401(k) · DOL Form 5500 · 2023
Ionis Pharmaceuticals, Inc. 401(k) Plan
Data updated 2026-08-11
- $255M
- Total assets
- 760
- Participants
- 96th
- Percentile by assets
- $335,278
- Avg per participant
Official DOL plan name: Ionis Pharmaceuticals 401(k) Plan · Sponsored by Ionis Pharmaceuticals, Inc. · California · Professional & Technical Services
$255M in assets, 760 participants
Ionis Pharmaceuticals, Inc.'s Ionis Pharmaceuticals 401(k) Plan reported $255M in total assets and 760 participants in its 2023 DOL Form 5500 filing, ranking in the 96th 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.
- 96th percentile by assets (of 127,072 plans)
- #19,661 in Professional & Technical Services (20,321 peers)
Where Ionis Pharmaceuticals 401(k) Plan sits by assets
Ionis Pharmaceuticals 401(k) Plan sits in the top 5% of all filed plans by assets, $255M for 760 participants (~$335,278/participant), up 30.6% in 2023.
- $255M
- total plan assets (2023 EOY)
- 760
- covered participants
- 96th
- percentile by assets (of 127,072 plans)
- $335,278
- avg assets per participant
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Ionis Pharmaceuticals 401(k) Plan reported net income rose from -$39M in the plan year 2022 filing to $60M in the plan year 2023 filing.
- Ionis Pharmaceuticals 401(k) Plan end-of-year assets rose from $195M in the plan year 2022 filing to $255M in the plan year 2023 filing.
- Ionis Pharmaceuticals 401(k) Plan reported participants rose from 609 in the plan year 2022 filing to 760 in the plan year 2023 filing.
Ionis Pharmaceuticals 401(k) Plan vs the 2023 asset distribution
By assets, Ionis Pharmaceuticals 401(k) Plan outranks 96% of the 127,072 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 2.6x the national average plan size of $100M (721 average participants).
Scale-class filing particulars (2023)
| Total Assets (Beginning of Year) | $195M |
|---|---|
| Net Assets (End of Year) | $255M |
| Net Income | $60M |
| Employer EIN | 330336973 |
| Plan Effective Date | 1991-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Ionis Pharmaceuticals, Inc.)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 1 | 609 | $195M |
| 2023 | 1 | 760 | $255M |
| 2024 | 1 | 897 | $316M |
Nearby 401(k) Plans in California
Peer 401(k) plans, same state, same plan type, ranked by total assets.
Ionis Pharmaceuticals 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants
- Wells Fargo & Company 401(k) Plan $51.8B · 193,919
- Google LLC 401(k) Savings Plan $39.0B · 122,867
- Oracle Corporation 401(k) Savings and Investment Plan $26.3B · 63,105
- Intel 401(k) Savings Plan $22.2B · 59,863
- Apple 401(k) Plan $19.8B · 106,111
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Ionis Pharmaceuticals 401(k) Plan by total assets, not by location.
- Software Ag USA, Inc. Profit Sharing Plan (VA) $255M · 587
- Mitsubishi Motors North America, Inc. 401(k) Savings Plan (TN) $255M · 279
- United Community Banks, Inc. 401(k) Plan (GA) $255M · 2,934
- Capital Accumulation Plan (OH) $255M · 2,353
Frequently Asked Questions
How did Ionis Pharmaceuticals 401(k) Plan assets move in 2023? ▼
How have Ionis Pharmaceuticals, Inc. plan assets changed over time? ▼
Where does Ionis Pharmaceuticals 401(k) Plan rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Ionis Pharmaceuticals 401(k) Plan? ▼
Next read for Ionis Pharmaceuticals 401(k) Plan
Scale reading
Ways to act on Ionis Pharmaceuticals 401(k) Plan's numbers.
- By total assets, Ionis Pharmaceuticals 401(k) Plan ranks in the top 5% of all filed plans by assets. See the largest plans
- Compare it side-by-side against 3 similar 401(k) plans in California. Compare plans
- Ionis Pharmaceuticals, Inc.'s sponsor-wide assets have grown 62.0% since 2022 across 3 plan years on file. More Professional & Technical Services plans