Amphenol Corporation & Affiliated Companies has 4 active retirement plans on file. The largest is the Amphenol Corporation Employee SAVINGS/401(k) Plan, with 10,313 participants and $948 million in assets in 2025. Fidelity has been its recordkeeper since 2009.
Amphenol Corporation & Affiliated Companies 358 Hall Avenue Wallingford, CT 06492 (203) 265-8600As filed for 2025
In effect since
November 1, 2018
Year by year, 2018 to 2025
Plan year
Participants
Net assets
Recordkeeper
2025
41
$10.8 million
not listed
2024
42
$9.8 million
not listed
2023
46
$9.5 million
Fidelity
2022
137
$13.1 million
Fidelity
2021
155
$18.5 million
Fidelity
2020
178
$17.0 million
Fidelity
2019
218
$16.9 million
Fidelity
2018
228
$15.7 million
Fidelity
Pension Plan for Employees of Amphenol Corporation
Pension (defined benefit)Active
Active. The plan filed its annual report for the 2024 plan year.
Plan number
001Employer EIN 22-2785165
Participants (2024)
3,243
Net assets (2024)
$336 million
Plan administrator
Amphenol Corporation & Affiliated Companies 358 Hall Avenue Wallingford, CT 06492 (203) 265-8900As filed for 2024
In effect since
January 1, 1987
Year by year, 2009 to 2024
Plan year
Participants
Net assets
Recordkeeper
2024
3,243
$336 million
not listed
2023
4,484
$371 million
not listed
2022
4,644
$365 million
not listed
2021
4,820
$495 million
not listed
2020
5,005
$484 million
not listed
2019
5,323
$443 million
not listed
2018
5,456
$393 million
not listed
2017
5,587
$442 million
not listed
2016
5,715
$335 million
not listed
2015
6,103
$327 million
not listed
2014
6,201
$335 million
not listed
2013
6,318
$323 million
not listed
2012
6,467
$286 million
not listed
2011
6,573
$255 million
not listed
2010
6,665
$258 million
not listed
2009
6,754
$230 million
not listed
Amphenol Subsidiaries 401(k) Plan
401(k)Merged
Merged. In 2018 its assets moved to the Amphenol Corporation Employee SAVINGS/401(k) Plan, sponsored by Amphenol Corporation & Affiliated Companies (EIN 22-2785165, plan 010). Accounts moved with them, so that plan is the one to contact.
Pension Plan for Hourly-Paid Employees of TMS Division
Pension (defined benefit)Stopped filing
No annual report since the 2009 plan year, and no final report on record. The plan may have been merged, renamed or re-filed under another number; ask the plan administrator below.
Plan number
004Employer EIN 22-2785165
Participants (2009)
240
Net assets (2009)
$7.6 million
Plan administrator
Amphenol Corporation & Affiliated Companies 358 Hall Avenue Wallingford, CT 06492 (203) 265-8900As filed for 2009
In effect since
January 1, 1961
If you had money in one of these plans
Call Fidelity (fidelity.com), which runs the Amphenol Corporation Employee SAVINGS/401(k) 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 ((203) 265-8600). 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.
If your plan closed, unclaimed balances usually went to an IRA in your name, to the PBGC's missing participants program, or to state unclaimed property. Here is how to check each 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.