5,616iApproximate average salary by contribution assumption: employee only about $140,400 at 4% or $93,600 at 6%; with 50% employer match about $93,600 at 4% or $62,400 at 6%; with 100% employer match about $70,200 at 4% or $46,800 at 6%.
201413$394,712$16,097$5,366iApproximate average salary by contribution assumption: employee only about $134,142 at 4% or $89,428 at 6%; with 50% employer match about $89,428 at 4% or $59,619 at 6%; with 100% employer match about $67,071 at 4% or $44,714 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$394,712$16,097$5,366iApproximate average salary by contribution assumption: employee only about $134,142 at 4% or $89,428 at 6%; with 50% employer match about $89,428 at 4% or $59,619 at 6%; with 100% employer match about $67,071 at 4% or $44,714 at 6%.
201313$368,088$15,327$5,109iApproximate average salary by contribution assumption: employee only about $127,725 at 4% or $85,150 at 6%; with 50% employer match about $85,150 at 4% or $56,767 at 6%; with 100% employer match about $63,863 at 4% or $42,575 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$368,088$15,327$5,109iApproximate average salary by contribution assumption: employee only about $127,725 at 4% or $85,150 at 6%; with 50% employer match about $85,150 at 4% or $56,767 at 6%; with 100% employer match about $63,863 at 4% or $42,575 at 6%.
201213$290,592$14,510$4,837iApproximate average salary by contribution assumption: employee only about $120,917 at 4% or $80,611 at 6%; with 50% employer match about $80,611 at 4% or $53,741 at 6%; with 100% employer match about $60,458 at 4% or $40,306 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$290,592$14,510$4,837iApproximate average salary by contribution assumption: employee only about $120,917 at 4% or $80,611 at 6%; with 50% employer match about $80,611 at 4% or $53,741 at 6%; with 100% employer match about $60,458 at 4% or $40,306 at 6%.
201113$243,348$7,416$2,472iApproximate average salary by contribution assumption: employee only about $61,800 at 4% or $41,200 at 6%; with 50% employer match about $41,200 at 4% or $27,467 at 6%; with 100% employer match about $30,900 at 4% or $20,600 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$243,348$7,416$2,472iApproximate average salary by contribution assumption: employee only about $61,800 at 4% or $41,200 at 6%; with 50% employer match about $41,200 at 4% or $27,467 at 6%; with 100% employer match about $30,900 at 4% or $20,600 at 6%.
201013$252,001$2,271$757iApproximate average salary by contribution assumption: employee only about $18,925 at 4% or $12,617 at 6%; with 50% employer match about $12,617 at 4% or $8,411 at 6%; with 100% employer match about $9,463 at 4% or $6,308 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$252,001$2,271$757iApproximate average salary by contribution assumption: employee only about $18,925 at 4% or $12,617 at 6%; with 50% employer match about $12,617 at 4% or $8,411 at 6%; with 100% employer match about $9,463 at 4% or $6,308 at 6%.
200913$222,201$8,688$2,896iApproximate average salary by contribution assumption: employee only about $72,400 at 4% or $48,267 at 6%; with 50% employer match about $48,267 at 4% or $32,178 at 6%; with 100% employer match about $36,200 at 4% or $24,133 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$222,201$8,688$2,896iApproximate average salary by contribution assumption: employee only about $72,400 at 4% or $48,267 at 6%; with 50% employer match about $48,267 at 4% or $32,178 at 6%; with 100% employer match about $36,200 at 4% or $24,133 at 6%.
200813$166,461$208,989$69,663iApproximate average salary by contribution assumption: employee only about $1,741,575 at 4% or $1,161,050 at 6%; with 50% employer match about $1,161,050 at 4% or $774,033 at 6%; with 100% employer match about $870,788 at 4% or $580,525 at 6%.
HYDROSYSTEMS, INC. 401K PLAN-3$166,461$208,989$69,663iApproximate average salary by contribution assumption: employee only about $1,741,575 at 4% or $1,161,050 at 6%; with 50% employer match about $1,161,050 at 4% or $774,033 at 6%; with 100% employer match about $870,788 at 4% or $580,525 at 6%.