Civic Intelligence

Joseph S. Nierenberg, a Professional Corporation

Plan context: Joseph S. Nierenberg, a Professional Corporation Retirement Trust

EIN 20-2034497 • Oakland, CA • 25 filings • 2 plans

1999 Harrison Street, Ste 1800Oakland, CA 94612-3522
Current Snapshot

Latest Year

2025

2025 Participants

2

2025 Assets

$2,340,234

2025 Contributions

$279,826

Historical Graphs

Total Assets Over Time

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

$2,340,234$1,170,117$0200520152025YearValue
$2,340,234Latest year 2025

Participants Over Time

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

320200520152025YearValue
2Latest 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
202522$2,340,234$279,826$139,913iApproximate average salary by contribution assumption: employee only about $3,497,825 at 4% or $2,331,883 at 6%; with 50% employer match about $2,331,883 at 4% or $1,554,589 at 6%; with 100% employer match about $1,748,913 at 4% or $1,165,942 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,630,176$54,826$27,413iApproximate average salary by contribution assumption: employee only about $685,325 at 4% or $456,883 at 6%; with 50% employer match about $456,883 at 4% or $304,589 at 6%; with 100% employer match about $342,663 at 4% or $228,442 at 6%.
JOSEPH S. NIERENBERG, A PROFESSIONAL CORPORATION RETIREMENT TRUST-2$710,058$225,000$112,500iApproximate average salary by contribution assumption: employee only about $2,812,500 at 4% or $1,875,000 at 6%; with 50% employer match about $1,875,000 at 4% or $1,250,000 at 6%; with 100% employer match about $1,406,250 at 4% or $937,500 at 6%.
202422$1,978,014$87,570$43,785iApproximate average salary by contribution assumption: employee only about $1,094,625 at 4% or $729,750 at 6%; with 50% employer match about $729,750 at 4% or $486,500 at 6%; with 100% employer match about $547,313 at 4% or $364,875 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,518,113$32,570$16,285iApproximate average salary by contribution assumption: employee only about $407,125 at 4% or $271,417 at 6%; with 50% employer match about $271,417 at 4% or $180,944 at 6%; with 100% employer match about $203,563 at 4% or $135,708 at 6%.
JOSEPH S. NIERENBERG, A PROFESSIONAL CORPORATION RETIREMENT TRUST-2$459,901$55,000$27,500iApproximate average salary by contribution assumption: employee only about $687,500 at 4% or $458,333 at 6%; with 50% employer match about $458,333 at 4% or $305,556 at 6%; with 100% employer match about $343,750 at 4% or $229,167 at 6%.
202322$1,815,209$1,099$550iApproximate average salary by contribution assumption: employee only about $13,738 at 4% or $9,158 at 6%; with 50% employer match about $9,158 at 4% or $6,106 at 6%; with 100% employer match about $6,869 at 4% or $4,579 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,430,841$1,099$550iApproximate average salary by contribution assumption: employee only about $13,738 at 4% or $9,158 at 6%; with 50% employer match about $9,158 at 4% or $6,106 at 6%; with 100% employer match about $6,869 at 4% or $4,579 at 6%.
JOSEPH S. NIERENBERG, A PROFESSIONAL CORPORATION RETIREMENT TRUST-2$384,368$0-
202222$1,679,255$425,961$212,981iApproximate average salary by contribution assumption: employee only about $5,324,513 at 4% or $3,549,675 at 6%; with 50% employer match about $3,549,675 at 4% or $2,366,450 at 6%; with 100% employer match about $2,662,256 at 4% or $1,774,838 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,309,129$52,399$26,200iApproximate average salary by contribution assumption: employee only about $654,988 at 4% or $436,658 at 6%; with 50% employer match about $436,658 at 4% or $291,106 at 6%; with 100% employer match about $327,494 at 4% or $218,329 at 6%.
JOSEPH S. NIERENBERG, A PROFESSIONAL CORPORATION RETIREMENT TRUST-2$370,126$373,562$186,781iApproximate average salary by contribution assumption: employee only about $4,669,525 at 4% or $3,113,017 at 6%; with 50% employer match about $3,113,017 at 4% or $2,075,344 at 6%; with 100% employer match about $2,334,763 at 4% or $1,556,508 at 6%.
202112$1,368,240$41,000$20,500iApproximate average salary by contribution assumption: employee only about $512,500 at 4% or $341,667 at 6%; with 50% employer match about $341,667 at 4% or $227,778 at 6%; with 100% employer match about $256,250 at 4% or $170,833 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,368,240$41,000$20,500iApproximate average salary by contribution assumption: employee only about $512,500 at 4% or $341,667 at 6%; with 50% employer match about $341,667 at 4% or $227,778 at 6%; with 100% employer match about $256,250 at 4% or $170,833 at 6%.
202012$1,259,401$41,296$20,648iApproximate average salary by contribution assumption: employee only about $516,200 at 4% or $344,133 at 6%; with 50% employer match about $344,133 at 4% or $229,422 at 6%; with 100% employer match about $258,100 at 4% or $172,067 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,259,401$41,296$20,648iApproximate average salary by contribution assumption: employee only about $516,200 at 4% or $344,133 at 6%; with 50% employer match about $344,133 at 4% or $229,422 at 6%; with 100% employer match about $258,100 at 4% or $172,067 at 6%.
201912$1,155,724$64,117$32,059iApproximate average salary by contribution assumption: employee only about $801,463 at 4% or $534,308 at 6%; with 50% employer match about $534,308 at 4% or $356,206 at 6%; with 100% employer match about $400,731 at 4% or $267,154 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,155,724$64,117$32,059iApproximate average salary by contribution assumption: employee only about $801,463 at 4% or $534,308 at 6%; with 50% employer match about $534,308 at 4% or $356,206 at 6%; with 100% employer match about $400,731 at 4% or $267,154 at 6%.
201812$1,024,035$64,117$32,059iApproximate average salary by contribution assumption: employee only about $801,463 at 4% or $534,308 at 6%; with 50% employer match about $534,308 at 4% or $356,206 at 6%; with 100% employer match about $400,731 at 4% or $267,154 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$1,024,035$64,117$32,059iApproximate average salary by contribution assumption: employee only about $801,463 at 4% or $534,308 at 6%; with 50% employer match about $534,308 at 4% or $356,206 at 6%; with 100% employer match about $400,731 at 4% or $267,154 at 6%.
201712$969,211$23,700$11,850iApproximate average salary by contribution assumption: employee only about $296,250 at 4% or $197,500 at 6%; with 50% employer match about $197,500 at 4% or $131,667 at 6%; with 100% employer match about $148,125 at 4% or $98,750 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$969,211$23,700$11,850iApproximate average salary by contribution assumption: employee only about $296,250 at 4% or $197,500 at 6%; with 50% employer match about $197,500 at 4% or $131,667 at 6%; with 100% employer match about $148,125 at 4% or $98,750 at 6%.
201612$895,928$56,000$28,000iApproximate average salary by contribution assumption: employee only about $700,000 at 4% or $466,667 at 6%; with 50% employer match about $466,667 at 4% or $311,111 at 6%; with 100% employer match about $350,000 at 4% or $233,333 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$895,928$56,000$28,000iApproximate average salary by contribution assumption: employee only about $700,000 at 4% or $466,667 at 6%; with 50% employer match about $466,667 at 4% or $311,111 at 6%; with 100% employer match about $350,000 at 4% or $233,333 at 6%.
201512$762,769$62,000$31,000iApproximate average salary by contribution assumption: employee only about $775,000 at 4% or $516,667 at 6%; with 50% employer match about $516,667 at 4% or $344,444 at 6%; with 100% employer match about $387,500 at 4% or $258,333 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$762,769$62,000$31,000iApproximate average salary by contribution assumption: employee only about $775,000 at 4% or $516,667 at 6%; with 50% employer match about $516,667 at 4% or $344,444 at 6%; with 100% employer match about $387,500 at 4% or $258,333 at 6%.
201412$720,900$61,000$30,500iApproximate average salary by contribution assumption: employee only about $762,500 at 4% or $508,333 at 6%; with 50% employer match about $508,333 at 4% or $338,889 at 6%; with 100% employer match about $381,250 at 4% or $254,167 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$720,900$61,000$30,500iApproximate average salary by contribution assumption: employee only about $762,500 at 4% or $508,333 at 6%; with 50% employer match about $508,333 at 4% or $338,889 at 6%; with 100% employer match about $381,250 at 4% or $254,167 at 6%.
201312$619,998$61,000$30,500iApproximate average salary by contribution assumption: employee only about $762,500 at 4% or $508,333 at 6%; with 50% employer match about $508,333 at 4% or $338,889 at 6%; with 100% employer match about $381,250 at 4% or $254,167 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$619,998$61,000$30,500iApproximate average salary by contribution assumption: employee only about $762,500 at 4% or $508,333 at 6%; with 50% employer match about $508,333 at 4% or $338,889 at 6%; with 100% employer match about $381,250 at 4% or $254,167 at 6%.
201212$517,928$60,500$30,250iApproximate average salary by contribution assumption: employee only about $756,250 at 4% or $504,167 at 6%; with 50% employer match about $504,167 at 4% or $336,111 at 6%; with 100% employer match about $378,125 at 4% or $252,083 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$517,928$60,500$30,250iApproximate average salary by contribution assumption: employee only about $756,250 at 4% or $504,167 at 6%; with 50% employer match about $504,167 at 4% or $336,111 at 6%; with 100% employer match about $378,125 at 4% or $252,083 at 6%.
201112$386,800$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$386,800$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
201012$325,249$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$325,249$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
200912$266,029$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$266,029$60,000$30,000iApproximate average salary by contribution assumption: employee only about $750,000 at 4% or $500,000 at 6%; with 50% employer match about $500,000 at 4% or $333,333 at 6%; with 100% employer match about $375,000 at 4% or $250,000 at 6%.
200812$199,327$61,668$30,834iApproximate average salary by contribution assumption: employee only about $770,850 at 4% or $513,900 at 6%; with 50% employer match about $513,900 at 4% or $342,600 at 6%; with 100% employer match about $385,425 at 4% or $256,950 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-2$199,327$61,668$30,834iApproximate average salary by contribution assumption: employee only about $770,850 at 4% or $513,900 at 6%; with 50% employer match about $513,900 at 4% or $342,600 at 6%; with 100% employer match about $385,425 at 4% or $256,950 at 6%.
200713$187,772$61,161$20,387iApproximate average salary by contribution assumption: employee only about $509,675 at 4% or $339,783 at 6%; with 50% employer match about $339,783 at 4% or $226,522 at 6%; with 100% employer match about $254,838 at 4% or $169,892 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-3$187,772$61,161$20,387iApproximate average salary by contribution assumption: employee only about $509,675 at 4% or $339,783 at 6%; with 50% employer match about $339,783 at 4% or $226,522 at 6%; with 100% employer match about $254,838 at 4% or $169,892 at 6%.
200613$119,196$52,000$17,333iApproximate average salary by contribution assumption: employee only about $433,333 at 4% or $288,889 at 6%; with 50% employer match about $288,889 at 4% or $192,593 at 6%; with 100% employer match about $216,667 at 4% or $144,444 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-3$119,196$52,000$17,333iApproximate average salary by contribution assumption: employee only about $433,333 at 4% or $288,889 at 6%; with 50% employer match about $288,889 at 4% or $192,593 at 6%; with 100% employer match about $216,667 at 4% or $144,444 at 6%.
200513$57,227$52,710$17,570iApproximate average salary by contribution assumption: employee only about $439,250 at 4% or $292,833 at 6%; with 50% employer match about $292,833 at 4% or $195,222 at 6%; with 100% employer match about $219,625 at 4% or $146,417 at 6%.
Joseph S. Nierenberg, a Professional Corporation Retirement Trust-3$57,227$52,710$17,570iApproximate average salary by contribution assumption: employee only about $439,250 at 4% or $292,833 at 6%; with 50% employer match about $292,833 at 4% or $195,222 at 6%; with 100% employer match about $219,625 at 4% or $146,417 at 6%.