Koppers Inc. $625,000 Odor Emissions Class Action Settlement

Individuals who owned, rented or lived in a residential property within one mile of the Koppers facility in Cicero, Illinois, at any time between Aug. 6, 2019, and Sept. 22, 2026, may be eligible to claim a cash payment from a class action settlement.

Koppers agreed to pay $625,000 to settle a class action lawsuit alleging odorous emissions from its Cicero facility affected nearby homes and public spaces.

Who can file a claim?

Class members must meet all of the following criteria:

• They owned, rented or occupied a residential property within one mile of the Koppers facility at 3900 S. Laramie Ave., Cicero, Illinois 60804.
• They lived at or owned the property at any time from Aug. 6, 2019, to Sept. 22, 2026.

How much can class members receive?

The total settlement fund is $625,000. The exact amount each class member receives depends on the number of valid claims submitted and approved, as well as deductions for attorneys' fees, expenses, service awards and administrative costs. After these deductions, the settlement administrator will divide the remaining net settlement fund equally among all approved class members.

How to claim an award

To claim an award, eligible individuals must submit an online claim form or print and complete the PDF claim form and mail it to the settlement administrator.

Settlement administrator's mailing address: Liddle Sheets, Attn: Koppers Claim Forms, 975 E. Jefferson Ave., Detroit, MI 48207-3101

The deadline to file a claim is Dec. 7, 2026.

Required proof/documentation

Claimants must provide proof of identity and proof of ownership or occupancy. Acceptable forms of identification include a driver's license, state ID card or other government-issued photo ID. Proof of ownership can be a deed or utility bill; proof of tenancy can be a lease agreement or utility bill.

Payout options

• Payment by check mailed to the address provided

Settlement fund breakdown

The $625,000 settlement fund includes:

• Settlement administration costs: Amount not specified
• Attorneys' fees: Up to $208,333
• Attorneys' expenses: Amount not specified
• Service award to class representative: Up to $7,500
• Payments to eligible class members: Remainder of the fund

Important dates

• Deadline to opt out: Nov. 21, 2026
• Deadline to file a claim: Dec. 7, 2026
• Fairness hearing: Jan. 19, 2027

When is the Koppers settlement payout date?

The settlement administrator will issue payments to eligible class members after the court resolves any appeals and grants final approval of the settlement.

Why did this class action settlement happen?

The class action lawsuit alleged odorous emissions from the Koppers facility in Cicero, Illinois, affected residential properties and public spaces within a one-mile radius.

Koppers denied any wrongdoing but agreed to settle to avoid the costs, risks and delays of continued litigation.

Sources

1. Claim form
2. Class notice
3. Settlement website