Civic Intelligence

W.B. Olson Inc.

Plan context: W. B. Olson Inc. 401(K) Retirement Plan

EIN 36-2690498 • Northbrook, IL • 37 filings • 4 plans

3235 Arnold LaneNorthbrook, IL 60062
Current Snapshot

Latest Year

2025

2025 Participants

31

2025 Assets

$15,535,433

2025 Contributions

$517,483

Historical Graphs

Total Assets Over Time

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

$25,937,202$12,968,601$0200020132025YearValue
$15,535,433Latest year 2025

Participants Over Time

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

42210200020132025YearValue
31Latest 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
2025131$15,535,433$517,483$16,693iApproximate average salary by contribution assumption: employee only about $417,325 at 4% or $278,217 at 6%; with 50% employer match about $278,217 at 4% or $185,478 at 6%; with 100% employer match about $208,663 at 4% or $139,108 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-31$15,535,433$517,483$16,693iApproximate average salary by contribution assumption: employee only about $417,325 at 4% or $278,217 at 6%; with 50% employer match about $278,217 at 4% or $185,478 at 6%; with 100% employer match about $208,663 at 4% or $139,108 at 6%.
2024131$14,656,645$414,214$13,362iApproximate average salary by contribution assumption: employee only about $334,044 at 4% or $222,696 at 6%; with 50% employer match about $222,696 at 4% or $148,464 at 6%; with 100% employer match about $167,022 at 4% or $111,348 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-31$14,656,645$414,214$13,362iApproximate average salary by contribution assumption: employee only about $334,044 at 4% or $222,696 at 6%; with 50% employer match about $222,696 at 4% or $148,464 at 6%; with 100% employer match about $167,022 at 4% or $111,348 at 6%.
2023130$14,512,864$505,579$16,853iApproximate average salary by contribution assumption: employee only about $421,316 at 4% or $280,877 at 6%; with 50% employer match about $280,877 at 4% or $187,251 at 6%; with 100% employer match about $210,658 at 4% or $140,439 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-30$14,512,864$505,579$16,853iApproximate average salary by contribution assumption: employee only about $421,316 at 4% or $280,877 at 6%; with 50% employer match about $280,877 at 4% or $187,251 at 6%; with 100% employer match about $210,658 at 4% or $140,439 at 6%.
2022133$13,123,604$408,542$12,380iApproximate average salary by contribution assumption: employee only about $309,502 at 4% or $206,334 at 6%; with 50% employer match about $206,334 at 4% or $137,556 at 6%; with 100% employer match about $154,751 at 4% or $103,167 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-33$13,123,604$408,542$12,380iApproximate average salary by contribution assumption: employee only about $309,502 at 4% or $206,334 at 6%; with 50% employer match about $206,334 at 4% or $137,556 at 6%; with 100% employer match about $154,751 at 4% or $103,167 at 6%.
2021134$25,937,202$384,785$11,317iApproximate average salary by contribution assumption: employee only about $282,930 at 4% or $188,620 at 6%; with 50% employer match about $188,620 at 4% or $125,747 at 6%; with 100% employer match about $141,465 at 4% or $94,310 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-34$25,937,202$384,785$11,317iApproximate average salary by contribution assumption: employee only about $282,930 at 4% or $188,620 at 6%; with 50% employer match about $188,620 at 4% or $125,747 at 6%; with 100% employer match about $141,465 at 4% or $94,310 at 6%.
2020134$22,883,926$438,526$12,898iApproximate average salary by contribution assumption: employee only about $322,446 at 4% or $214,964 at 6%; with 50% employer match about $214,964 at 4% or $143,309 at 6%; with 100% employer match about $161,223 at 4% or $107,482 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-34$22,883,926$438,526$12,898iApproximate average salary by contribution assumption: employee only about $322,446 at 4% or $214,964 at 6%; with 50% employer match about $214,964 at 4% or $143,309 at 6%; with 100% employer match about $161,223 at 4% or $107,482 at 6%.
2019134$20,649,134$441,545$12,987iApproximate average salary by contribution assumption: employee only about $324,665 at 4% or $216,444 at 6%; with 50% employer match about $216,444 at 4% or $144,296 at 6%; with 100% employer match about $162,333 at 4% or $108,222 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-34$20,649,134$441,545$12,987iApproximate average salary by contribution assumption: employee only about $324,665 at 4% or $216,444 at 6%; with 50% employer match about $216,444 at 4% or $144,296 at 6%; with 100% employer match about $162,333 at 4% or $108,222 at 6%.
2018135$16,551,551$416,512$11,900iApproximate average salary by contribution assumption: employee only about $297,509 at 4% or $198,339 at 6%; with 50% employer match about $198,339 at 4% or $132,226 at 6%; with 100% employer match about $148,754 at 4% or $99,170 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-35$16,551,551$416,512$11,900iApproximate average salary by contribution assumption: employee only about $297,509 at 4% or $198,339 at 6%; with 50% employer match about $198,339 at 4% or $132,226 at 6%; with 100% employer match about $148,754 at 4% or $99,170 at 6%.
2017134$17,571,192$336,608$9,900iApproximate average salary by contribution assumption: employee only about $247,506 at 4% or $165,004 at 6%; with 50% employer match about $165,004 at 4% or $110,003 at 6%; with 100% employer match about $123,753 at 4% or $82,502 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-34$17,571,192$336,608$9,900iApproximate average salary by contribution assumption: employee only about $247,506 at 4% or $165,004 at 6%; with 50% employer match about $165,004 at 4% or $110,003 at 6%; with 100% employer match about $123,753 at 4% or $82,502 at 6%.
2016130$13,969,779$329,378$10,979iApproximate average salary by contribution assumption: employee only about $274,482 at 4% or $182,988 at 6%; with 50% employer match about $182,988 at 4% or $121,992 at 6%; with 100% employer match about $137,241 at 4% or $91,494 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-30$13,969,779$329,378$10,979iApproximate average salary by contribution assumption: employee only about $274,482 at 4% or $182,988 at 6%; with 50% employer match about $182,988 at 4% or $121,992 at 6%; with 100% employer match about $137,241 at 4% or $91,494 at 6%.
2015131$13,049,074$310,184$10,006iApproximate average salary by contribution assumption: employee only about $250,148 at 4% or $166,766 at 6%; with 50% employer match about $166,766 at 4% or $111,177 at 6%; with 100% employer match about $125,074 at 4% or $83,383 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-31$13,049,074$310,184$10,006iApproximate average salary by contribution assumption: employee only about $250,148 at 4% or $166,766 at 6%; with 50% employer match about $166,766 at 4% or $111,177 at 6%; with 100% employer match about $125,074 at 4% or $83,383 at 6%.
2014131$12,924,490$291,792$9,413iApproximate average salary by contribution assumption: employee only about $235,316 at 4% or $156,877 at 6%; with 50% employer match about $156,877 at 4% or $104,585 at 6%; with 100% employer match about $117,658 at 4% or $78,439 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-31$12,924,490$291,792$9,413iApproximate average salary by contribution assumption: employee only about $235,316 at 4% or $156,877 at 6%; with 50% employer match about $156,877 at 4% or $104,585 at 6%; with 100% employer match about $117,658 at 4% or $78,439 at 6%.
2013132$11,583,011$275,106$8,597iApproximate average salary by contribution assumption: employee only about $214,927 at 4% or $143,284 at 6%; with 50% employer match about $143,284 at 4% or $95,523 at 6%; with 100% employer match about $107,463 at 4% or $71,642 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-32$11,583,011$275,106$8,597iApproximate average salary by contribution assumption: employee only about $214,927 at 4% or $143,284 at 6%; with 50% employer match about $143,284 at 4% or $95,523 at 6%; with 100% employer match about $107,463 at 4% or $71,642 at 6%.
2012133$9,183,310$279,119$8,458iApproximate average salary by contribution assumption: employee only about $211,454 at 4% or $140,969 at 6%; with 50% employer match about $140,969 at 4% or $93,979 at 6%; with 100% employer match about $105,727 at 4% or $70,485 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-33$9,183,310$279,119$8,458iApproximate average salary by contribution assumption: employee only about $211,454 at 4% or $140,969 at 6%; with 50% employer match about $140,969 at 4% or $93,979 at 6%; with 100% employer match about $105,727 at 4% or $70,485 at 6%.
2011133$7,856,352$294,689$8,930iApproximate average salary by contribution assumption: employee only about $223,249 at 4% or $148,833 at 6%; with 50% employer match about $148,833 at 4% or $99,222 at 6%; with 100% employer match about $111,625 at 4% or $74,416 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-33$7,856,352$294,689$8,930iApproximate average salary by contribution assumption: employee only about $223,249 at 4% or $148,833 at 6%; with 50% employer match about $148,833 at 4% or $99,222 at 6%; with 100% employer match about $111,625 at 4% or $74,416 at 6%.
2010241$7,655,862$432,503$10,549iApproximate average salary by contribution assumption: employee only about $263,721 at 4% or $175,814 at 6%; with 50% employer match about $175,814 at 4% or $117,209 at 6%; with 100% employer match about $131,861 at 4% or $87,907 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-41$7,655,862$275,695$6,724iApproximate average salary by contribution assumption: employee only about $168,107 at 4% or $112,071 at 6%; with 50% employer match about $112,071 at 4% or $74,714 at 6%; with 100% employer match about $84,053 at 4% or $56,036 at 6%.
W. B. Olson Inc. Pension Plan-0$0$156,808-
2009242$6,496,883$658,246$15,673iApproximate average salary by contribution assumption: employee only about $391,813 at 4% or $261,209 at 6%; with 50% employer match about $261,209 at 4% or $174,139 at 6%; with 100% employer match about $195,907 at 4% or $130,604 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-42$4,613,455$308,462$7,344iApproximate average salary by contribution assumption: employee only about $183,608 at 4% or $122,406 at 6%; with 50% employer match about $122,406 at 4% or $81,604 at 6%; with 100% employer match about $91,804 at 4% or $61,203 at 6%.
W. B. Olson Inc. Pension Plan-24$1,883,428$349,784$14,574iApproximate average salary by contribution assumption: employee only about $364,358 at 4% or $242,906 at 6%; with 50% employer match about $242,906 at 4% or $161,937 at 6%; with 100% employer match about $182,179 at 4% or $121,453 at 6%.
2008238$4,561,108$630,165$16,583iApproximate average salary by contribution assumption: employee only about $414,582 at 4% or $276,388 at 6%; with 50% employer match about $276,388 at 4% or $184,259 at 6%; with 100% employer match about $207,291 at 4% or $138,194 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-38$3,277,945$473,520$12,461iApproximate average salary by contribution assumption: employee only about $311,526 at 4% or $207,684 at 6%; with 50% employer match about $207,684 at 4% or $138,456 at 6%; with 100% employer match about $155,763 at 4% or $103,842 at 6%.
W. B. Olson Inc. Pension Plan-21$1,283,163$156,645$7,459iApproximate average salary by contribution assumption: employee only about $186,482 at 4% or $124,321 at 6%; with 50% employer match about $124,321 at 4% or $82,881 at 6%; with 100% employer match about $93,241 at 4% or $62,161 at 6%.
2007230$6,040,769$653,485$21,783iApproximate average salary by contribution assumption: employee only about $544,571 at 4% or $363,047 at 6%; with 50% employer match about $363,047 at 4% or $242,031 at 6%; with 100% employer match about $272,285 at 4% or $181,524 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-30$4,305,803$530,885$17,696iApproximate average salary by contribution assumption: employee only about $442,404 at 4% or $294,936 at 6%; with 50% employer match about $294,936 at 4% or $196,624 at 6%; with 100% employer match about $221,202 at 4% or $147,468 at 6%.
W. B. Olson Inc. Pension Plan-19$1,734,966$122,600$6,453iApproximate average salary by contribution assumption: employee only about $161,316 at 4% or $107,544 at 6%; with 50% employer match about $107,544 at 4% or $71,696 at 6%; with 100% employer match about $80,658 at 4% or $53,772 at 6%.
2006232$5,218,240$473,658$14,802iApproximate average salary by contribution assumption: employee only about $370,045 at 4% or $246,697 at 6%; with 50% employer match about $246,697 at 4% or $164,465 at 6%; with 100% employer match about $185,023 at 4% or $123,348 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-32$3,642,575$381,853$11,933iApproximate average salary by contribution assumption: employee only about $298,323 at 4% or $198,882 at 6%; with 50% employer match about $198,882 at 4% or $132,588 at 6%; with 100% employer match about $149,161 at 4% or $99,441 at 6%.
W. B. Olson Inc. Pension Plan-19$1,575,665$91,805$4,832iApproximate average salary by contribution assumption: employee only about $120,796 at 4% or $80,531 at 6%; with 50% employer match about $80,531 at 4% or $53,687 at 6%; with 100% employer match about $60,398 at 4% or $40,265 at 6%.
2005226$4,411,234$364,606$14,023iApproximate average salary by contribution assumption: employee only about $350,583 at 4% or $233,722 at 6%; with 50% employer match about $233,722 at 4% or $155,815 at 6%; with 100% employer match about $175,291 at 4% or $116,861 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-26$3,058,892$285,779$10,992iApproximate average salary by contribution assumption: employee only about $274,788 at 4% or $183,192 at 6%; with 50% employer match about $183,192 at 4% or $122,128 at 6%; with 100% employer match about $137,394 at 4% or $91,596 at 6%.
W. B. Olson Inc. Pension Plan-16$1,352,342$78,827$4,927iApproximate average salary by contribution assumption: employee only about $123,167 at 4% or $82,111 at 6%; with 50% employer match about $82,111 at 4% or $54,741 at 6%; with 100% employer match about $61,584 at 4% or $41,056 at 6%.
2004233$4,043,274$330,233$10,007iApproximate average salary by contribution assumption: employee only about $250,177 at 4% or $166,784 at 6%; with 50% employer match about $166,784 at 4% or $111,190 at 6%; with 100% employer match about $125,088 at 4% or $83,392 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-33$2,772,127$248,778$7,539iApproximate average salary by contribution assumption: employee only about $188,468 at 4% or $125,645 at 6%; with 50% employer match about $125,645 at 4% or $83,764 at 6%; with 100% employer match about $94,234 at 4% or $62,823 at 6%.
W. B. Olson Inc. Pension Plan-19$1,271,147$81,455$4,287iApproximate average salary by contribution assumption: employee only about $107,178 at 4% or $71,452 at 6%; with 50% employer match about $71,452 at 4% or $47,635 at 6%; with 100% employer match about $53,589 at 4% or $35,726 at 6%.
2003229$3,392,704$328,705$11,335iApproximate average salary by contribution assumption: employee only about $283,366 at 4% or $188,911 at 6%; with 50% employer match about $188,911 at 4% or $125,941 at 6%; with 100% employer match about $141,683 at 4% or $94,455 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-29$2,311,220$251,397$8,669iApproximate average salary by contribution assumption: employee only about $216,722 at 4% or $144,481 at 6%; with 50% employer match about $144,481 at 4% or $96,321 at 6%; with 100% employer match about $108,361 at 4% or $72,241 at 6%.
W. B. Olson Inc. Pension Plan-19$1,081,484$77,308$4,069iApproximate average salary by contribution assumption: employee only about $101,721 at 4% or $67,814 at 6%; with 50% employer match about $67,814 at 4% or $45,209 at 6%; with 100% employer match about $50,861 at 4% or $33,907 at 6%.
2002232$3,388,179$404,253$12,633iApproximate average salary by contribution assumption: employee only about $315,823 at 4% or $210,548 at 6%; with 50% employer match about $210,548 at 4% or $140,366 at 6%; with 100% employer match about $157,911 at 4% or $105,274 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-32$2,201,286$323,145$10,098iApproximate average salary by contribution assumption: employee only about $252,457 at 4% or $168,305 at 6%; with 50% employer match about $168,305 at 4% or $112,203 at 6%; with 100% employer match about $126,229 at 4% or $84,152 at 6%.
W. B. Olson Inc. Pension Plan-20$1,186,893$81,108$4,055iApproximate average salary by contribution assumption: employee only about $101,385 at 4% or $67,590 at 6%; with 50% employer match about $67,590 at 4% or $45,060 at 6%; with 100% employer match about $50,693 at 4% or $33,795 at 6%.
2001239$3,954,361$439,713$11,275iApproximate average salary by contribution assumption: employee only about $281,867 at 4% or $187,912 at 6%; with 50% employer match about $187,912 at 4% or $125,274 at 6%; with 100% employer match about $140,934 at 4% or $93,956 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-39$2,629,115$362,352$9,291iApproximate average salary by contribution assumption: employee only about $232,277 at 4% or $154,851 at 6%; with 50% employer match about $154,851 at 4% or $103,234 at 6%; with 100% employer match about $116,138 at 4% or $77,426 at 6%.
W. B. Olson Inc. Pension Plan-21$1,325,246$77,361$3,684iApproximate average salary by contribution assumption: employee only about $92,096 at 4% or $61,398 at 6%; with 50% employer match about $61,398 at 4% or $40,932 at 6%; with 100% employer match about $46,048 at 4% or $30,699 at 6%.
2000237$4,130,372$456,952$12,350iApproximate average salary by contribution assumption: employee only about $308,751 at 4% or $205,834 at 6%; with 50% employer match about $205,834 at 4% or $137,223 at 6%; with 100% employer match about $154,376 at 4% or $102,917 at 6%.
W. B. Olson Inc. 401(K) Retirement Plan-37$2,698,391$392,024$10,595iApproximate average salary by contribution assumption: employee only about $264,881 at 4% or $176,587 at 6%; with 50% employer match about $176,587 at 4% or $117,725 at 6%; with 100% employer match about $132,441 at 4% or $88,294 at 6%.
W. B. Olson Inc. Pension Plan-19$1,431,981$64,928$3,417iApproximate average salary by contribution assumption: employee only about $85,432 at 4% or $56,954 at 6%; with 50% employer match about $56,954 at 4% or $37,970 at 6%; with 100% employer match about $42,716 at 4% or $28,477 at 6%.