Civic Intelligence

Siena Engineering Group Inc.

Plan context: Siena Engineering Group Inc. 401(K) Plan

EIN 20-8037947 • Burlington, MA • 19 filings • 2 plans

50 Mall Road, Suite 203Burlington, MA 01803
Current Snapshot

Latest Year

2025

2025 Participants

50

2025 Assets

$10,481,938

2025 Contributions

$691,491

Historical Graphs

Total Assets Over Time

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

$10,481,938$5,240,969$0200720162025YearValue
$10,481,938Latest year 2025

Participants Over Time

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

67340200720162025YearValue
50Latest 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
2025150$10,481,938$691,491$13,830iApproximate average salary by contribution assumption: employee only about $345,746 at 4% or $230,497 at 6%; with 50% employer match about $230,497 at 4% or $153,665 at 6%; with 100% employer match about $172,873 at 4% or $115,249 at 6%.
Siena Engineering Group Inc. 401(K) Plan-50$10,481,938$691,491$13,830iApproximate average salary by contribution assumption: employee only about $345,746 at 4% or $230,497 at 6%; with 50% employer match about $230,497 at 4% or $153,665 at 6%; with 100% employer match about $172,873 at 4% or $115,249 at 6%.
2024149$9,416,797$727,278$14,842iApproximate average salary by contribution assumption: employee only about $371,060 at 4% or $247,373 at 6%; with 50% employer match about $247,373 at 4% or $164,916 at 6%; with 100% employer match about $185,530 at 4% or $123,687 at 6%.
Siena Engineering Group Inc. 401(K) Plan-49$9,416,797$727,278$14,842iApproximate average salary by contribution assumption: employee only about $371,060 at 4% or $247,373 at 6%; with 50% employer match about $247,373 at 4% or $164,916 at 6%; with 100% employer match about $185,530 at 4% or $123,687 at 6%.
2023155$8,055,021$723,310$13,151iApproximate average salary by contribution assumption: employee only about $328,777 at 4% or $219,185 at 6%; with 50% employer match about $219,185 at 4% or $146,123 at 6%; with 100% employer match about $164,389 at 4% or $109,592 at 6%.
Siena Engineering Group Inc. 401(K) Plan-55$8,055,021$723,310$13,151iApproximate average salary by contribution assumption: employee only about $328,777 at 4% or $219,185 at 6%; with 50% employer match about $219,185 at 4% or $146,123 at 6%; with 100% employer match about $164,389 at 4% or $109,592 at 6%.
2022159$6,643,755$811,334$13,751iApproximate average salary by contribution assumption: employee only about $343,786 at 4% or $229,190 at 6%; with 50% employer match about $229,190 at 4% or $152,794 at 6%; with 100% employer match about $171,893 at 4% or $114,595 at 6%.
Siena Engineering Group Inc. 401(K) Plan-59$6,643,755$811,334$13,751iApproximate average salary by contribution assumption: employee only about $343,786 at 4% or $229,190 at 6%; with 50% employer match about $229,190 at 4% or $152,794 at 6%; with 100% employer match about $171,893 at 4% or $114,595 at 6%.
2021158$7,667,244$734,668$12,667iApproximate average salary by contribution assumption: employee only about $316,667 at 4% or $211,111 at 6%; with 50% employer match about $211,111 at 4% or $140,741 at 6%; with 100% employer match about $158,334 at 4% or $105,556 at 6%.
Siena Engineering Group Inc. 401(K) Plan-58$7,667,244$734,668$12,667iApproximate average salary by contribution assumption: employee only about $316,667 at 4% or $211,111 at 6%; with 50% employer match about $211,111 at 4% or $140,741 at 6%; with 100% employer match about $158,334 at 4% or $105,556 at 6%.
2020165$6,218,258$783,930$12,060iApproximate average salary by contribution assumption: employee only about $301,512 at 4% or $201,008 at 6%; with 50% employer match about $201,008 at 4% or $134,005 at 6%; with 100% employer match about $150,756 at 4% or $100,504 at 6%.
Siena Engineering Group Inc. 401(K) Plan-65$6,218,258$783,930$12,060iApproximate average salary by contribution assumption: employee only about $301,512 at 4% or $201,008 at 6%; with 50% employer match about $201,008 at 4% or $134,005 at 6%; with 100% employer match about $150,756 at 4% or $100,504 at 6%.
2019167$5,332,914$769,924$11,491iApproximate average salary by contribution assumption: employee only about $287,285 at 4% or $191,523 at 6%; with 50% employer match about $191,523 at 4% or $127,682 at 6%; with 100% employer match about $143,643 at 4% or $95,762 at 6%.
Siena Engineering Group Inc. 401(K) Plan-67$5,332,914$769,924$11,491iApproximate average salary by contribution assumption: employee only about $287,285 at 4% or $191,523 at 6%; with 50% employer match about $191,523 at 4% or $127,682 at 6%; with 100% employer match about $143,643 at 4% or $95,762 at 6%.
2018167$3,834,649$731,732$10,921iApproximate average salary by contribution assumption: employee only about $273,034 at 4% or $182,023 at 6%; with 50% employer match about $182,023 at 4% or $121,349 at 6%; with 100% employer match about $136,517 at 4% or $91,011 at 6%.
Siena Engineering Group Inc. 401(K) Plan-67$3,834,649$731,732$10,921iApproximate average salary by contribution assumption: employee only about $273,034 at 4% or $182,023 at 6%; with 50% employer match about $182,023 at 4% or $121,349 at 6%; with 100% employer match about $136,517 at 4% or $91,011 at 6%.
2017161$3,690,394$546,122$8,953iApproximate average salary by contribution assumption: employee only about $223,820 at 4% or $149,214 at 6%; with 50% employer match about $149,214 at 4% or $99,476 at 6%; with 100% employer match about $111,910 at 4% or $74,607 at 6%.
Siena Engineering Group Inc. 401(K) Plan-61$3,690,394$546,122$8,953iApproximate average salary by contribution assumption: employee only about $223,820 at 4% or $149,214 at 6%; with 50% employer match about $149,214 at 4% or $99,476 at 6%; with 100% employer match about $111,910 at 4% or $74,607 at 6%.
2016155$3,664,224$963,499$17,518iApproximate average salary by contribution assumption: employee only about $437,954 at 4% or $291,969 at 6%; with 50% employer match about $291,969 at 4% or $194,646 at 6%; with 100% employer match about $218,977 at 4% or $145,985 at 6%.
Siena Engineering Group Inc. 401(K) Plan-55$3,664,224$963,499$17,518iApproximate average salary by contribution assumption: employee only about $437,954 at 4% or $291,969 at 6%; with 50% employer match about $291,969 at 4% or $194,646 at 6%; with 100% employer match about $218,977 at 4% or $145,985 at 6%.
2015161$2,513,349$483,545$7,927iApproximate average salary by contribution assumption: employee only about $198,174 at 4% or $132,116 at 6%; with 50% employer match about $132,116 at 4% or $88,077 at 6%; with 100% employer match about $99,087 at 4% or $66,058 at 6%.
Siena Engineering Group Inc. 401(K) Plan-61$2,513,349$483,545$7,927iApproximate average salary by contribution assumption: employee only about $198,174 at 4% or $132,116 at 6%; with 50% employer match about $132,116 at 4% or $88,077 at 6%; with 100% employer match about $99,087 at 4% or $66,058 at 6%.
2014144$2,202,911$400,311$9,098iApproximate average salary by contribution assumption: employee only about $227,449 at 4% or $151,633 at 6%; with 50% employer match about $151,633 at 4% or $101,089 at 6%; with 100% employer match about $113,725 at 4% or $75,816 at 6%.
Siena Engineering Group Inc. 401(K) Plan-44$2,202,911$400,311$9,098iApproximate average salary by contribution assumption: employee only about $227,449 at 4% or $151,633 at 6%; with 50% employer match about $151,633 at 4% or $101,089 at 6%; with 100% employer match about $113,725 at 4% or $75,816 at 6%.
2013134$1,775,579$280,954$8,263iApproximate average salary by contribution assumption: employee only about $206,584 at 4% or $137,723 at 6%; with 50% employer match about $137,723 at 4% or $91,815 at 6%; with 100% employer match about $103,292 at 4% or $68,861 at 6%.
Siena Engineering Group Inc. 401(K) Plan-34$1,775,579$280,954$8,263iApproximate average salary by contribution assumption: employee only about $206,584 at 4% or $137,723 at 6%; with 50% employer match about $137,723 at 4% or $91,815 at 6%; with 100% employer match about $103,292 at 4% or $68,861 at 6%.
2012122$1,217,356$245,773$11,172iApproximate average salary by contribution assumption: employee only about $279,288 at 4% or $186,192 at 6%; with 50% employer match about $186,192 at 4% or $124,128 at 6%; with 100% employer match about $139,644 at 4% or $93,096 at 6%.
Siena Engineering Group Inc. 401(K) Plan-22$1,217,356$245,773$11,172iApproximate average salary by contribution assumption: employee only about $279,288 at 4% or $186,192 at 6%; with 50% employer match about $186,192 at 4% or $124,128 at 6%; with 100% employer match about $139,644 at 4% or $93,096 at 6%.
2011121$852,728$187,221$8,915iApproximate average salary by contribution assumption: employee only about $222,882 at 4% or $148,588 at 6%; with 50% employer match about $148,588 at 4% or $99,059 at 6%; with 100% employer match about $111,441 at 4% or $74,294 at 6%.
Siena Engineering Group Inc. 401(K) Plan-21$852,728$187,221$8,915iApproximate average salary by contribution assumption: employee only about $222,882 at 4% or $148,588 at 6%; with 50% employer match about $148,588 at 4% or $99,059 at 6%; with 100% employer match about $111,441 at 4% or $74,294 at 6%.
2010119$698,187$167,463$8,814iApproximate average salary by contribution assumption: employee only about $220,346 at 4% or $146,897 at 6%; with 50% employer match about $146,897 at 4% or $97,932 at 6%; with 100% employer match about $110,173 at 4% or $73,449 at 6%.
Siena Engineering Group Inc. 401(K) Plan-19$698,187$167,463$8,814iApproximate average salary by contribution assumption: employee only about $220,346 at 4% or $146,897 at 6%; with 50% employer match about $146,897 at 4% or $97,932 at 6%; with 100% employer match about $110,173 at 4% or $73,449 at 6%.
2009118$520,460$151,566$8,420iApproximate average salary by contribution assumption: employee only about $210,508 at 4% or $140,339 at 6%; with 50% employer match about $140,339 at 4% or $93,559 at 6%; with 100% employer match about $105,254 at 4% or $70,169 at 6%.
Siena Engineering Group Inc. 401(K) Plan-18$520,460$151,566$8,420iApproximate average salary by contribution assumption: employee only about $210,508 at 4% or $140,339 at 6%; with 50% employer match about $140,339 at 4% or $93,559 at 6%; with 100% employer match about $105,254 at 4% or $70,169 at 6%.
2008128$258,931$141,568$5,056iApproximate average salary by contribution assumption: employee only about $126,400 at 4% or $84,267 at 6%; with 50% employer match about $84,267 at 4% or $56,178 at 6%; with 100% employer match about $63,200 at 4% or $42,133 at 6%.
Siena Engineering Group Inc. 401(K) Plan-28$258,931$141,568$5,056iApproximate average salary by contribution assumption: employee only about $126,400 at 4% or $84,267 at 6%; with 50% employer match about $84,267 at 4% or $56,178 at 6%; with 100% employer match about $63,200 at 4% or $42,133 at 6%.
2007122$212,472$206,694$9,395iApproximate average salary by contribution assumption: employee only about $234,880 at 4% or $156,586 at 6%; with 50% employer match about $156,586 at 4% or $104,391 at 6%; with 100% employer match about $117,440 at 4% or $78,293 at 6%.
Siena Engineering Group Inc. 401(K) Plan-22$212,472$206,694$9,395iApproximate average salary by contribution assumption: employee only about $234,880 at 4% or $156,586 at 6%; with 50% employer match about $156,586 at 4% or $104,391 at 6%; with 100% employer match about $117,440 at 4% or $78,293 at 6%.