401(k) · DOL Form 5500 · 2023

Seagen Inc. 401(k) Plan

Data updated 2026-08-25

$560M
Total assets Above avg plan size
2,901
Participants Above avg headcount
98th
Percentile by assets National rank
$193,038
Avg per participant Above avg balance/head
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Official DOL plan name: Seagen Inc. 401(k) Plan · Sponsored by Seagen Inc. · Washington · Professional & Technical Services

$560M in assets, 2,901 participants

Seagen Inc.'s Seagen Inc. 401(k) Plan reported $560M in total assets and 2,901 participants in its 2023 DOL Form 5500 filing, ranking in the 98th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #19,999 in Professional & Technical Services (20,321 peers)

Where Seagen Inc. 401(k) Plan sits by assets

Seagen Inc. 401(k) Plan sits in the top 5% of all filed plans by assets, $560M for 2,901 participants (~$193,038/participant), up 43.5% in 2023.

#19,999
in Professional & Technical Services (20,321 peers)
+43.5%
assets growth YoY
5.6×
vs typical plan assets (national mean)

Seagen Inc. 401(k) Plan's outsized position by total assets

Seagen Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$560,003,888 Top 2% higher than 98% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Seagen Inc. 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Seagen Inc. 401(k) Plan lands in the large band (2,901 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Seagen Inc. 401(k) Plan reported net income rose from -$13M in the plan year 2022 filing to $170M in the plan year 2023 filing.
  • Seagen Inc. 401(k) Plan end-of-year assets rose from $390M in the plan year 2022 filing to $560M in the plan year 2023 filing.
  • Seagen Inc. 401(k) Plan reported participants rose from 2,404 in the plan year 2022 filing to 2,901 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 911874389 · Seagen Inc. PY 2023 · 401(k)

Seagen Inc. 401(k) Plan · $560M · 2,901 · 98th

  • EOY $560M
  • 5500 2,901
  • ASSETS 98th
  • PCT 401(k)
  • EIN near Acushnet Company 401(k) Plan
  • RANK ind #19999

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Washington →

Seagen Inc. 401(k) Plan in the asset neighbourhood

Alliance Coal, LLC and Affiliates Profit Sharing and Savings PlanAlliance Coal, LLC and Affil…$561MEndurance 401(k) Plan$561MAcushnet Company 401(k) Plan$560MSeagen Inc. 401(k) Plan$560MGainwell Technologies 401(k) PlanGainwell Technologies 401(k)…$559M
End-of-year total assets ($M) among Seagen Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$390M
Net Assets (End of Year)$560M
Net Income$170M
Employer EIN911874389
Plan Effective Date1998-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Seagen Inc.)

Sponsor-wide plan assets over time

All Seagen Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$560M 43.46894861873077% vs 2022
2023 filing year
$300M$400M$500M$600M 20222023 $390M $560M ▲ +43.5%
Year Plans Participants Total Assets
2022 1 2,404 $390M
2023 2 6,198 $560M

Nearby 401(k) Plans in Washington

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Seagen Inc. 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -20020406080 Total assets ($B) Participants Seagen Inc. 401(k) Plan, Total assets ($B): 0.560003888 · Participants: 2901Seagen Inc. 401(k) PlanThe Boeing Company 401(k) Retirement Plan, Total assets ($B): 72.246135158 · Participants: 128910The Boeing Company 401(k) Retirement PlanMicrosoft Corporation Savings Plus 401(k) Plan, Total assets ($B): 53.225853429 · Participants: 123296Microsoft Corporation Savings Plus 401(k) PlanCostco 401(k) Retirement Plan, Total assets ($B): 33.384845813 · Participants: 192744Costco 401(k) Retirement PlanT-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust, Total assets ($B): 8.338937292 · Participants: 71538T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust401(k) Savings Plan, Total assets ($B): 8.118808679 · Participants: 87590401(k) Savings Plan
Seagen Inc. 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants
Compare Seagen Inc. 401(k) Plan side-by-side with 3 peers →

Seagen Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Washington, the nearest 401(k) by assets is Acushnet Company 401(k) Plan in MA ($560M); by covered participants it is Drg Employer 401(k) Plan in CO (2,901 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($560M here).

Similar participant headcount

Nearest other-state filings by covered participants (2,901 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Seagen Inc. 401(k) Plan assets move in 2023? ▼
Seagen Inc. 401(k) Plan surged - up 43.5% during 2023, from $390M to $560M. Reported net income was $170M.
How have Seagen Inc. plan assets changed over time? ▼
Across 2 plan years on file (2022-2023), Seagen Inc.'s sponsor-wide assets grew 43.5%, from $390M to $560M.
Where does Seagen Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Seagen Inc. 401(k) Plan ranks in the 98th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Seagen Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Acushnet Company 401(k) Plan in MA ($560M, 2,635 participants).
Which 401(k) plans cover a similar participant headcount to Seagen Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Drg Employer 401(k) Plan in CO (2,901 participants, $4M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 911874389.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.