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Employer with a benefit plan

A.M. CASTLE & CO.

The Employer Identification Number (EIN) for A.M. CASTLE & CO. is 36-0879160.

At a glance

EIN
36-0879160 · 360879160
Legal name
A.M. CASTLE & CO.
Also filed as
CASTLE A M & CO
Address on file
1420 KENSINGTON RD, OAK BROOK, IL 605232165
Records show
SEC filer; employer with a benefit plan; state registration
Latest record
2026-09-05

State registration

Texas Comptroller active franchise taxpayers file · records as of 2026-09-05

Texas registration
Active · Foreign profit corporation
Source: Texas Comptroller · as of 2026-09-05
Texas document number
0800009183
Source: Texas Comptroller · as of 2026-09-05

Benefit plans

DOL Form 5500 filings (EFAST2) · records as of 2025-10-15

Benefit plan 1, 2024 filing
PENSION PLAN FOR EMPLOYEES OF A.M. CASTLE & CO.
Source: DOL 5500 · as of 2025-10-15
Participants (start of year)
631
Source: DOL 5500 · as of 2025-10-15
Plan features
Defined benefit (cash balance, other)
Source: DOL 5500 · as of 2025-10-15
Plan type
Single-employer plan
Source: DOL 5500 · as of 2025-10-15
Business code (NAICS)
423500
Source: DOL 5500 · as of 2025-10-15
Benefit plan 2, 2024 filing
A. M. CASTLE & CO. 401(K) SAVINGS AND RETIREMENT PLAN
Source: DOL 5500 · as of 2025-10-15
Participants (start of year)
696
Source: DOL 5500 · as of 2025-10-15
Plan features
Profit-sharing; ERISA 404(c) plan; Participant-directed; 401(k) feature; 401(m) matching; Participant-directed brokerage
Source: DOL 5500 · as of 2025-10-15
Plan type
Single-employer plan
Source: DOL 5500 · as of 2025-10-15
Business code (NAICS)
423500
Source: DOL 5500 · as of 2025-10-15
Benefit plan 501, 2024 filing
A.M. CASTLE & CO. EMPLOYEE WELFARE BENEFITS PLAN
Source: DOL 5500 · as of 2025-08-08
Participants (start of year)
449
Source: DOL 5500 · as of 2025-08-08

What this record is

Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), DOL Form 5500-SF filings (EFAST2), SEC EDGAR company filings and Texas Comptroller active franchise taxpayers file), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.

What it is not

Registry status, formation date, and registered agent come from the Illinois Secretary of State, Department of Business Services; see the Illinois business entity search.

If something is wrong

A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.

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