MOSBy Calypso Research7 min read

The Mosaic Company (MOS) Q4 2025 Earnings Analysis

Stripped Down: Mosaic's Revenue Takes a Sulfuric Hit at $2.6B

Key Takeaways

The Mosaic Company (MOS) reported Q4 2025 earnings with revenue of $2.6B, representing a -7.5% year-over-year change. The stock moved -4.1% on earnings day.

The bull case: Improving phosphate operations, structural cost reductions, strong potash markets, and the ability to pivot tonnes into subsidized international phosphate demand drive margin recovery, working capital release, and a return to higher shareholder payouts from 2026 onward.

The bear case: Persistently high sulfur costs, fragile U.S. phosphate demand, Brazil credit and margin headwinds, and elevated 2026 capital intensity could keep cash generation and returns below expectations, limiting upside to earnings and delaying meaningful capital returns to shareholders.

Financial Highlights

  • Revenue: $2.6B (-7.5% YoY)
  • Gross Profit: $369M (14.2% margin, +3.5% YoY)
  • Operating Income: $236M (9.0% margin, +5.5% YoY)
  • Net Income: $162M
  • TTM Revenue: $11.7B

Stock Performance

  • Earnings Day Move: -4.1%
  • Year-to-Date: +9.2%
  • 1-Year Return: +7.1%
  • vs. S&P 500 (since earnings): +16.3%
  • vs. Nasdaq (since earnings): +18.5%

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What Management Said

Here are the key debates and direct quotes from The Mosaic Company's Q4 2025 earnings call:

Phosphate Stripping Margins, Sulfur Shock, and Farmer Affordability

Sentiment: Mixed

"I don't know that we'll be able to pass through as much as maybe historically in a tight market given the affordability issues. But we do see, at least for us, anything above a stripping margin above $300, we still see very constructive being in the middle of the cost curve." — Bruce Bodine
"Compared with the prior year first quarter, we thus expect a roughly $250 million headwind to Q1 '26 EBITDA... in a normalized world at a $400 3P margin, we should be making $150 per tonne approximately." — Luciano Pires

Phosphate Production Recovery vs. Prior 8Mt Target and Cost Normalization

Sentiment: Positive

"We are off to a strong start this year, and we expect to produce at least 7 million tonnes of phosphate in 2026... we remain confident in our ultimate objective we talked about in Analyst Day, both on volume and cost." — Bruce Bodine
"The $112 per tonne in phosphates is where it should be given the current production volumes... every 100,000 tonnes per quarter should represent kind of a $7 to $8 decline... so the path from 1.7 to 2.0 would imply kind of between $20 and $25 per tonne decline over current levels of phosphate conversion costs." — Luciano Pires

Brazil Mosaic Fertilizantes: Volumes, Credit Risk, and Profitability Under High Sulfur

Sentiment: Mixed

"For 2026, we foresee this is going to be a challenging year as we go through this process... overall market is likely going to be flat and our own distribution volume, we will make a prudent decision... We are not going to take credit risk, and we're not going to compete in the market where the business quality is not really good." — Jenny Wang
"Because of high sulfur prices, we actually curtailed production... and with all of that, still the business generated almost $50 million on EBITDA. And so that would be, I would say, a phenomenal performance for the set of circumstances that we faced." — Luciano Pires

Elevated 2026 CapEx, Waste‑Stack Projects, and Long‑Term Capital Intensity

Sentiment: Mixed

"We expect CapEx in 2026 to come in around $1.5 billion, higher than 2025 due to mine, gyp stack and clay settling area expansions in Florida... the $1.5 billion that we've said is, I would say, is really the ceiling. We probably see that as a worst-case outcome." — Bruce Bodine
"Taken together... total cash outlays for CapEx, ARO and environmental reserves are expected to be modestly higher than the prior year... We continue to see opportunities to reduce CapEx towards $1 billion by the end of the decade with ARO and environmental reserves steadily edging down to approximately $200 million." — Luciano Pires

Working Capital Drag, Debt Build, and Timeline to Resume Shareholder Returns

Sentiment: Mixed

"Working capital reduced cash flow by $960 million for the year and contributed to an $829 million increase in net debt... we believe a $300 million to $500 million working capital release is highly possible, supporting meaningfully higher cash flow generation in 2026." — Luciano Pires
"Overall, we expect to generate free cash flow after CapEx and other cash spend above the minimum dividend in 2026. This will allow us to prioritize debt reduction and subsequently pave the way to resume extraordinary returns to shareholders." — Luciano Pires

Bull Case

Improving phosphate operations, structural cost reductions, strong potash markets, and the ability to pivot tonnes into subsidized international phosphate demand drive margin recovery, working capital release, and a return to higher shareholder payouts from 2026 onward.

Bear Case

Persistently high sulfur costs, fragile U.S. phosphate demand, Brazil credit and margin headwinds, and elevated 2026 capital intensity could keep cash generation and returns below expectations, limiting upside to earnings and delaying meaningful capital returns to shareholders.

Looking Ahead

With revenue declining -7.5% year-over-year, investors will be watching for signs of a turnaround at The Mosaic Company, particularly around phosphate Stripping Margins, Sulfur Shock, and Farmer Affordability. With operating margins at 9.0%, margin trends will remain a focal point. The market's negative earnings-day reaction signals that investors need to see stronger execution, and the next earnings report will be a key catalyst for the stock.

Frequently Asked Questions

What was The Mosaic Company's revenue in Q4 2025?

The Mosaic Company reported Q4 2025 revenue of $2.6B, representing a -7.5% year-over-year change.

Did The Mosaic Company beat earnings expectations in Q4 2025?

The stock declined -4.1% on earnings day, suggesting the results fell short of market expectations. The current bull case centers on: Improving phosphate operations, structural cost reductions, strong potash markets, and the ability to pivot tonnes into subsidized international phosphate demand drive margin recovery, working capital release, and a return to higher shareholder payouts from 2026 onward.

What is the bull case for MOS stock?

The bull case for MOS centers on: Improving phosphate operations, structural cost reductions, strong potash markets, and the ability to pivot tonnes into subsidized international phosphate demand drive margin recovery, working capital release, and a return to higher shareholder payouts from 2026 onward.

What is the bear case for MOS stock?

The bear case for MOS centers on: Persistently high sulfur costs, fragile U.S. phosphate demand, Brazil credit and margin headwinds, and elevated 2026 capital intensity could keep cash generation and returns below expectations, limiting upside to earnings and delaying meaningful capital returns to shareholders.

How has MOS stock performed since its Q4 2025 earnings?

MOS moved -4.1% on the day of its Q4 2025 earnings report, outperforming the S&P 500 by +16.3% since earnings. Year-to-date, the stock has returned +9.2%.

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