Glaxosmithkline LLC, Philadelphia, PA. EIN 23-1099050. Annual reports 2009–2025.
Glaxosmithkline LLC has 2 active retirement plans on file. The largest is the GSK 401(k) Plan, with 21,352 participants and $10.0 billion in assets in 2025.
Glaxosmithkline LLC 410 Blackwell Street Durham, NC 27701 (215) 751-4908As filed for 2024
In effect since
January 1, 1980
Year by year, 2009 to 2024
Plan year
Participants
Net assets
Recordkeeper
2024
35,701
$2.9 billion
Alight
2023
37,757
$2.9 billion
Alight
2022
39,631
$2.8 billion
Alight
2021
42,943
$3.4 billion
Alight
2020
45,247
$3.6 billion
Alight
2019
45,554
$3.7 billion
Alight
2018
45,344
$3.6 billion
Alight
2017
46,386
$4.1 billion
Alight
2016
47,633
$3.7 billion
not listed
2015
47,570
$3.7 billion
not listed
2014
49,973
$4.1 billion
not listed
2013
52,966
$4.2 billion
not listed
2012
55,870
$4.1 billion
not listed
2011
55,929
$3.8 billion
not listed
2010
57,957
$3.6 billion
Affiliated Computer Services
2009
60,490
$3.3 billion
Affiliated Computer Services
If you had money in one of these plans
Call Alight (alight.com), which runs the Glaxosmithkline Cash Balance Pension 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 ((215) 751-4908). 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.