X 401(k) plan

X Corp., San Francisco, CA. EIN 20-8913779. Annual reports 2009–2024. Also filed as Twitter Inc.; Twitter, Inc.

X Corp. has one active retirement plan on file, the X Corp. 401(k) Plan, with 5,480 participants and $574 million in assets in 2024. Vanguard has been its recordkeeper since 2014. No traditional pension plan appears in X's filings since 2009.

Active plans: 1
Participants: 5,480
Plan assets: $574 million
401(k) recordkeeper: Vanguard
Plans on file: 1
Industry: Information and media

The plan

X Corp. 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 20-8913779
Participants (2024): 5,480
Net assets (2024): $574 million
Recordkeeper: VanguardEarlier: Fidelity (2011–2013)
Plan administrator: X Corp.
1355 Market Street
San Francisco, CA 94103
(650) 274-4614As filed for 2024
In effect since: October 1, 2007

Earlier sponsor: Twitter Inc. (2009–2022).

Earlier plan names: Twitter 401K Savings Plan; Twitter 401(k) Savings Plan; Twitter, Inc. 401(k) Savings Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	5,480	$574 million	Vanguard
2023	6,071	$573 million	Vanguard
2022	7,760	$588 million	Vanguard
2021	7,305	$610 million	Vanguard
2020	5,825	$441 million	Vanguard
2019	5,652	$306 million	Vanguard
2018	4,496	$197 million	Vanguard
2017	4,014	$180 million	Vanguard
2016	3,583	$136 million	Vanguard
2015	3,555	$101 million	Vanguard
2014	2,569	$68.9 million	Vanguard
2013	2,410	$38.4 million	Fidelity
2012	1,397	$15.8 million	Fidelity
2011	739	$5.5 million	Fidelity
2010	294	$1.5 million	not listed
2009	55	$178,558	not listed

If you had money in one of these plans

Call Vanguard (investor.vanguard.com), which runs the X Corp. 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 ((650) 274-4614). That number was filed for 2024; 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

X Corp. 401(k) Plan

If you had money in one of these plans

What these numbers are

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