Constellium SE (CSTM) Earnings: Q3 2026 Results

The quarter ended September 30, 2026 and Constellium published the results on October 28, 2026. Revenue and diluted EPS are shown against Q3 2025, the same quarter a year earlier, which takes seasonal swings out of the comparison.

• Constellium is a French company (Constellium SE) that files 10-Q and 10-K reports with the SEC. Net income and EPS here are attributable to equity holders of Constellium SE; group net income including non-controlling interests was $119 million.
• Segment revenue is shown before inter-segment eliminations, as Constellium reports it. The rows add to $2,638 million against reported revenue of $2,639 million because of rounding.

Source: Constellium Q3 2026 results, October 28, 2026. Also in the Form 10-Q for the quarter ended September 30, 2026. Figures as reported; checked against the release on November 10, 2026.

How Constellium splits revenue in its own release, under its own labels, for Q3 2026 against Q3 2025. Indented lines are parts of the line above them.

• Constellium's Aerospace & Transportation (A&T) revenue was $664 million in Q3 2026, up 38% from $481 million in Q3 2025, 25% of total revenue.
• Constellium's Packaging & Automotive Rolled Products (P&ARP) revenue was $1.6 billion in Q3 2026, up 24% from $1.3 billion in Q3 2025, 62% of total revenue.
• Constellium's Automotive Structures & Industry (AS&I) revenue was $402 million in Q3 2026, down 2% from $409 million in Q3 2025, 15% of total revenue.
• Constellium's Holdings and Corporate revenue was $2.0 million in Q3 2026, up 100% from $1.0 million in Q3 2025, under 1% of total revenue.

Segment lines are the figures writers cite most often, because they show where the growth in a quarter came from. Companies redraw their segments from time to time and restate the prior year to match, so a year-ago figure here can differ from the one printed a year ago. When that has happened, the note above says so.

From the earnings release

In its Q3 2026 release, Constellium said:

“Based on our current outlook, we are raising our guidance for 2026 and now expect Adjusted EBITDA in the range of $1.03 billion to $1.06 billion, excluding the non-cash impact of metal price lag, and Free Cash Flow in excess of $300 million.”

Source: Constellium Q3 2026 release, Oct 28, 2026.

This is the company's own guidance as of Oct 28, 2026, quoted as given. Walnut does not make forecasts of its own. Analyst estimates for the coming quarters are on the CSTM forecast page.

Revenue and diluted EPS for the last 5 quarters. Each date links to that quarter's release.

Revenue and diluted EPS attributable to equity holders of Constellium, each as first reported in that quarter's release.

We do not hold a confirmed date for Constellium's next report. Companies post the date on their investor relations site a few weeks ahead, usually with the time of the conference call.

Each quarter keeps its own page with the figures as reported, so a link to one stays pointed at the same numbers after the next report.

• Q3 2026 (this page), reported Oct 28, 2026

Constellium's revenue was $2,639 million in Q3 2026, up 22% from $2,166 million, on shipments of 368 thousand metric tons, down 1%. Constellium attributes the increase to higher revenue per ton, including higher metal prices, partially offset by lower shipments. Aluminum prices pass through to revenue, so revenue moves with metal prices as well as volume. (Constellium Q3 2026 release, Oct 28, 2026)

Packaging & Automotive Rolled Products is the largest segment, with $1,625 million of revenue on 266 thousand metric tons, up 24% in revenue while shipments fell 3%. Fewer packaging rolled products shipments were partly offset by more automotive rolled products, which benefited from supply shortages in North America. (Constellium Q3 2026 release, Oct 28, 2026)

Aerospace & Transportation revenue rose 38% to $664 million as shipments rose 18% to 59 thousand metric tons, on higher shipments of aerospace and transportation, industry and defense (TID) rolled products. Automotive Structures & Industry revenue fell 2% to $402 million on 46 thousand metric tons. (Constellium Q3 2026 release, Oct 28, 2026)

By product line, packaging rolled products brought in $1,187 million, automotive rolled products $407 million, aerospace rolled products $329 million, transportation, industry, defense and other rolled products $298 million, automotive extruded products $241 million and other extruded products $149 million. (Constellium Form 10-Q, Q3 2026, Oct 28, 2026)

Constellium's 10 largest customers represented approximately 56% of revenue in 2025. Its rolling mills include Neuf-Brisach in France and Muscle Shoals, Alabama, the two plants the release credits with favorable metal costs in P&ARP. (Constellium Form 10-K, 2025, Feb 25, 2026; Constellium Q3 2026 release, Oct 28, 2026)

Constellium's diluted EPS was $0.84, against $0.62 a year earlier, on net income attributable to equity holders of $117 million against $88 million. Constellium does not publish an adjusted EPS. Its main non-GAAP measure is Adjusted EBITDA, $276 million against $235 million, which excludes items such as unrealized gains and losses on derivatives, share based compensation and restructuring. (Constellium Q3 2026 release, Oct 28, 2026)

Metal price lag, the non-cash timing effect between when aluminum prices are set in revenue and in cost of sales, was negative $4 million in the quarter against positive $39 million a year earlier, as primary aluminum prices fell during the quarter. Constellium reports Adjusted EBITDA including it and guides excluding it. Income tax expense was $41 million on income before tax of $160 million. (Constellium Q3 2026 release, Oct 28, 2026)

Diluted weighted average shares fell to 138,987 thousand from 140,525 thousand. Constellium repurchased 1.0 million ordinary shares for $30 million in the quarter, and 2.8 million for $78 million in the first nine months. (Constellium Q3 2026 release, Oct 28, 2026)

Diluted EPS divides net income by the weighted average number of shares outstanding in the quarter, plus the shares that options and other equity awards could add. Buybacks shrink that count and lift EPS for the same profit; share issuance and stock awards enlarge it.

Constellium gives a full-year outlook in its release, for Adjusted EBITDA and Free Cash Flow only. In Q3 2026 it raised the 2026 range to Adjusted EBITDA of $1.03 billion to $1.06 billion, excluding the non-cash impact of metal price lag, and Free Cash Flow in excess of $300 million. (Constellium Q3 2026 release, Oct 28, 2026)

Constellium does not reconcile that guidance to net income, because it cannot forecast derivative gains and losses, metal price lag, impairment or restructuring charges, or taxes. It gives no revenue or EPS outlook. (Constellium Q3 2026 release, Oct 28, 2026)

A consensus figure is the average of the models published by the analysts who cover Constellium, collected by a data provider and revised up to the day of the report. A quarter that lands above it says how expectations were set as much as how the business did, and the share price on the day also reflects the guidance and the lines no consensus covers.

The consensus figures on this page are Yahoo Finance's, as pulled on the date shown. Each comes with the number of analysts behind it; the smaller that number, the more one revised estimate can move the average.

The figures below are the ones Constellium's own release and filings put weight on for Q3 2026, with the latest reported value for each.

What the quarter means for a holding is a separate question from what it reported. The case for and against owning CSTM is on is CSTM a buy or a sell?, what analysts expect next is on the CSTM forecast, and what the company does is on the Constellium SE (CSTM) stock page.

Every number on this page can be traced to a document Constellium published. Checking one takes a couple of minutes, and it is worth doing before you quote a figure anywhere.

• The results release is the document linked in the source line above. Companies publish it on their investor relations site at the moment results go out, and it carries the headline tables: revenue, operating income, net income and EPS for the quarter and the year-ago quarter.
• The same release is filed with the SEC as Exhibit 99.1 to a Form 8-K under Item 2.02, usually on the day of the report. The SEC copy does not change after the fact, which makes it the safer thing to link when you cite a number.
• The quarterly report (Form 10-Q) follows within a few weeks and carries the full financial statements, the segment note and management's discussion of what changed. The fourth quarter is covered by the annual report (Form 10-K) instead.
• Restated comparisons are flagged in the notes on this page. When a company redraws its segments or changes how it adjusts EPS, it restates the year-ago column, so the year-ago figure in a new release can differ from the one printed a year ago. This page always uses the comparison in the newer release, because that is the like-for-like one.

A walk-through of every line in a release, with what each one tells you, is in how to read an earnings report.