Employer · plans filed under one EIN
Olin Corporation
Clayton, MO · Manufacturing
Form 5500 information is as filed by the plan administrator with the Department of Labor and may be amended. Figures reflect the plan year shown, not current balances.
Olin Corporation, based in Clayton, Missouri, sponsors 3 retirement plans with 100 or more participants: 1 defined contribution and 2 defined benefit. Together they reported 28,755 participant records and $3.46B in net assets.
The largest is Olin Corporation Employees Pension Plan, a defined benefit pension plan with 18,546 participants. A person can be counted in more than one plan, so the participant total is a count of records rather than of people.
Employer contributions across the plans were $68.9M and participant contributions $61.0M in the latest plan years; benefits paid were $304M. Schedule C compensation reported to service provider organisations totalled $2.4M.
Combined net assets moved from $2.25B in 2009 to $1.52B in 2025 (down 32%). Plan mergers and spin-offs show up here as steps in the series.
Plans
| Plan | Kind | Plan year | Participants | Net assets | Per participant | Employer / active | Sch. C compensation |
|---|---|---|---|---|---|---|---|
| Olin Corporation Employees Pension Plan | defined benefit pension plan | 2024 | 18,546 | $1.80B | $96,887 | — | $1.2M |
| Olin Corporation Retirement Savings Plan | ESOP with a 401(k) feature | 2025 | 9,102 | $1.52B | $167,214 | $10,081 | $1.1M |
| The Goco Pension Plan | defined benefit pension plan | 2024 | 1,107 | $146M | $131,797 | — | $105K |
| US median, plan year 2024: DC plans $53,102 per participant, $2,175 employer contribution per active participant; DB plans $86,221 and $10,244. | |||||||
Trend by plan year
| Plan year | Plans | Participant records | Net assets | Employer contributions | Participant contributions |
|---|---|---|---|---|---|
| 2025 | 1 | 9,102 | $1.52B | $68.9M | $61.0M |
| 2024 | 3 | 28,708 | $3.30B | $52.2M | $56.7M |
| 2023 | 3 | 28,770 | $3.27B | $49.8M | $55.0M |
| 2022 | 3 | 29,905 | $3.07B | $49.7M | $53.0M |
| 2021 | 3 | 30,293 | $3.88B | $48.7M | $50.2M |
| 2020 | 3 | 31,132 | $3.61B | $33.4M | $43.0M |
| 2019 | 3 | 30,169 | $3.22B | $56.4M | $39.0M |
| 2018 | 3 | 31,415 | $2.86B | $42.6M | $35.9M |
| 2017 | 3 | 31,939 | $3.18B | $39.8M | $33.7M |
| 2016 | 2 | 9,157 | $872M | $38.2M | $31.8M |
| 2015 | 3 | 32,793 | $2.73B | $30.3M | $20.3M |
| 2014 | 3 | 29,951 | $2.67B | $20.8M | $17.3M |
| 2013 | 3 | 30,424 | $2.55B | $20.3M | $16.1M |
| 2012 | 3 | 30,972 | $2.61B | $19.2M | $15.2M |
| 2011 | 3 | 31,427 | $2.50B | $18.3M | $14.1M |
| 2010 | 3 | 32,309 | $2.37B | $14.2M | $12.9M |
| 2009 | 3 | 32,970 | $2.25B | $17.4M | $12.7M |
History of the plans listed above, in the years each filed the full Form 5500 with 100 or more participants. Plans that have since terminated are not included.
Service providers
| Organisation | Services reported | Plans | Compensation reported |
|---|---|---|---|
| The Segal Group, Inc. | Actuarial; Consulting (general) | 2 | $961,035 |
| Advised Assets Group, LLC | Investment management | 1 | $494,964 |
| Empower Annuity Insurance Company | — | 1 | $274,685 |
| Conduent HR Services | Plan Administrator | 2 | $143,760 |
| Wells Fargo Advisors | Investment advisory (plan); Consulting (general) | 2 | $132,500 |
| State Street Global Advisors Trust | — | 1 | $75,000 |
| Olin Corporation | Other services | 2 | $67,912 |
| McGuirewoods LLP | Legal | 1 | $60,626 |
| Forvis Mazars LLP | Accounting (including auditing) | 1 | $52,891 |
| Rubinbrown LLP | Accounting (including auditing) | 2 | $39,600 |
| The Segal Company Eastern States in | Consulting (general) | 1 | $24,609 |
| Armanino LLP | Accounting (including auditing) | 1 | $24,150 |
| LIFESTATUS360 LLC | Recordkeeping and information management | 1 | $6,280 |
| Charles Schwab & Co. Inc. | Investment advisory (participants); Securities brokerage | 1 | $5,887 |
Organisations paid $5,000 or more by any of these plans, from Schedule C. Individuals are not shown.
Questions and answers
How many retirement plans does Olin Corporation have?
3 plans with 100 or more participants filed Form 5500 under its employer identification number for the latest plan years: Olin Corporation Employees Pension Plan, Olin Corporation Retirement Savings Plan and The Goco Pension Plan. Smaller plans and plans filed under a subsidiary's number are not grouped here.
How much does Olin Corporation contribute to its plans?
$68,901,575 in employer contributions across these plans in their latest plan years, about $7,967 per active participant record. Form 5500 reports totals and not the match or accrual formula.
Who provides services to these plans?
Schedule C filings name The Segal Group, Inc., Advised Assets Group, LLC, Empower Annuity Insurance Company and Conduent HR Services and others. Only organisations paid $5,000 or more by a plan are listed on Schedule C.
Where does this come from?
Form 5500 annual reports filed with the Department of Labor's EFAST2 system, from the EBSA research files, with filings received through 24 Aug 2026. Figures are as filed and may be amended.
Provenance
Source: U.S. Department of Labor, Employee Benefits Security Administration, Form 5500 research files, public domain, with filings received through 24 Aug 2026. Plans are grouped by the sponsor's employer identification number exactly as filed; a company that files under several EINs appears as several employers. See the methodology and corrections.