401(k) · DOL Form 5500 · 2024

Mediamosaic, Inc. Dba the Mosaic Company 401(k) Plan

Data updated 2026-08-25

$23M
Total assets Small plan by assets: 116
Participants Small participant base: 73rd
Percentile by assets National rank: $194,783
Avg per participant Above avg balance/head

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Official DOL plan name: Mosaic 401(k) Plan · Sponsored by Mediamosaic, Inc. Dba the Mosaic Company · Washington · Professional & Technical Services

$23M in assets, 116 participants

Mediamosaic, Inc. Dba the Mosaic Company's Mosaic 401(k) Plan reported $23M in total assets and 116 participants in its 2024 DOL Form 5500 filing, ranking in the 73rd percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

#14,539 in Professional & Technical Services (20,173 peers)

Coverage in Washington

Mosaic 401(k) Plan covers 116 participants in Washington, about 8% of the average Washington filer (state average ~1,476 per filing). Assets: $23M.

#14,539
in Professional & Technical Services (20,173 peers): +15.8%
assets growth YoY

Mosaic 401(k) Plan's outsized position by total assets

Mosaic 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$22,594,830 Top 27% higher than 73% of 123,620 filed plans

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Mosaic 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mosaic 401(k) Plan sits mid-pack in the medium band (116 participants).

Micro (1-10) 33,766 filings (27%) Small (11-100) 26,107 filings (21%) Medium (101-1,000) 54,251 filings (43%) Large (1,001-10,000) 10,349 filings (8%) Mega (10,000+) 1,399 filings (1%)

Mosaic 401(k) Plan reported net income rose from $1M in the plan year 2023 filing to $3M in the plan year 2024 filing.
Mosaic 401(k) Plan end-of-year assets rose from $20M in the plan year 2023 filing to $23M in the plan year 2024 filing.
Mosaic 401(k) Plan reported participants fell from 127 in the plan year 2023 filing to 116 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 911734522 · Mediamosaic, Inc. Dba the Mosaic Company PY 2024 · 401(k)

Mosaic 401(k) Plan · $23M · 116 · 73rd

EOY $23M
5500 116
ASSETS 73rd
PCT 401(k)
EIN near C.S.B. Co. 401(k) Plan
RANK ind #14539

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Washington →

End-of-year total assets ($M) among Mosaic 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Washington filing particulars

Total Assets (Beginning of Year)	$20M
Net Assets (End of Year)	$23M
Net Income	$3M
Employer EIN	911734522
Plan Effective Date	2003-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Mediamosaic, Inc. Dba the Mosaic Company)

Latest sponsor-wide plan assets: $39M 15.811828374314043% vs 2022; 2024 filing year

Year	Plans	Participants	Total Assets
2022	2	376	$34M
2023	2	256	$32M
2024	2	229	$39M

Nearby 401(k) Plans in Washington

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Mosaic 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants

The Boeing Company 401(k) Retirement Plan $73.9B · 139,394
Microsoft Corporation Savings Plus 401(k) Plan $65.6B · 118,818
Costco 401(k) Retirement Plan $41.0B · 202,468
Amazon 401(k) Plan $34.6B · 1,209,303
401(k) Savings Plan $10.1B · 86,668

Compare Mosaic 401(k) Plan side-by-side with 3 peers →

Mosaic 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Washington, the nearest 401(k) by assets is C.S.B. Co. 401(k) Plan in NE ($23M); by covered participants it is Steelseries 401(k) Plan in IL (116 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($23M here).

C.S.B. Co. 401(k) Plan (NE) $23M · 91
Expressway Dodge, Inc. 401(k) Plan (IN) $23M · 218
Vitalsmarts 401(k) Plan (UT) $23M · 184
Kitson & Partners Management Services, Inc. 401(k) Plan (FL) $23M · 196

Similar participant headcount

Nearest other-state filings by covered participants (116 participants); asset peers above are excluded.

Steelseries 401(k) Plan (IL) 116 · 0 off
Southern Urology, LLC 401(k) Plan and Trust (LA) 116 · 0 off
Critical Systems, Inc. 401(k) Plan (MA) 116 · 0 off
Elk Operating Services, LLC 401(k) Profit Sharing Plan (CO) 116 · 0 off

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Mosaic 401(k) Plan assets move in 2024? ▼

Mosaic 401(k) Plan grew sharply - up 15.8% during 2024, from $20M to $23M. Reported net income was $3M.

How have Mediamosaic, Inc. Dba the Mosaic Company plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Mediamosaic, Inc. Dba the Mosaic Company's sponsor-wide assets grew 15.8%, from $34M to $39M.

Which 401(k) plans are similar in size to Mosaic 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is C.S.B. Co. 401(k) Plan in NE ($23M, 91 participants).

Which 401(k) plans cover a similar participant headcount to Mosaic 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by covered participants is Steelseries 401(k) Plan in IL (116 participants, N/A in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 911734522.