CTS 401(k) and pension plans

CTS Corporation, Lisle, IL. EIN 35-0225010. Annual reports 2009–2025.

CTS Corporation has one active retirement plan on file, the CTS Corporation Retirement Savings Plan, with 1,194 participants and $164 million in assets in 2025. Vanguard has been its recordkeeper since 2009.

Active plans: 1
Participants: 1,194
Plan assets: $164 million
401(k) recordkeeper: Vanguard
Plans on file: 2
Industry: Manufacturing

All 2 plans

Active plans first

CTS Corporation Retirement Savings Plan

401(k)Active

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

Plan number: 009Employer EIN 35-0225010
Participants (2025): 1,194
Net assets (2025): $164 million
Recordkeeper: Vanguard2009–2025
Plan administrator: CTS Corporation Benefit Plan Administration Committee
4925 Indiana Avenue
Lisle, IL 60532
(630) 577-8813As filed for 2025
In effect since: December 1, 1952

Plans merged into this one: CTS Corporation Pension Plan (2022).

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	1,194	$164 million	Vanguard
2024	1,095	$160 million	Vanguard
2023	1,112	$153 million	Vanguard
2022	1,216	$139 million	Vanguard
2021	1,225	$155 million	Vanguard
2020	1,191	$137 million	Vanguard
2019	1,269	$117 million	Vanguard
2018	1,317	$105 million	Vanguard
2017	1,280	$114 million	Vanguard
2016	1,325	$104 million	Vanguard
2015	1,319	$100 million	Vanguard
2014	1,520	$108 million	Vanguard
2013	1,828	$124 million	Vanguard
2012	1,841	$101 million	Vanguard
2011	1,928	$95.9 million	Vanguard
2010	1,973	$103 million	Vanguard
2009	2,037	$96.2 million	Vanguard

CTS Corporation Pension Plan

Pension (defined benefit), frozenMergedUnion (multiemployer)

Merged. In 2022 its assets moved to the CTS Corporation Retirement Saving Plan, sponsored by CTS Corporation (EIN 35-0225010, plan 009). Accounts moved with them, so that plan is the one to contact.

Plan number: 002Employer EIN 35-0225010
Participants (2020): 2,413
Net assets (2020): $234 million
Last listed administrator: Alight2009–2018
Plan administrator: CTS Corporation Benefit Plan Administration Committee
4925 Indiana Avenue
Lisle, IL 60532
(574) 523-3800As filed for 2022
In effect since: January 1, 1966

Year by year, 2009 to 2022

Plan year	Participants	Net assets	Recordkeeper
2022	0	$0	not listed
2021	0	$33.8 million	not listed
2020	2,413	$234 million	not listed
2019	2,746	$278 million	not listed
2018	2,858	$277 million	Alight
2017	2,949	$268 million	Alight
2016	3,373	$303 million	Alight
2015	3,668	$305 million	Alight
2014	4,290	$316 million	Alight
2013	4,404	$319 million	Alight
2012	4,503	$282 million	Alight
2011	4,611	$256 million	Alight
2010	4,714	$270 million	Alight
2009	4,817	$232 million	Alight

If you had money in one of these plans

Call Vanguard (investor.vanguard.com), which runs the CTS Corporation Retirement Savings 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 ((630) 577-8813). That number was filed for 2025; ask for the benefits or retirement plan office.
If your plan was merged, your account moved with it. Follow the link on the plan to the plan it went into, and contact that one.
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.

All 2 plans

CTS Corporation Retirement Savings Plan

CTS Corporation Pension Plan

If you had money in one of these plans

What these numbers are

Other manufacturing employers in IL