Carbon, Inc. 401(k) Plan: Login, Facts & Contact Information

Carbon, Inc. 401(k) Plan Facts

Plan name
CARBON, INC. 401(K) PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
CARBON, INC.
Participants
538 (291 active employees)
Former employees with a balance
198
Plan assets
$42,546,131 at Dec 31, 2024
Average account balance
$90,331 across 471 accounts
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 2015
✓ Employer contributions✓ Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments— Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 15, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $5.99 million went into the plan in contributions.
  • $4.84 million was paid out to participants.
  • Investment and other income added $5.90 million.
  • Administrative expenses were $35,453, about $75 per account.

How the Carbon, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019402$12.8 million—$574,952
2020492$18.7 million—$1.56 million
2021489$26.2 million$18,063$1.89 million
2022526$26.5 million$0$1.84 million
2023573$35.5 million$0$3.04 million
2024538$42.5 million$0$4.84 million

Carbon, Inc. 401(k) Contact Information

Phone
650-285-6307
Mailing address
1089 MILLS WAY, REDWOOD CITY CA 94063
Plan sponsor
CARBON, INC.
Employer identification number (EIN)
46-1897013
Plan number
001

Questions about the Carbon, Inc. 401(k)

Does Carbon, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement.

Does the Carbon, Inc 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the Carbon, Inc 401(k) plan?

538 participants at the start of plan year 2024, 291 of them active employees, and 198 former employees who still had money in the plan.

What is the average 401(k) balance at Carbon, Inc?

About $90,331 per account: $42.5 million in plan assets across 471 accounts with a balance at the end of plan year 2024.

Who manages the Carbon, Inc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Carbon, Inc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

Related Companies
Headquarter: 1575 ALLOUEZ AVE., GREEN BAY, WI, 54311
Headquarter: 902 W. CHERRY LANE, CARLSBAD, NM, 88220
Headquarter: 1 RIVERSIDE PLAZA, COLUMBUS, OH, 43215
Headquarter: 900 METRO CENTER BLVD., FOSTER CITY, CA, 94404
Headquarter: 1111 PASQUINELLI DRIVE, WESTMONT, IL, 60559