Civic Intelligence

Prothena Biosciences Inc

Plan context: Prothena Biosciences Inc 401(K) Plan

EIN 46-1256213 • S. San Francisco, CA • 15 filings • 2 plans

331 Oyster Point Blvd.S. San Francisco, CA 94080
Current Snapshot

Latest Year

2024

2024 Participants

150

2024 Assets

$41,045,479

2024 Contributions

$5,651,692

Historical Graphs

Total Assets Over Time

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

$41,045,479$20,522,740$0201320192024YearValue
$41,045,479Latest year 2024

Participants Over Time

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

162810201320192024YearValue
150Latest year 2024

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
20242150$41,045,479$5,651,692$37,678iApproximate average salary by contribution assumption: employee only about $941,949 at 4% or $627,966 at 6%; with 50% employer match about $627,966 at 4% or $418,644 at 6%; with 100% employer match about $470,974 at 4% or $313,983 at 6%.
Prothena Biosciences Inc 401(K) Plan-150$41,045,479$5,651,692$37,678iApproximate average salary by contribution assumption: employee only about $941,949 at 4% or $627,966 at 6%; with 50% employer match about $627,966 at 4% or $418,644 at 6%; with 100% employer match about $470,974 at 4% or $313,983 at 6%.
Prothena Biosciences Inc Health and Welfare Plan-150---
20232162$33,959,958$6,217,418$38,379iApproximate average salary by contribution assumption: employee only about $959,478 at 4% or $639,652 at 6%; with 50% employer match about $639,652 at 4% or $426,435 at 6%; with 100% employer match about $479,739 at 4% or $319,826 at 6%.
Prothena Biosciences Inc 401(K) Plan-162$33,959,958$6,217,418$38,379iApproximate average salary by contribution assumption: employee only about $959,478 at 4% or $639,652 at 6%; with 50% employer match about $639,652 at 4% or $426,435 at 6%; with 100% employer match about $479,739 at 4% or $319,826 at 6%.
Prothena Biosciences Inc Health and Welfare Plan-160---
20221115$25,715,547$3,302,443$28,717iApproximate average salary by contribution assumption: employee only about $717,922 at 4% or $478,615 at 6%; with 50% employer match about $478,615 at 4% or $319,077 at 6%; with 100% employer match about $358,961 at 4% or $239,307 at 6%.
Prothena Biosciences Inc 401(K) Plan-115$25,715,547$3,302,443$28,717iApproximate average salary by contribution assumption: employee only about $717,922 at 4% or $478,615 at 6%; with 50% employer match about $478,615 at 4% or $319,077 at 6%; with 100% employer match about $358,961 at 4% or $239,307 at 6%.
2021177$28,570,570$2,405,654$31,242iApproximate average salary by contribution assumption: employee only about $781,056 at 4% or $520,704 at 6%; with 50% employer match about $520,704 at 4% or $347,136 at 6%; with 100% employer match about $390,528 at 4% or $260,352 at 6%.
Prothena Biosciences Inc 401(K) Plan-77$28,570,570$2,405,654$31,242iApproximate average salary by contribution assumption: employee only about $781,056 at 4% or $520,704 at 6%; with 50% employer match about $520,704 at 4% or $347,136 at 6%; with 100% employer match about $390,528 at 4% or $260,352 at 6%.
2020164$23,607,493$2,357,450$36,835iApproximate average salary by contribution assumption: employee only about $920,879 at 4% or $613,919 at 6%; with 50% employer match about $613,919 at 4% or $409,280 at 6%; with 100% employer match about $460,439 at 4% or $306,960 at 6%.
Prothena Biosciences Inc 401(K) Plan-64$23,607,493$2,357,450$36,835iApproximate average salary by contribution assumption: employee only about $920,879 at 4% or $613,919 at 6%; with 50% employer match about $613,919 at 4% or $409,280 at 6%; with 100% employer match about $460,439 at 4% or $306,960 at 6%.
2019150$19,195,148$1,884,803$37,696iApproximate average salary by contribution assumption: employee only about $942,401 at 4% or $628,268 at 6%; with 50% employer match about $628,268 at 4% or $418,845 at 6%; with 100% employer match about $471,201 at 4% or $314,134 at 6%.
Prothena Biosciences Inc 401(K) Plan-50$19,195,148$1,884,803$37,696iApproximate average salary by contribution assumption: employee only about $942,401 at 4% or $628,268 at 6%; with 50% employer match about $628,268 at 4% or $418,845 at 6%; with 100% employer match about $471,201 at 4% or $314,134 at 6%.
2018261$15,650,778$2,352,569$38,567iApproximate average salary by contribution assumption: employee only about $964,168 at 4% or $642,778 at 6%; with 50% employer match about $642,778 at 4% or $428,519 at 6%; with 100% employer match about $482,084 at 4% or $321,389 at 6%.
Prothena Biosciences Inc 401(K) Plan-57$15,650,778$2,352,569$41,273iApproximate average salary by contribution assumption: employee only about $1,031,829 at 4% or $687,886 at 6%; with 50% employer match about $687,886 at 4% or $458,590 at 6%; with 100% employer match about $515,914 at 4% or $343,943 at 6%.
Prothena Biosciences Inc Health and Welfare Plan-61---
20171103$16,308,474$1,896,285$18,411iApproximate average salary by contribution assumption: employee only about $460,263 at 4% or $306,842 at 6%; with 50% employer match about $306,842 at 4% or $204,561 at 6%; with 100% employer match about $230,132 at 4% or $153,421 at 6%.
Prothena Biosciences Inc 401(K) Plan-103$16,308,474$1,896,285$18,411iApproximate average salary by contribution assumption: employee only about $460,263 at 4% or $306,842 at 6%; with 50% employer match about $306,842 at 4% or $204,561 at 6%; with 100% employer match about $230,132 at 4% or $153,421 at 6%.
2016187$11,993,134$1,997,191$22,956iApproximate average salary by contribution assumption: employee only about $573,905 at 4% or $382,604 at 6%; with 50% employer match about $382,604 at 4% or $255,069 at 6%; with 100% employer match about $286,953 at 4% or $191,302 at 6%.
Prothena Biosciences Inc 401(K) Plan-87$11,993,134$1,997,191$22,956iApproximate average salary by contribution assumption: employee only about $573,905 at 4% or $382,604 at 6%; with 50% employer match about $382,604 at 4% or $255,069 at 6%; with 100% employer match about $286,953 at 4% or $191,302 at 6%.
2015165$10,110,259$2,199,158$33,833iApproximate average salary by contribution assumption: employee only about $845,830 at 4% or $563,887 at 6%; with 50% employer match about $563,887 at 4% or $375,924 at 6%; with 100% employer match about $422,915 at 4% or $281,943 at 6%.
Prothena Biosciences Inc 401(K) Plan-65$10,110,259$2,199,158$33,833iApproximate average salary by contribution assumption: employee only about $845,830 at 4% or $563,887 at 6%; with 50% employer match about $563,887 at 4% or $375,924 at 6%; with 100% employer match about $422,915 at 4% or $281,943 at 6%.
2014147$8,100,345$1,692,044$36,001iApproximate average salary by contribution assumption: employee only about $900,023 at 4% or $600,016 at 6%; with 50% employer match about $600,016 at 4% or $400,010 at 6%; with 100% employer match about $450,012 at 4% or $300,008 at 6%.
Prothena Biosciences Inc 401(K) Plan-47$8,100,345$1,692,044$36,001iApproximate average salary by contribution assumption: employee only about $900,023 at 4% or $600,016 at 6%; with 50% employer match about $600,016 at 4% or $400,010 at 6%; with 100% employer match about $450,012 at 4% or $300,008 at 6%.
2013140$6,050,546$1,008,669$25,217iApproximate average salary by contribution assumption: employee only about $630,418 at 4% or $420,279 at 6%; with 50% employer match about $420,279 at 4% or $280,186 at 6%; with 100% employer match about $315,209 at 4% or $210,139 at 6%.
Prothena Biosciences Inc 401(K) Plan-40$6,050,546$1,008,669$25,217iApproximate average salary by contribution assumption: employee only about $630,418 at 4% or $420,279 at 6%; with 50% employer match about $420,279 at 4% or $280,186 at 6%; with 100% employer match about $315,209 at 4% or $210,139 at 6%.