Solar Mosaic LLC 401(k) Plan
What public Form 5500 filings show about the Solar Mosaic LLC 401(k) plan — and how to find and check your own account.
The Solar Mosaic LLC 401(k) on its latest Form 5500
Solar Mosaic LLC (EIN 61-1653655) reports SOLAR MOSAIC, LLC 401(K) PLAN on its most recent Form 5500, with $8.9M in plan assets across 3 active participants. Form 5500 is the annual report employers file with the U.S. Department of Labor for their retirement plans, and it’s public.
See the full Solar Mosaic LLC filing — schedules, fees, and providers.
Who runs the Solar Mosaic LLC 401(k)?
The plan’s recordkeeper — the firm that runs the website and statements where you check your balance, change contributions, and manage your account — is ADP, based on the plan’s Schedule C service-provider disclosure. That’s the login you use for your Solar Mosaic LLC 401(k).
Other service providers named on the filing (investment managers, trustees, auditors — not necessarily the recordkeeper): LAW OFFICE OF MATTHEW J BORROR, ADP BROKER-DEALER.
How to check your Solar Mosaic LLC 401(k)
- Log in to ADP’s participant portal (the site on your statements).
- Ask Solar Mosaic LLC HR or benefits for the recordkeeper name and enrollment link.
- Left the company? Your balance stays in the plan until you roll it over — see how to find a lost 401(k).

