Lennox International (LII): financials, SEC filings and peers

Lennox International (LII) is a building products company in the Industrials sector of the S&P 500, headquartered in Richardson, Texas.

It was founded in 1895 and joined the S&P 500 on December 23, 2024.

Its fiscal year ends in December, and its shares trade on the NYSE.

In its SEC filings it is classified as “Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip”.

Lennox International at a glance

Revenue (12 months): $5.3B
Revenue growth: -2.0%
Operating margin: 19.7%
Net income (12 months): $794M
Free cash flow (12 months): $661M
Cash: $48M
Debt: $1.5B
Diluted EPS (12 months): $22.51

Twelve months to March 31, 2026, from the 10-Q filed April 29, 2026.

Latest twelve months

Over the twelve months to March 31, 2026, Lennox International reported revenue of $5.3 billion, down 2.0% from $5.4 billion a year earlier.

Its operating margin was 19.7%: for every $100 of sales, about $20 was left as operating profit.

Net income was $794 million (15.1% of revenue), 2.8% lower than a year earlier.

Operating cash flow was $810 million and capital spending $149 million, leaving free cash flow of $661 million (12.6% of revenue).

At the end of the period it held $48 million in cash and $1.5 billion in debt, a net debt position of $1.5 billion.

The diluted share count fell 2.0% in a year, typically the result of buybacks.

Five-year trend

Revenue went from $3.6 billion in fiscal 2020 to $5.2 billion in fiscal 2025, about 7.4% a year.
Operating margin widened from 13.2% to 20.0% over the same years.
Free cash flow was positive in each of the last 6 fiscal years.

Fiscal year	2021	2022	2023	2024	2025
Revenue	$4.2B	$4.7B	$5.0B	$5.3B	$5.2B
Revenue growth	15.4%	12.5%	5.6%	7.2%	-2.7%
Operating margin	14.1%	13.9%	15.9%	19.5%	20.0%
Net income	$464M	$497M	$591M	$811M	$806M
Free cash flow	$409M	$201M	$486M	$782M	$639M
Diluted EPS	$12.39	$13.88	$16.58	$22.66	$22.79

Fiscal years as reported in Lennox International’s 10-K filings. Free cash flow is operating cash flow minus capital spending.

Recent SEC filings

8-K filed September 18, 2026 — Executive or director change
10-Q filed July 29, 2026 — quarterly report
8-K filed July 29, 2026 — Earnings results
8-K filed May 28, 2026 — Executive or director change; Shareholder vote results
10-Q filed April 29, 2026 — quarterly report
8-K filed April 29, 2026 — Earnings results
10-K filed February 17, 2026 — annual report
8-K filed January 28, 2026 — Earnings results

All Lennox International filings on SEC EDGAR

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Questions about Lennox International

Is Lennox International's revenue growing?

No. Revenue for the twelve months to March 31, 2026 was $5.3 billion, down 2.0% from a year earlier, according to its SEC filings.

Is Lennox International profitable?

Yes. It earned $794 million in net income over the twelve months to March 31, 2026, a net margin of 15.1%.

Does Lennox International have more cash or more debt?

At March 31, 2026 it had $48 million in cash and $1.5 billion in debt, so more debt than cash.

When did Lennox International last file financial results?

Its latest quarterly report (10-Q) was filed with the SEC on July 29, 2026.

Which companies are similar to Lennox International?

In the S&P 500, Lennox International is grouped in Building Products within the Industrials sector. Allegion (ALLE), A. O. Smith (AOS), Carrier Global (CARR), Johnson Controls (JCI), Masco (MAS) are in the same group.

Understand the numbers

Source: Lennox International’s filings with the U.S. Securities and Exchange Commission (EDGAR), retrieved September 27, 2026. Figures are as reported by the company and may be restated. This page is for information only and is not financial advice.