Mainstream Fiber Networks 401(k) Plan

The Mainstream Fiber Networks 401(k) on its latest Form 5500

Mainstream Fiber Networks (EIN 20-2035890) reports MAINSTREAM 4010(K) PLAN on its most recent Form 5500, with $729K in plan assets across 50 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 Mainstream Fiber Networks filing — schedules, fees, and providers.

Who runs the Mainstream Fiber Networks 401(k)?

Mainstream Fiber Networks’s Form 5500 doesn’t separately disclose a recordkeeper we can confirm. The firms named on its Schedule C are service providers — which can include investment managers, trustees, and auditors, and are not necessarily the company that runs your account. To find who runs your 401(k), check your enrollment paperwork or a recent statement, or ask Mainstream Fiber NetworksHR for the recordkeeper’s name and login.

How to check your Mainstream Fiber Networks 401(k)

• Log in to the plan’s recordkeeper portal (the site on your statements).
• Ask Mainstream Fiber Networks 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).