Dart Container of Michigan 401(k) plan

Dart Container of Michigan LLC, Mason, MI. EIN 06-1720526. Annual reports 2009–2025.

Dart Container of Michigan LLC has one active retirement plan on file, the Dart Container Corporation Employees' 401(k) Plus Plan, with 15,631 participants and $1.1 billion in assets in 2025. Vanguard has been its recordkeeper since 2015. No traditional pension plan appears in Dart Container of Michigan's filings since 2009.

Active plans: 1
Participants: 15,631
Plan assets: $1.1 billion
401(k) recordkeeper: Vanguard
Plans on file: 1
Industry: Manufacturing

The plan

Dart Container Corporation Employees' 401(k) Plus Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 001Employer EIN 06-1720526
Participants (2025): 15,631
Net assets (2025): $1.1 billion
Recordkeeper: VanguardEarlier: Schwab (2009–2014)
Plan administrator: Dart Container of Michigan LLC
500 Hogsback Road
Mason, MI 48854
(517) 676-3800As filed for 2025
In effect since: April 1, 1967

Plans merged into this one: Solo Cup Company Profit Sharing Plus (2014).

Earlier plan names: Dart Container Corporation Employees 401(k) Plan and Trust.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	15,631	$1.1 billion	Vanguard
2024	15,485	$1.0 billion	Vanguard
2023	16,342	$962 million	Vanguard
2022	16,025	$856 million	Vanguard
2021	15,320	$1.0 billion	Vanguard
2020	14,644	$956 million	Vanguard
2019	16,301	$880 million	Vanguard
2018	16,034	$761 million	Vanguard
2017	17,796	$795 million	Vanguard
2016	15,726	$684 million	Vanguard
2015	14,976	$632 million	Vanguard
2014	8,356	$365 million	Schwab
2013	8,624	$333 million	Schwab
2012	7,349	$277 million	Schwab
2011	7,198	$246 million	Schwab
2010	7,192	$239 million	Schwab
2009	7,703	$212 million	Schwab

If you had money in one of these plans

Call Vanguard (investor.vanguard.com), which runs the Dart Container Corporation Employees' 401(k) Plus Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((517) 676-3800). That number was filed for 2025; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

The plan

Dart Container Corporation Employees' 401(k) Plus Plan

If you had money in one of these plans

What these numbers are

Other manufacturing employers in MI