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Employer with a benefit plan

WAUSAU PAPER CORP.

The Employer Identification Number (EIN) for WAUSAU PAPER CORP. is 39-0690900.

At a glance

EIN
39-0690900 · 390690900
Legal name
WAUSAU PAPER CORP.
Also filed as
WAUSAU MOSINEE PAPER CORP; WAUSAU MOSINEE PAPER MILLS CORP; WAUSAU PAPER MILLS CO
Address on file
2929 ARCH STREET, SUITE 2600, PHILADELPHIA, PA 19104
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
0008913206
Source: Texas Comptroller · as of 2026-09-05

Benefit plans

DOL Form 5500 filings (EFAST2) · records as of 2025-10-13

Benefit plan 523, 2024 filing
WAUSAU PAPER CORP NON-UNION RETIREE HEALTH CARE SAVINGS PLAN
Source: DOL 5500 · as of 2025-10-13
Participants (start of year)
115
Source: DOL 5500 · as of 2025-10-13
Plan features
Health (other than dental or vision)
Source: DOL 5500 · as of 2025-10-13
Plan type
Single-employer plan
Source: DOL 5500 · as of 2025-10-13
Business code (NAICS)
322100
Source: DOL 5500 · as of 2025-10-13
Benefit plan 523, 2023 filing
WAUSAU PAPER CORP NON-UNION RETIREE HEALTH CARE SAVINGS PLAN
Source: DOL 5500 · as of 2024-10-10
Participants (start of year)
123
Source: DOL 5500 · as of 2024-10-10
Plan features
Health (other than dental or vision)
Source: DOL 5500 · as of 2024-10-10
Plan type
Single-employer plan
Source: DOL 5500 · as of 2024-10-10
Business code (NAICS)
322100
Source: DOL 5500 · as of 2024-10-10
Benefit plan 523, 2022 filing
WAUSAU PAPER CORP NON-UNION RETIREE HEALTH CARE SAVINGS PLAN
Source: DOL 5500 · as of 2023-10-12
Participants (start of year)
123
Source: DOL 5500 · as of 2023-10-12

What this record is

Public filings that carry this EIN (DOL Form 5500 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 Pennsylvania Department of State, Bureau of Corporations and Charitable Organizations; see the Pennsylvania 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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