Koppers (KOP) Q3 2026 earnings review
Koppers generates record cash, but cost inflation cuts its profit
Koppers, the maker of railroad ties, utility poles and wood-treatment chemicals, sold more products but saw its profit fall on raw material inflation. Third-quarter sales rose 3% while operating cash profit excluding one-offs dropped 18%, because cost inflation in carbon chemicals and price cuts on railroad ties outweighed growth in wood preservatives. Chief executive Leroy Ball cut the full-year profit outlook for a third straight quarter, leaving fourth-quarter operating cash profit down 17% by our math.
| Sales from continuing businesses (by our math) | +4.2% reported sales +2.8% ($499.1M) |
|---|---|
| Operating cash profit (Ebitda), excluding one-offs | $58.0M −18.2% from a year ago |
| Nine-month free cash flow | $92.0M $39.0M a year ago |
| Full-year operating cash profit outlook | Cut $22.5M third cut this year, to $220–225M |
⚖️ Verdict: 🔴 Bearish
The story got worse because raw material and freight costs are growing faster than the company's internal cost-saving program, forcing its largest outlook cut of the year. Even the railroad and utility division saw profit drop 24% as rail customers pushed crosstie prices down. One bright spot: working capital discipline and a $5 million capital spending cut allowed Koppers to raise its full-year free cash flow target by $5 million.
The question now is whether 2027 contract price increases and the Stickney plant closure will lift earnings or merely offset another year of raw material inflation and expiring copper hedges. Either 2027 commercial actions reset profit higher as Ball promised, or customer pushback in rail ties and wood preservatives keeps margins compressed. The initial 2027 profit outlook in February will settle it.
🐂 Bull Case
Wood Preservatives Kept Growing Despite Copper Costs
Performance Chemicals, the division that makes copper-based chemicals to protect outdoor lumber from rot, is carrying Koppers this year. After losing customers in 2025, the division won back accounts in 2026 and kept growing in the third quarter even after early-year inventory building slowed.
Division sales rose 11.9% from a year ago to $161.5 million, as volume grew 10% in the Americas on "market share gains and inventory restocking". Operating cash profit (Ebitda, excluding one-offs) rose 13.4% to $29.6 million, and the division's profit margin edged up 0.2 percentage points to 18.3%.
That margin held up because higher factory utilization offset $4.7 million in extra raw material costs from scrap copper, net of hedging gains. This division now brings in more than half of the company's total operating cash profit, but its copper hedges roll off next year.
What to watch: fourth-quarter division profit margin and 2027 customer price resets on the conference call. A margin Drop below 18% would show scrap copper inflation is outrunning the remaining hedges before 2027 price increases take effect.
Working Capital and Lower Spending Lifted Cash
While earnings fell, Koppers generated record nine-month cash flow and raised its full-year free cash flow outlook by $5 million to $115–135 million. Chief executive Leroy Ball attributed the cash performance to "taking decisive action to enhance operational efficiency and controlling what we can control".
- Nine-month operating cash flow: $126.9 million, up from $77.4 million a year ago
- Nine-month free cash flow: $92.0 million, up from $39.0 million a year ago
- Capital spending plan for 2026: cut by $5 million to $50 million
- Net debt (debt minus cash): $845.4 million, down $35.8 million since December
The cash increase did not come from operating profit, and the full-year free cash flow raise came entirely from the $5 million capital spending cut. Cash rose because Koppers reduced inventory by $18.9 million, stretched accounts payable by $32.9 million, and did not repeat last year's $14 million pension payment. Because trailing 12-month operating cash profit fell to $231.5 million by our math, net debt rose to 3.65 times cash profit, further above the 2.5 times target.
What to watch: fourth-quarter accounts payable and inventory balances in the annual report. A reversal in vendor payment timing would show how much of the 2026 cash record was borrowed from 2027.
🐻 Bear Case
Cost Inflation Forced a Third Outlook Cut
Koppers relies on Catalyst, its multi-year internal cost-saving and operational restructuring program, to lift profit margins above 15% by 2028. "Raw material and logistics costs have escalated throughout the year faster than we can recover in the near term," chief executive Leroy Ball said, and he argued that "commercial actions that take effect in 2027 will help reset earnings to a meaningfully higher level".
In the third quarter, those input and shipping costs overwhelmed the internal savings and forced a third consecutive cut to the full-year profit plan. Cost of sales — the direct cost of raw materials, freight and factory labor — jumped 4.2 percentage points of revenue from a year ago to 80.1%, while selling and administrative overhead rose 0.5 percentage points to 8.2% on higher pay and technology bills.
Total operating cash profit (Ebitda, excluding one-offs) fell 18.2% from a year ago to $58.0 million, and Koppers cut its 2026 outlook for that measure by $22.5 million at the middle of the range, to $220–225 million. Because every dollar of Catalyst savings in 2026 has vanished into raw material inflation, the 2027 recovery now depends on customers accepting higher prices rather than on internal cost cuts alone.
What to watch: the initial 2027 profit outlook when fourth-quarter results arrive in February. A midpoint below $255 million would mean 2027 contract price increases failed to recover this year's raw material inflation alongside the promised plant closure savings.
Carbon Chemical Profit Dropped 61% on Shutdown
Carbon Materials and Chemicals distills coal tar into carbon pitch and chemicals used to make aluminum, steel and rubber. To cut exposure to shrinking North American coal tar supply, Koppers accelerated the shutdown of its Stickney, Illinois distillation plant to the end of the third quarter and shifted production to Denmark.
Division sales slipped 3.2% from a year ago to $104.8 million as lower carbon pitch volumes outweighed a 4% global price increase and $2.6 million in currency gains. Operating cash profit (Ebitda, excluding one-offs) fell 60.9% to $6.1 million, compressing the division's profit margin by 8.6 percentage points to 5.8%.
Koppers blamed the drop on $9.0 million in higher raw material costs — partly driven by higher energy prices — and a $1.7 million penalty from lower factory utilization due to "feedstock quality issues and the accelerated closure of the company's Stickney facility". While closing Stickney is meant to save $15–20 million a year starting in 2027, the remaining plants still face a 3-to-6-month lag before selling prices catch up with coal tar costs.
What to watch: fourth-quarter division operating cash profit, the first full quarter after Stickney's target shutdown date. A reading that stays near $6 million would show that raw material inflation is eating the early closure savings.
Railroad Price Cuts Offset Utility Pole Gains
Railroad and Utility Products and Services treats wooden crossties for rail lines and power poles for electric utilities. Koppers has counted on utility pole demand and higher rail volumes to lift the division's earnings.
Reported sales were unchanged at $232.8 million; excluding $6.3 million from the railroad bridge services business sold last August, underlying sales rose 2.8% by our math. Domestic utility pole volume grew 5%, helped by the "acquisition of a western U.S. pole procurement business", and rail crosstie volumes also rose. Even so, operating cash profit fell 23.6% to $22.3 million.
Profit fell because major freight railroads extracted lower prices on Class I crossties, while raw material and overhead costs rose by $3.7 million and the sold business removed $0.6 million of profit. Volume growth cannot lift earnings when large rail customers force price concessions during a period of rising wood and operating costs.
What to watch: the division's profit margin in the first quarter of 2027, after Koppers finishes idling its Florence, South Carolina treating plant. Continued margin compression below 10% would show rail price concessions are outweighing plant consolidation.
Risks This Quarter Didn't Answer
The earnings release did not include the quarterly filing or conference call remarks, leaving three standing risks without an update this quarter.
- 2027 copper price pass-through: how much of the roughly $50 million price increase needed in wood preservatives as copper hedges expire has been accepted by customers; the conference call Q&A will test this.
- Illinois Attorney General complaint at Stickney: whether permit-violation penalty terms or closure conditions changed; the quarterly filing's legal footnote will show any update.
- Utility pole revenue and profit split: standalone utility pole sales growth and margins versus railroad ties inside the combined division; the filing's product-line table will disclose sales.
💲 Other KPIs
Accounts receivable — money customers owe for delivered goods — rose 6.1% from a year ago and $45.2 million since December, growing more than twice as fast as third-quarter sales (+2.8%). That build absorbed $46.7 million of operating cash flow over the first nine months of the year.
Inventories fell 3.2% from a year ago and $23.9 million from the end of 2025, though they ticked up $1.6 million from the second quarter. Working down stockpiles released $18.9 million of cash over the first nine months, helping Koppers hold its operating cash flow plan despite lower profit.
The diluted share count fell 2.7% from a year ago after Koppers spent $51.0 million on share buybacks in the first nine months. By our math, buybacks slowed to $7.1 million in the third quarter from $14.9 million in the second and $29.0 million in the first, as the company prioritized paying down debt.
🔮 Guidance
Cut. Management dropped the top half of its prior range, leaving full-year sales up 1.1% from $1,879.3 million in 2025 by our math. After $1,474.5 million in the first nine months, the plan implies fourth-quarter sales of about $425.5 million, down 1.7% from a year ago after two quarters of growth.
Cut. The middle of the range fell by $22.5 million to $222.5 million, or 13.3% below 2025. It is the third cut in three quarters, and the largest yet: −$10.0 million, −$5.0 million, and now −$22.5 million. By our math, the outlook leaves $44.2 million for the fourth quarter at the middle of the range, down 16.9% from a year ago.
Cut. The middle of the range dropped 82.5 cents to $3.175, a 22.0% decline from $4.07 in 2025. It is the third straight reduction following cuts of 40 cents in the first quarter and 20 cents in the second. By our math, that leaves 47.5 cents for the fourth quarter at the middle of the range, down 32.1% from 70 cents a year ago.
Raised. The expected tax rate on profit excluding one-offs moved up 3 percentage points to 31%, matching where the rate finished in the third quarter of 2025 after starting that year at a 28% forecast. The higher tax rate adds to the cut in full-year profit per share.
Unchanged. The middle of the range stays at $175.0 million, up 42.9% from $122.5 million in 2025, as inventory reductions and payment timing offset lower earnings. By our math, the middle of the range leaves $48.1 million for the fourth quarter, up 6.7% from $45.1 million a year ago.
Cut. Planned capital spending fell by $5 million, or 9.1% below the $55 million spent in 2025, after Koppers spent $34.9 million across the first nine months. By our math, that leaves $15.1 million of capital spending for the fourth quarter.
Raised. The middle of the range moved up $5 million to $125.0 million, nearly double the $67.5 million generated in 2025, driven entirely by the $5 million reduction in capital spending. By our math, that leaves $33.0 million for the fourth quarter at the middle of the range, up 15.8% from $28.5 million a year ago.
❓ Key Questions
How much 2027 copper inflation have customers agreed to pay?
Wood preservative margins held at 18.3% with help from copper hedges, which absorbed part of a $4.7 million raw material increase. As hedges roll off in 2027, Koppers previously estimated it needs roughly $50 million in price increases to protect margins.
Why did Class I railroad crosstie prices fall as volumes rose?
Railroad and Utility Products profit dropped 23.6% primarily because of lower prices on Class I crossties. Investors need to know whether these price concessions are locked into multi-year rail contracts or reflect temporary mix shifts.
Did Stickney distillation end on September 30 as planned?
The release mentions the accelerated closure of Stickney hurt third-quarter utilization, but does not confirm whether all distillation ceased on September 30 or disclose any financial terms from the Illinois Attorney General's air-permit complaint.
How much of the nine-month cash record comes from delayed vendor payments?
Accounts payable rose $31.1 million since December, contributing $32.9 million to nine-month operating cash flow. Last quarter's filing showed past-due payables had tripled to 15% of the total, raising the risk of a fourth-quarter or 2027 cash outflow.