Civic Intelligence

Midwest Subsurface Testing, L.L.C.

Plan context: Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan

EIN 02-0536635 • St. Louis, MO • 17 filings • 3 plans

8606 Page AvenueSt. Louis, MO 63114
Current Snapshot

Latest Year

2025

2025 Participants

14

2025 Assets

$3,372,834

2025 Contributions

$123,196

Historical Graphs

Total Assets Over Time

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

$4,353,640$2,176,820$0201020182025YearValue
$3,372,834Latest year 2025

Participants Over Time

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

20100201020182025YearValue
14Latest 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
2025114$3,372,834$123,196$8,800iApproximate average salary by contribution assumption: employee only about $219,993 at 4% or $146,662 at 6%; with 50% employer match about $146,662 at 4% or $97,775 at 6%; with 100% employer match about $109,996 at 4% or $73,331 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-14$3,372,834$123,196$8,800iApproximate average salary by contribution assumption: employee only about $219,993 at 4% or $146,662 at 6%; with 50% employer match about $146,662 at 4% or $97,775 at 6%; with 100% employer match about $109,996 at 4% or $73,331 at 6%.
2024119$4,353,640$124,355$6,545iApproximate average salary by contribution assumption: employee only about $163,625 at 4% or $109,083 at 6%; with 50% employer match about $109,083 at 4% or $72,722 at 6%; with 100% employer match about $81,813 at 4% or $54,542 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-19$4,353,640$124,355$6,545iApproximate average salary by contribution assumption: employee only about $163,625 at 4% or $109,083 at 6%; with 50% employer match about $109,083 at 4% or $72,722 at 6%; with 100% employer match about $81,813 at 4% or $54,542 at 6%.
2023117$3,714,985$128,649$7,568iApproximate average salary by contribution assumption: employee only about $189,190 at 4% or $126,126 at 6%; with 50% employer match about $126,126 at 4% or $84,084 at 6%; with 100% employer match about $94,595 at 4% or $63,063 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-17$3,714,985$128,649$7,568iApproximate average salary by contribution assumption: employee only about $189,190 at 4% or $126,126 at 6%; with 50% employer match about $126,126 at 4% or $84,084 at 6%; with 100% employer match about $94,595 at 4% or $63,063 at 6%.
2022120$3,114,152$223,050$11,153iApproximate average salary by contribution assumption: employee only about $278,813 at 4% or $185,875 at 6%; with 50% employer match about $185,875 at 4% or $123,917 at 6%; with 100% employer match about $139,406 at 4% or $92,938 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-20$3,114,152$223,050$11,153iApproximate average salary by contribution assumption: employee only about $278,813 at 4% or $185,875 at 6%; with 50% employer match about $185,875 at 4% or $123,917 at 6%; with 100% employer match about $139,406 at 4% or $92,938 at 6%.
2021117$3,606,484$102,408$6,024iApproximate average salary by contribution assumption: employee only about $150,600 at 4% or $100,400 at 6%; with 50% employer match about $100,400 at 4% or $66,933 at 6%; with 100% employer match about $75,300 at 4% or $50,200 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-17$3,606,484$102,408$6,024iApproximate average salary by contribution assumption: employee only about $150,600 at 4% or $100,400 at 6%; with 50% employer match about $100,400 at 4% or $66,933 at 6%; with 100% employer match about $75,300 at 4% or $50,200 at 6%.
2020116$3,025,274$95,922$5,995iApproximate average salary by contribution assumption: employee only about $149,878 at 4% or $99,919 at 6%; with 50% employer match about $99,919 at 4% or $66,613 at 6%; with 100% employer match about $74,939 at 4% or $49,959 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-16$3,025,274$95,922$5,995iApproximate average salary by contribution assumption: employee only about $149,878 at 4% or $99,919 at 6%; with 50% employer match about $99,919 at 4% or $66,613 at 6%; with 100% employer match about $74,939 at 4% or $49,959 at 6%.
2019117$2,956,277$101,129$5,949iApproximate average salary by contribution assumption: employee only about $148,719 at 4% or $99,146 at 6%; with 50% employer match about $99,146 at 4% or $66,097 at 6%; with 100% employer match about $74,360 at 4% or $49,573 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-17$2,956,277$101,129$5,949iApproximate average salary by contribution assumption: employee only about $148,719 at 4% or $99,146 at 6%; with 50% employer match about $99,146 at 4% or $66,097 at 6%; with 100% employer match about $74,360 at 4% or $49,573 at 6%.
2018117$2,249,916$101,328$5,960iApproximate average salary by contribution assumption: employee only about $149,012 at 4% or $99,341 at 6%; with 50% employer match about $99,341 at 4% or $66,227 at 6%; with 100% employer match about $74,506 at 4% or $49,671 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-17$2,249,916$101,328$5,960iApproximate average salary by contribution assumption: employee only about $149,012 at 4% or $99,341 at 6%; with 50% employer match about $99,341 at 4% or $66,227 at 6%; with 100% employer match about $74,506 at 4% or $49,671 at 6%.
2017118$2,446,917$97,849$5,436iApproximate average salary by contribution assumption: employee only about $135,901 at 4% or $90,601 at 6%; with 50% employer match about $90,601 at 4% or $60,401 at 6%; with 100% employer match about $67,951 at 4% or $45,300 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-18$2,446,917$97,849$5,436iApproximate average salary by contribution assumption: employee only about $135,901 at 4% or $90,601 at 6%; with 50% employer match about $90,601 at 4% or $60,401 at 6%; with 100% employer match about $67,951 at 4% or $45,300 at 6%.
2016114$2,002,217$61,507$4,393iApproximate average salary by contribution assumption: employee only about $109,834 at 4% or $73,223 at 6%; with 50% employer match about $73,223 at 4% or $48,815 at 6%; with 100% employer match about $54,917 at 4% or $36,611 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-14$2,002,217$61,507$4,393iApproximate average salary by contribution assumption: employee only about $109,834 at 4% or $73,223 at 6%; with 50% employer match about $73,223 at 4% or $48,815 at 6%; with 100% employer match about $54,917 at 4% or $36,611 at 6%.
2015112$1,766,141$56,016$4,668iApproximate average salary by contribution assumption: employee only about $116,700 at 4% or $77,800 at 6%; with 50% employer match about $77,800 at 4% or $51,867 at 6%; with 100% employer match about $58,350 at 4% or $38,900 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-12$1,766,141$56,016$4,668iApproximate average salary by contribution assumption: employee only about $116,700 at 4% or $77,800 at 6%; with 50% employer match about $77,800 at 4% or $51,867 at 6%; with 100% employer match about $58,350 at 4% or $38,900 at 6%.
2014212$3,506,656$121,726$10,144iApproximate average salary by contribution assumption: employee only about $253,596 at 4% or $169,064 at 6%; with 50% employer match about $169,064 at 4% or $112,709 at 6%; with 100% employer match about $126,798 at 4% or $84,532 at 6%.
MIDWEST SUBSURFACE TESTING, L.L.C. 401(K) PROFIT SHARING PLAN-12$1,753,328$60,863$5,072iApproximate average salary by contribution assumption: employee only about $126,798 at 4% or $84,532 at 6%; with 50% employer match about $84,532 at 4% or $56,355 at 6%; with 100% employer match about $63,399 at 4% or $42,266 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-12$1,753,328$60,863$5,072iApproximate average salary by contribution assumption: employee only about $126,798 at 4% or $84,532 at 6%; with 50% employer match about $84,532 at 4% or $56,355 at 6%; with 100% employer match about $63,399 at 4% or $42,266 at 6%.
2013112$1,608,312$39,120$3,260iApproximate average salary by contribution assumption: employee only about $81,500 at 4% or $54,333 at 6%; with 50% employer match about $54,333 at 4% or $36,222 at 6%; with 100% employer match about $40,750 at 4% or $27,167 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-12$1,608,312$39,120$3,260iApproximate average salary by contribution assumption: employee only about $81,500 at 4% or $54,333 at 6%; with 50% employer match about $54,333 at 4% or $36,222 at 6%; with 100% employer match about $40,750 at 4% or $27,167 at 6%.
2012112$1,339,980$46,563$3,880iApproximate average salary by contribution assumption: employee only about $97,006 at 4% or $64,671 at 6%; with 50% employer match about $64,671 at 4% or $43,114 at 6%; with 100% employer match about $48,503 at 4% or $32,335 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-12$1,339,980$46,563$3,880iApproximate average salary by contribution assumption: employee only about $97,006 at 4% or $64,671 at 6%; with 50% employer match about $64,671 at 4% or $43,114 at 6%; with 100% employer match about $48,503 at 4% or $32,335 at 6%.
2011116$1,368,095$73,522$4,595iApproximate average salary by contribution assumption: employee only about $114,878 at 4% or $76,585 at 6%; with 50% employer match about $76,585 at 4% or $51,057 at 6%; with 100% employer match about $57,439 at 4% or $38,293 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-16$1,368,095$73,522$4,595iApproximate average salary by contribution assumption: employee only about $114,878 at 4% or $76,585 at 6%; with 50% employer match about $76,585 at 4% or $51,057 at 6%; with 100% employer match about $57,439 at 4% or $38,293 at 6%.
2010117$1,437,931$87,850$5,168iApproximate average salary by contribution assumption: employee only about $129,191 at 4% or $86,127 at 6%; with 50% employer match about $86,127 at 4% or $57,418 at 6%; with 100% employer match about $64,596 at 4% or $43,064 at 6%.
Midwest Subsurface Testing, L.L.C. 401(K) Profit Sharing Plan-17$1,437,931$87,850$5,168iApproximate average salary by contribution assumption: employee only about $129,191 at 4% or $86,127 at 6%; with 50% employer match about $86,127 at 4% or $57,418 at 6%; with 100% employer match about $64,596 at 4% or $43,064 at 6%.