Mullen Sondberg Wimbish & Stone
Employee benefit plan audit practice profile, built from plan year 2024 Form 5500 filings.
Last updated · Source data: plan year 2024 Form 5500 filings
How many 401(k) plans does Mullen Sondberg Wimbish & Stone audit?
Mullen Sondberg Wimbish & Stone was the independent auditor for 37 retirement plan filings (39 audited filings including welfare plans) in plan year 2024, with clients in 3 states and territories — the #301 practice nationally by volume.
Practice at a glance
| Measure | Value |
|---|---|
| Firm EIN (as filed) | 52-1197902 |
| Retirement plan audits (401(k), 403(b), pension) | 37 |
| All audited filings (incl. welfare plans) | 39 |
| States and territories with clients | 3 |
| National rank by retirement plan volume | #301 of 3,956 |
| National rank, all audited filings (league-table basis) | #305 of 4,052 |
| Average client size (participants) | 385 |
| Largest client (participants) | 932 |
Rankings derived from U.S. Department of Labor Form 5500 filings, plan year 2024. Read the full methodology.
Where does Mullen Sondberg Wimbish & Stone audit plans?
| State | Plans audited | Share of practice |
|---|---|---|
| Maryland | 30 | 81.1% |
| Virginia | 5 | 13.5% |
| Washington, D.C. | 2 | 5.4% |
Largest concentration: Maryland (30 plans). State reflects the plan sponsor’s address, not the firm’s office locations.
What audit opinions does Mullen Sondberg Wimbish & Stone issue?
| Opinion type | Filings | Share |
|---|---|---|
| Unmodified (clean) | 37 | 100.0% |
| Qualified | 0 | 0.0% |
| Disclaimer | 0 | 0.0% |
| Adverse | 0 | 0.0% |
As coded on Schedule H. A disclaimer here usually reflects the legacy limited-scope reporting convention (now the ERISA Section 103(a)(3)(C) election), not a failed audit — see the methodology.
Largest plans audited by Mullen Sondberg Wimbish & Stone
| Plan sponsor | State | Participants |
|---|---|---|
| Family & Nursing Care, Inc. | MD | 932 |
| Community Support Services, Inc. | MD | 871 |
| Amyx, Inc. | VA | 835 |
| The Arc of Prince Georges County Inc. | MD | 715 |
| Edgewood Management Corporation D/B/A Pratum Companies | MD | 651 |
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About this profile
This page is generated from public U.S. Department of Labor Form 5500 filings in which Mullen Sondberg Wimbish & Stone (EIN 52-1197902) is named as the plan’s independent qualified public accountant. Mullen Sondberg Wimbish & Stone did not supply, review, or endorse this information, and inclusion is not a recommendation. Filing data can contain sponsor-entered errors; corrections are welcome via the about page.