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

Rock Holdings, Inc. 401(k) Plan Facts

Plan name
ROCK HOLDINGS & ASSOCIATED COMPANIES SAVINGS PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
ROCK HOLDINGS, INC.
Participants
22,852 (15,943 active employees)
Former employees with a balance
6,739
Plan assets
$2,227,575,094 at Dec 31, 2024
Average account balance
$103,623 across 21,497 accounts
Employer contributions
$26,362,802 in plan year 2024 (15% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Aug 1, 2002
✓ 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 13, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $177.3 million went into the plan in contributions, $26.4 million of it from the employer (15%).
  • $176.5 million was paid out to participants.
  • Investment and other income added $302.5 million.
  • Administrative expenses were $1.35 million, about $63 per account.

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

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
201919,496$1.12 billion$34.0 million$64.3 million
202021,659$1.52 billion$46.7 million$90.5 million
202132,336$1.97 billion$49.5 million$118.8 million
202231,932$1.64 billion$42.9 million$211.9 million
202326,746$1.93 billion$28.6 million$212.2 million
202422,852$2.23 billion$26.4 million$176.5 million

Rock Holdings, Inc. 401(k) Contact Information

Phone
313-373-5329
Mailing address
1050 WOODWARD AVENUE, DETROIT MI 48226
Plan sponsor
ROCK HOLDINGS, INC.
Employer identification number (EIN)
51-0415135
Plan number
005

Questions about the Rock Holdings, Inc. 401(k)

Does Rock Holdings, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $26.4 million, 15% of all contributions.

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

Yes. The plan reports automatic enrollment of eligible employees.

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

22,852 participants at the start of plan year 2024, 15,943 of them active employees, and 6,739 former employees who still had money in the plan.

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

About $103,623 per account: $2.23 billion in plan assets across 21,497 accounts with a balance at the end of plan year 2024.

Who manages the Rock Holdings, 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 Rock Holdings, 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.

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