The Mosaic Company (MOS) - Deep Dive Research Report

Report date: May 13, 2026

1. What the Company Does

The Mosaic Company mines rocks and turns them into fertilizer. Specifically, it extracts phosphate rock from the ground in Florida and Brazil, and potash (potassium chloride) from underground deposits in Saskatchewan, Canada. It then processes these raw minerals into crop nutrients that farmers spread on fields to grow food. Without phosphate and potash, modern agriculture does not work - these are two of the three essential macronutrients (nitrogen being the third, which Mosaic does not produce) that every crop on earth requires.

The company was formed on October 22, 2004, through the merger of two legacy businesses: IMC Global, a fertilizer company founded in 1909 as International Agricultural Corporation, and Cargill's crop nutrition division, which Cargill had built starting in the 1960s when it needed product to fill empty barges on return trips from grain deliveries. IMC Global brought massive phosphate and potash reserves but was drowning in debt from late-1990s commodity downturns. Cargill brought operational discipline, global distribution reach, and a clean balance sheet. The name "Mosaic" was chosen in June 2004 to represent the combination of diverse elements into a single entity.

The core value proposition is straightforward: Mosaic controls scarce, non-substitutable mineral deposits and operates the processing infrastructure to convert them into standardized fertilizer products that the world's farmers need every planting season. Phosphate rock is not found everywhere - economically viable deposits exist in only a handful of countries (Morocco, China, the United States, Russia, and a few others). Potash deposits are even more geographically concentrated, primarily in Canada, Russia, and Belarus. Owning these deposits and the chemical plants that process them is the business.

Here is how the phosphate process actually works: Mosaic mines phosphate rock from open-pit dragline operations in Florida's Bone Valley region (the Peace River basin in Polk and Hillsborough counties). The rock is a sedimentary deposit containing calcium phosphate. Once mined, the rock is beneficiated (crushed, washed, and separated from clay and sand), then shipped to chemical plants where it is reacted with sulfuric acid to produce phosphoric acid. Phosphoric acid is the intermediate product - it is then reacted with ammonia to produce diammonium phosphate (DAP) or monoammonium phosphate (MAP), the finished fertilizer products that are shipped to farmers. This chemical process generates phosphogypsum as a byproduct - a mildly radioactive calcium sulfate that must be stacked in enormous piles called "gypstacks" that can reach 500 feet tall. Managing these gypstacks is a permanent environmental obligation.

For potash, the process is different. At Esterhazy in Saskatchewan, Mosaic operates the world's largest potash mine, where potash ore sits roughly 1,000 meters underground in evaporite deposits left by ancient seas. The ore is brought to surface by hoists, then processed through flotation and crystallization to produce potassium chloride (MOP - muriate of potash). At Belle Plaine, also in Saskatchewan, Mosaic operates a solution mine where hot water is injected underground to dissolve the potash, and the brine is pumped to surface and evaporated.

The company is headquartered in Tampa, Florida, and is the largest U.S. producer of both concentrated phosphate and potash fertilizers.

2. Business Segments

Mosaic operates through three reportable segments: Phosphate, Potash, and Mosaic Fertilizantes. Each has distinct geology, geography, economics, and competitive dynamics.

2.1 Phosphate

The Phosphate segment mines phosphate rock in Florida and processes it into phosphoric acid and finished phosphate fertilizers (primarily DAP and MAP) at chemical plants in Florida and Louisiana. It also produces animal feed ingredients (defluorinated phosphate and dicalcium phosphate) and, increasingly, purified phosphoric acid for industrial applications including lithium iron phosphate (LFP) battery production.

Mosaic accounts for approximately 72% of estimated North American annual production of concentrated phosphate crop nutrients and roughly 10% of estimated global annual phosphate production. This dominant domestic position exists because phosphate rock deposits in the southeastern United States are geologically finite and increasingly depleted - no new entrants can replicate decades of permitted mining leases and processing infrastructure.

The core capability here is integrated mine-to-product manufacturing at scale. Mosaic operates multiple facilities across Florida (Bartow, New Wales, Riverview, South Pierce) and Louisiana (Uncle Sam and Faustina in St. James Parish). The Florida mines provide rock; the Louisiana plants provide additional processing capacity using rock shipped by barge. The entire system depends on three critical inputs: phosphate rock (owned), sulfuric acid (made from sulfur, partially sourced externally), and ammonia (partially produced internally, partially purchased). When sulfur or ammonia prices spike - as they did dramatically in early 2026 - the economics of the entire segment compress.

This is the margin engine in good times and the vulnerability in bad times. Phosphate "stripping margins" (the spread between finished product prices and raw material costs) are the single most important profitability metric for Mosaic. In Q1 2026, stripping margins were near $400 per ton - healthy but under pressure from sulfur costs that CEO Bruce Bodine described as reaching $1,200 per ton, a level at which "much, if not all, of the producer cost curve is underwater."

The segment also includes Mosaic's Riverview micronutrient facility ("The Mighty Micro"), which produces specialty micronutrient products, and the company's emerging purified phosphoric acid (PPA) capability for LFP battery supply chains - a potential new industrial demand driver.

Revenue contribution: approximately 35-40% of consolidated net sales.

2.2 Potash

The Potash segment produces potassium chloride (MOP) from three mining operations in Saskatchewan, Canada: Esterhazy (conventional underground mine, the world's largest), Belle Plaine (solution mine), and Colonsay (conventional mine, higher cost). In April 2026, Mosaic completed the sale of its Carlsbad, New Mexico potash mine to International Minerals for $30 million, concentrating all potash production in Saskatchewan.

Mosaic accounts for approximately 34% of estimated North American annual potash production and roughly 12% of estimated global annual potash production. International potash sales outside North America are handled through Canpotex, the joint marketing organization shared by Saskatchewan producers (Mosaic and Nutrien), which manages export logistics, pricing, and customer relationships.

The core capability is the Esterhazy K3 mine. After nearly $3 billion in investment over a decade, K3 replaced the aging K1 and K2 shafts that were plagued by brine inflows. K3's hoists can lift over 21 million tonnes of ore per year. The mine is now the lowest-cost conventional potash operation in Saskatchewan, and the HydroFloat recovery technology being installed adds an incremental 400,000 tonnes of annual capacity by improving ore recovery from the flotation process. K3 is a genuine competitive advantage - it will produce potash at industry-leading costs for decades.

Belle Plaine is a solution mine that benefits from low-cost natural gas for evaporation. Colonsay is the swing asset - higher cost, brought online or idled depending on market demand.

Potash is the cash cow. Production costs are structurally low ($71 per ton cash cost in Q3 2025, trending lower as K3 ramps and HydroFloat delivers), and potash prices have been rising on tight global supply. Management guided for approximately 9 million tons of production in 2026 at near-record operating rates.

Revenue contribution: approximately 25-30% of consolidated net sales.

2.3 Mosaic Fertilizantes

Mosaic Fertilizantes is the Brazilian business - a fully integrated phosphate and potash production, blending, distribution, and retail operation that serves the world's fourth-largest fertilizer-consuming country. Brazil imports roughly 85% of its NPK nutrient needs, making it structurally dependent on both domestic production and imports.

Mosaic is the leading fertilizer production and distribution company in Brazil, accounting for approximately 70-80% of estimated annual Brazilian concentrated phosphate production and 100% of estimated annual potash production. The segment owns five phosphate rock mines, four chemical plants, ten blending facilities, port terminals, and warehouses across Brazil, plus one blending plant and port in Paraguay.

This segment exists as a separate entity because it was built through acquisition - Mosaic acquired Vale Fertilizantes in 2018 for $2.5 billion, gaining the integrated Brazilian platform. The competitive dynamics are entirely different from North America: Brazil's fertilizer market is fragmented, credit-sensitive, and seasonal (the safra and safrinha planting seasons drive demand timing). Distribution margins are thin ($20 per ton vs. a target of $30-40), and the segment has been going through a painful rationalization process.

Management has been actively divesting non-core Brazilian assets: Taquari potash mine (sold for $27 million in 2025), Patos de Minas phosphate operations (sold for $111 million in late 2025), idling of SSP production at Araxa, and shutting mining at Patrocinio. A new blending unit at Palmeirante in Northern Brazil (R$400 million investment) opened in mid-2025 to serve expanding agricultural frontier regions.

Mosaic Fertilizantes is the strategic bet on Brazilian agriculture. The country is the world's breadbasket for soybeans, corn, sugar, and coffee, and its agricultural land is expanding northward into the Cerrado and Matopiba regions. The distribution network - warehouses, ports, blending plants, and relationships with cooperatives and large farmers - is extremely difficult to replicate.

Revenue contribution: approximately 30-35% of consolidated net sales.

Segment Comparison

3. Products and Business Detail

Phosphate Products

DAP (Diammonium Phosphate) - The flagship product. Contains 18% nitrogen and 46% phosphorus (18-46-0). The most widely traded phosphate fertilizer globally. Mosaic's DAP is sold to distributors and cooperatives across North America and exported to Latin America, India, and other markets.

MAP (Monoammonium Phosphate) - Contains 11% nitrogen and 52% phosphorus (11-52-0). Preferred in some markets for its higher phosphorus content and compatibility with blending operations. Used both as a direct-application fertilizer and as a blending feedstock.

MicroEssentials - Mosaic's premium branded product line, combining phosphate with sulfur and zinc in a single granule. Patented technology that delivers nutrients more efficiently to the root zone. Higher margin than commodity DAP/MAP. Produced at Riverview ("The Mighty Micro" expansion completed).

Animal Feed Phosphates - Defluorinated phosphate (DFP) and dicalcium phosphate (DCP) used in animal nutrition. Smaller volume but steady demand.

Purified Phosphoric Acid (PPA) - An emerging product line targeting industrial applications, particularly LFP battery manufacturing. Mosaic has been developing PPA capability at its Louisiana facilities, positioning for the expected onshoring of battery supply chains in North America.

SSP (Single Super Phosphate) - Lower-analysis phosphate fertilizer produced primarily in Brazil. Mosaic has been scaling back SSP production (idling Araxa), as it is lower margin and faces import competition.

Potash Products

MOP (Muriate of Potash / Potassium Chloride) - The primary product, sold in standard (coarse) and granular grades. Standard grade is used for direct application and blending; granular is premium-priced for precision agriculture. Red and white MOP variants depending on the processing method.

K-Mag (Langbeinite) - A specialty product containing potassium, magnesium, and sulfur. Previously produced at Carlsbad, New Mexico. The K-Mag and Dynamate brands were transferred to International Minerals as part of the Carlsbad divestiture.

Industrial Potash - Smaller volumes sold for water treatment, food processing, and other industrial applications.

Mosaic Biosciences Products

A new and rapidly growing product platform launched from Plant Response Inc. (acquired and rebranded):

BioPath - Biological fertilizer containing plant growth-promoting rhizobacteria (PGPR) that increase nutrient availability and uptake in the soil.

PowerCoat - Seed treatment biological that enhances early root development and nutrient utilization.

Mosaic Biosciences achieved $68 million in net sales in 2025 (doubled from prior year), has 60+ product registrations across 16 countries, and plans 8-10 new product launches in 2026. Management expects revenues to double again. In May 2026, Mosaic invested £2.5 million in Oxford spinout SugaROx to commercialize a precision biostimulant based on trehalose-6-phosphate technology.

Manufacturing Footprint

Florida phosphate mines: Open-pit dragline operations in Polk and Hillsborough counties. Phosphate rock is beneficiated on-site and shipped to chemical plants.

Florida chemical plants: Bartow, New Wales, Riverview, South Pierce, Mulberry - produce phosphoric acid and finished fertilizers. Riverview includes the MicroEssentials and micronutrient facilities.

Louisiana chemical plants: Uncle Sam and Faustina (St. James Parish) - receive phosphate rock by barge from Florida, produce phosphoric acid and finished DAP/MAP.

Saskatchewan potash mines: Esterhazy K3 (conventional underground, world's largest), Belle Plaine (solution mine), Colonsay (conventional, swing capacity).

Brazil: Five phosphate rock mines, four chemical processing plants, ten blending facilities, port terminals at key agricultural logistics hubs, plus the new Palmeirante blending unit serving the northern frontier.

Geographic Sales Footprint

North America is the primary market for both phosphate and potash. International phosphate sales go to India, Brazil, and other importing nations. International potash sales are handled through Canpotex and go to China, India, Southeast Asia (driven by palm oil economics), and Brazil. The Fertilizantes segment serves Brazil and Paraguay exclusively.

Key Milestones

• 1909: IMC Global predecessor (International Agricultural Corporation) founded
• 1960s: Cargill enters crop nutrition business via barge backhaul opportunity
• 2004: Mosaic formed from IMC Global + Cargill crop nutrition merger
• 2011: Cargill distributed its remaining Mosaic shares, making Mosaic fully independent
• 2014: Joined MWSPC joint venture with Ma'aden and SABIC in Saudi Arabia
• 2015: $2 billion EPA settlement over hazardous waste handling
• 2018: Acquired Vale Fertilizantes for $2.5 billion, creating Mosaic Fertilizantes
• 2021-2024: Esterhazy K3 mine fully ramped, replacing K1/K2 shafts ($3 billion investment)
• 2024: Sold 25% MWSPC stake to Ma'aden for $1.5 billion in Ma'aden shares ($522 million gain)
• 2025-2026: Divested Carlsbad, Taquari, Patos de Minas; idled Araxa; launched Mosaic Biosciences growth platform; announced rare earth project with Rainbow Rare Earths

4. Customers

Mosaic's customers fall into three distinct categories, each with different buying dynamics:

Agricultural Distributors and Cooperatives (North America)

The primary buyer is not the farmer directly but rather agricultural retailers, cooperatives, and distributors who purchase bulk fertilizer from Mosaic, blend it to local soil requirements, and sell it to farmers. In the U.S., this includes companies like Nutrien's retail arm, CHS, Helena Chemical, and hundreds of regional cooperatives. The buying decision is made by procurement managers who are highly price-sensitive and comparison-shop across suppliers. Sales cycles are seasonal - spring application in the Northern Hemisphere drives the bulk of purchasing from January through May.

Switching costs for distributors are low in theory (fertilizer is a commodity) but moderate in practice. Mosaic's MicroEssentials branded products have some differentiation and loyalty. More importantly, logistics matter enormously - having product staged at the right warehouse at the right time is critical for a distributor serving farmers who need to apply within narrow agronomic windows. Mosaic's extensive terminal and warehouse network provides this reliability.

International Buyers

Mosaic sells phosphate to governments and large importers in India (through periodic tender processes), to trading houses in Southeast Asia, and to distributors in Latin America. Potash is sold internationally through Canpotex, which negotiates large contracts with state-owned importers (China's Sinofert, India's IPL) and private buyers.

These contracts are typically negotiated semi-annually or quarterly at benchmark prices. The Indian government's subsidy regime is a critical factor - it determines farmer affordability and therefore import volumes. Contract prices set with China often serve as global benchmarks.

Brazilian Farmers and Cooperatives

In Brazil, Mosaic Fertilizantes sells both through its own distribution network and through third-party cooperatives and retailers. Brazilian farmers - particularly large soybean and corn operators in Mato Grosso, Goias, and the expanding northern frontier - buy NPK blends customized for their soil conditions. The selling season is concentrated around the safra (main crop) and safrinha (second crop) planting windows.

Credit is a significant factor in Brazil. Farmers often buy fertilizer on credit terms backed by their crop, creating counterparty risk. In Q2 2025, Mosaic took $30 million in bad debt expense from a single customer (90% insured), illustrating this risk.

Customer Concentration

No single customer dominates Mosaic's revenue, which is dispersed across hundreds of agricultural distributors, cooperatives, government importers, and trading houses. This broad customer base is a strength - there is no single-customer dependency risk. However, sovereign buyers (India, China) have outsized influence on pricing through their tender and contracting mechanisms.

Contract Structures

The mix varies by segment. North American phosphate sales are largely spot or short-term contract business aligned to the planting season. International phosphate sales to India involve government-mediated tender processes with quarterly pricing. Canpotex potash contracts are negotiated semi-annually with major sovereign buyers. Brazilian sales include both spot and credit-backed purchases tied to crop financing cycles. The result is moderate revenue predictability - volumes are seasonal but broadly recurring; prices fluctuate with global commodity markets.

5. Competitive Landscape

Phosphate

The global phosphate market is an oligopoly controlled by a handful of players:

OCP Group (Morocco) - State-owned, controls roughly 28-31% of global phosphate market share. Has the world's largest phosphate rock reserves by far (Morocco holds an estimated 70%+ of global reserves). OCP is the lowest-cost producer globally due to its geological advantage and has been investing heavily in expansion. Mosaic cannot match OCP on cost; it wins on proximity to North American customers and reliability of supply.

Nutrien (Canada) - Mosaic's most direct competitor in North America. Nutrien produces phosphate from operations in Aurora, North Carolina. Smaller phosphate volumes than Mosaic but has the world's largest agricultural retail network (2,000+ locations). Nutrien competes on integrated retail-to-farm distribution that Mosaic lacks in North America.

PhosAgro (Russia) - Major global phosphate exporter, but subject to ongoing geopolitical risk and sanctions-related complications. Sanctions on Russian fertilizers have been nuanced (generally exempt for food security reasons) but create logistics and financing friction that has benefited Western producers like Mosaic.

Chinese Producers - China is the world's largest phosphate producer but has been restricting exports since 2021, diverting phosphoric acid into domestic LFP battery production. Chinese DAP/MAP/TSP exports declined by more than 1.5 million tons in 2025, and export restrictions were extended through at least August 2026. This supply withdrawal has structurally tightened the global market and supported prices.

Potash

Nutrien (Canada) - The world's largest potash producer by capacity, operating six mines in Saskatchewan. Nutrien and Mosaic together dominate North American supply and jointly export through Canpotex.

Belaruskali (Belarus) and Uralkali (Russia) - Together historically controlled roughly 40% of global potash supply. Sanctions on Belarus (since 2021) and complications with Russian exports have removed significant supply from the market, benefiting Canpotex producers.

K+S (Germany) - European potash producer, higher cost than Saskatchewan operations due to deeper mining and higher energy costs.

ICL Group (Israel) - Produces potash from the Dead Sea, also has specialty minerals business. Reported $6.8 billion in 2024 annual sales, with specialty businesses contributing approximately 70% of EBITDA.

Barriers to Entry

The barriers to entry in both phosphate and potash are exceptionally high:

• Geological scarcity: Economically viable phosphate and potash deposits are rare and geographically concentrated. You cannot enter this business without a deposit.
• Permitting timeline: A new phosphate mine in Florida requires 10-15+ years of environmental permitting. Potash mines in Saskatchewan require similar timelines and billions in capital.
• Capital intensity: Esterhazy K3 cost nearly $3 billion. A new greenfield phosphate operation would cost billions more.
• Processing infrastructure: Chemical plants, sulfuric acid plants, ammonia handling, port terminals - all require specialized engineering and decades of operational knowledge.
• Environmental obligations: Gypstack management, water treatment, mine reclamation - ongoing liabilities that only established operators with institutional knowledge can manage.

Competitor Comparison

Where Mosaic is Strong

• Dominant North American phosphate producer (72% share)
• World's largest potash mine (Esterhazy K3)
• Only integrated fertilizer producer and distributor in Brazil
• Broad global market access through both direct sales and Canpotex

Where Mosaic is Exposed

• No control over input costs (sulfur, ammonia) - price spikes destroy phosphate margins
• Florida phosphate reserves are finite and depleting; long-term reserve life is a strategic concern
• Brazil operations have underperformed cost and margin targets since the Vale Fertilizantes acquisition
• No nitrogen production, limiting ability to offer complete NPK solutions in North America

6. Industry

Demand Drivers

Fertilizer demand is driven by one fundamental reality: the world needs to feed a growing population on a shrinking base of arable land per capita. Every major crop - corn, soybeans, wheat, rice, palm oil, sugar - requires phosphate and potash to achieve economically viable yields. Unlike nitrogen (which can be fixed from atmospheric nitrogen), phosphate and potash must be mined from finite geological deposits.

Specific demand drivers include:

• Population growth and protein transition: Emerging market populations moving toward protein-rich diets require more grain per calorie (feed conversion for livestock). This amplifies fertilizer demand.
• Crop intensification: As arable land per capita shrinks due to urbanization, each hectare must produce more. This requires higher fertilizer application rates.
• Biofuel mandates: Government-mandated ethanol and biodiesel blending requirements increase corn and soybean acreage, directly driving fertilizer consumption.
• Soil nutrient depletion: After years of under-application (common during periods of poor farmer economics), soils become nutrient-deficient, requiring catch-up application.
• LFP battery demand (emerging): China's diversion of phosphoric acid into lithium iron phosphate battery production is a new industrial demand driver that is structurally reducing phosphate available for fertilizer, tightening the agricultural market.

Industry Size

The global phosphate fertilizer market was estimated at $71-78 billion in 2025-2026 (estimates vary by source), growing at a low-to-mid single-digit CAGR. Asia-Pacific dominates consumption with approximately 60% market share, driven by China and India. The global potash market is smaller, estimated at $25-30 billion, but benefits from tighter supply dynamics due to sanctions on Belarus and Russia.

Supply Chain Position

Mosaic sits at the upstream end of the agricultural supply chain - it mines raw minerals and produces intermediate and finished fertilizer products. Below Mosaic are distributors, retailers, cooperatives, and ultimately farmers. Above Mosaic in the value chain are sulfur suppliers (oil refineries, gas processors), ammonia producers (natural gas-dependent), and equipment/services providers.

Import Dynamics

Two critical import dynamics shape Mosaic's market:

1. China's phosphate export restrictions: China historically exported 8-10 million tons of phosphate fertilizer annually. Since 2021, the government has progressively restricted exports, diverting phosphoric acid to domestic LFP battery production. By 2026, Chinese phosphate exports have been restricted through at least August, removing millions of tons from the global market. This is structurally bullish for non-Chinese producers like Mosaic.

2. Belarus/Russia potash sanctions: Western sanctions on Belarus (Belaruskali) since 2021 and complications with Russian (Uralkali) exports have removed significant potash supply from traditional channels. While some product still flows through alternative routes, the net effect has been to shift market share toward Canpotex (Mosaic + Nutrien).

Regulation

Fertilizer production is heavily regulated:

• Environmental: Phosphate mining requires extensive permitting (Army Corps of Engineers, EPA, state agencies). Gypstack management is subject to EPA consent decrees - Mosaic paid nearly $2 billion in a 2015 settlement over hazardous waste handling at Florida and Louisiana facilities.
• Trade: Phosphate and potash are subject to tariffs and anti-dumping duties in various jurisdictions. U.S. tariff policy on imported fertilizers affects competitive dynamics.
• Subsidies: Indian fertilizer subsidies directly influence global phosphate demand and pricing. Changes in Indian subsidy policy can shift millions of tons of import demand.

Cyclicality

Fertilizer is a cyclical business layered on top of a secular growth trend. Demand cycles with crop prices (higher crop prices incentivize planting and fertilizer application), input cost cycles (sulfur, ammonia, natural gas), and inventory cycles (farmers and distributors build and draw down inventories based on price expectations). The commodity trough of 2019-2020 and the spike of 2022 (following the Russia-Ukraine conflict) illustrate the amplitude of these cycles.

Currently (May 2026), the industry is in an unusual position: underlying demand fundamentals are strong (tight supply from China restrictions and Belarus sanctions), but input cost spikes (sulfur at $1,200/ton) are compressing producer margins, forcing curtailments that further tighten supply. This creates a coiled-spring dynamic where prices must eventually rise enough to cover marginal producer costs, or supply will contract until they do.

7. Growth Triggers

• China phosphate export restrictions extended through August 2026, removing over 1.5 million tons annually from global supply and supporting phosphate prices. Management expects this to persist. (Q3 2025 concall, Nov 6 2025; reiterated Q1 2026 concall, May 11 2026)

• Global potash shipments expected to approach record levels in 2026, driven by broad-based demand across most key geographies. Canpotex announced it was fully committed through June and on pace for a record year. (Q4 2025 concall, Feb 25 2026; reiterated Q1 2026 concall, May 11 2026)

  "China imports set a record in the first quarter as the country replenishes low inventories." - Jenny Wang, EVP Commercial (Q1 2026 concall, May 11 2026)

• Esterhazy HydroFloat project expected to add 400,000 tonnes of annual MOP capacity by improving ore recovery. On track to complete by mid-2025 with ramp-up through end-2025. Costs expected to decline through 2026 as HydroFloat optimizes. (Q3 2025 concall, Nov 6 2025; Q4 2025 concall, Feb 25 2026)

• Mosaic Biosciences revenue expected to double again in 2026, with 8-10 new product launches planned. Already achieved $68 million in net sales in 2025 (doubled from prior year) and 60+ product registrations in 16 countries. (Q4 2025 concall, Feb 25 2026; Q1 2026 concall, May 11 2026)

• Rare earth elements project with Rainbow Rare Earths at Uberaba, Brazil - recovering rare earths from Mosaic's phosphogypsum stacks. Preliminary economic assessment completed; prefeasibility study underway with definitive feasibility study targeted for late 2026 and potential construction start in 2027. (Q1 2026 concall, May 11 2026)

• $100 million additional cost savings targeted in 2026, building on $150 million achieved ahead of schedule in 2025. Total $250 million target by end of 2026. Includes workforce reduction delivering $50 million annualized savings. (Q4 2025 concall, Feb 25 2026; Q1 2026 concall, May 11 2026)

• Working capital release of $300-500 million expected in 2026, reversing the $960 million cash absorption that occurred in 2025. Production curtailments expected to accelerate inventory releases. (Q4 2025 concall, Feb 25 2026; reiterated Q1 2026 concall, May 11 2026)

• CapEx declining trajectory: reduced by $250 million to $1.25 billion in 2026 (from $1.5 billion guidance), with management projecting further decline to $1 billion by 2030 as gypstack and clay settling area expansions complete. (Q1 2026 concall, May 11 2026)

• Purified phosphoric acid (PPA) for LFP battery supply chains - Mosaic is developing PPA capability at Louisiana facilities to supply the emerging North American battery manufacturing industry. Industrial phosphate demand from LFP production grew 40%+ in 2025. (Q3 2025 concall, Nov 6 2025)

8. Key Risks

Sulfur and Ammonia Price Volatility

This is the most immediate and dangerous risk. Phosphate production requires massive quantities of sulfur (to make sulfuric acid) and ammonia. In Q1 2026, marginal sulfur costs reached approximately $1,200 per ton and ammonia approximately $800 per ton - levels that CEO Bodine said put "much, if not all, of the producer cost curve underwater." Mosaic sources roughly 80% of its U.S. sulfur domestically and 80% of ammonia from internal production and contracted supply, but the remaining exposure to spot markets creates significant margin compression when geopolitical disruptions tighten global supply. The mechanism: every $10 increase in sulfur price compresses phosphate EBITDA by approximately $10 million per quarter. At current levels, this translates to hundreds of millions in annual margin erosion. High probability, high impact.

Phosphate Production Reliability

Mosaic's Florida phosphate complex has experienced persistent operational issues - equipment failures, extended turnarounds, gypsum pumping system installations, weather disruptions - that caused over 700,000 tonnes of lost production in 2024 alone. Management has acknowledged that workforce turnover over the past five years has created institutional knowledge gaps that affect operational decision-making. While production improved through 2025, Mosaic withdrew its 2026 phosphate production guidance after Q1 due to curtailments, signaling continued uncertainty. Moderate probability, high impact.

Florida Phosphate Reserve Depletion

Florida's Bone Valley phosphate deposits are finite. Existing permitted reserves are measured in decades, not centuries, and new mine permitting in Florida requires 10-15+ years and faces intense environmental opposition. At some point, the Florida deposits will be exhausted, and there is no equivalent domestic replacement. Low probability in the near term, existential in the long term.

Environmental and Regulatory Liability

Phosphate mining generates permanent environmental obligations. Gypstacks are radioactive and must be managed indefinitely. Historical incidents include the 2004 Riverview discharge (65 million gallons of radioactive wastewater into Hillsborough Bay) and the 2016 New Wales sinkhole (215 million gallons into the Floridian Aquifer). Mosaic paid nearly $2 billion in a 2015 EPA settlement. Current gypstack and clay settling area expansions are driving elevated CapEx. Low probability of catastrophic incident in any given year, but the tail risk is severe.

Brazilian Underperformance

The Mosaic Fertilizantes segment has struggled to deliver the margins expected when Mosaic acquired Vale Fertilizantes in 2018 for $2.5 billion. Distribution margins have run at approximately $20 per ton versus a target of $30-40. Credit risk in Brazil is elevated. The risk: Brazil continues to dilute consolidated returns, consuming management attention and capital without delivering commensurate profitability. High probability, moderate impact.

Geopolitical Supply Chain Disruption

"Nearly half of phosphate raw materials have been impacted by conflicts in Ukraine and Iran." - Management, Q1 2026 concall

While this tightens global supply (benefiting prices), it also creates acute input cost spikes for Mosaic. The risk is asymmetric: Mosaic benefits from supply-side tightness in finished product markets but suffers from supply-side tightness in input markets. Moderate probability, high impact.

Potash Price Normalization

Current potash pricing benefits from sanctions on Belarus and Russia. If geopolitical conditions change and sanctioned supply returns to the market, potash prices could correct significantly. Mosaic's potash segment has been the most profitable division, and a material price decline would impact consolidated earnings disproportionately. Low-to-moderate probability, high impact.

9. Walk the Talk

The four concalls used for this analysis are:

• Q2 2025: August 6, 2025
• Q3 2025: November 6, 2025
• Q4 2025: February 25, 2026
• Q1 2026: May 11, 2026

Q2 2025 - Setting the baseline. Management came into Q2 2025 emphasizing operational improvement and cost discipline. CEO Bruce Bodine said "Our work to improve asset reliability is paying off." Phosphate production guidance was set at 6.9-7.2 million tons for the full year, and potash guidance was raised to 9.3-9.5 million tons. The cost savings target was $150 million achieved, extended to $250 million by 2026. Mosaic Biosciences was highlighted as having "more than doubled" revenues in the first half. Management guided Q3 EBITDA "to be significantly higher" than Q2. However, the quarter itself disappointed - EPS missed by 29% and revenue missed by 4.75%. Extraordinary charges of $60 million, including $30 million in bad debt from a single customer, undermined the operational improvement narrative.

Q3 2025 - Delivery. Q3 was the quarter where management delivered. EPS beat by 9.5%, adjusted EBITDA reached $806 million (up 80% year-over-year), and all three segments performed. Phosphate production improved for three consecutive quarters, with trailing three-month production reaching 1.8 million tons. Potash costs dropped to $71 per ton. The Brazilian segment posted $241 million in EBITDA, exceeding the $200 million guidance. Bodine declared the company "well positioned for a strong finish to 2025 and a promising 2026 beyond." The Q3 EBITDA guidance given in Q2 ("significantly higher than Q2") was met. However, management also flagged rising caution, citing "very high uncertainties" in Q4 volumes and margins, and acknowledged working capital had absorbed over $400 million in the quarter.

Q4 2025 - Mixed signals. Q4 EPS missed expectations badly ($0.22 vs. $0.44 expected), but revenue beat by 8.7%. The full-year picture was messy: working capital consumed $960 million in 2025, and net debt rose $829 million. However, management hit the $150 million cost savings target and committed to another $100 million in 2026. They guided for "at least 7 million tons" of phosphate production in 2026 and "around 9 million tons" of potash. Sulfur costs were flagged as a major headwind. Mosaic Biosciences delivered on the doubling promise ($68 million net sales). The Carlsbad divestiture and Brazilian asset sales demonstrated portfolio rationalization. CFO Luciano Siani Pires noted working capital would reverse meaningfully in 2026, guiding $300-500 million in releases.

Q1 2026 - The correction. This is where management credibility was most tested. EPS came in at $0.05 versus $0.23 expected - a massive miss. Phosphate margins were squeezed by sulfur costs reaching $1,200 per ton. Management responded with significant action: partial curtailments at Bartow and Louisiana (50% of capacity each), scaled back Brazilian production, cut CapEx by $250 million to $1.25 billion, and initiated workforce reductions. Critically, Mosaic withdrew its full-year 2026 phosphate production guidance entirely - the "at least 7 million tons" from just three months earlier was abandoned. However, management maintained working capital release guidance ($300-500 million) and guided Q2 stripping margins above $400/ton with 60% already committed and priced.

Assessment: This is a management team that executes well on cost discipline and portfolio rationalization but has repeatedly been too optimistic on production and earnings. The $150 million cost savings target was delivered ahead of schedule - credible. The Biosciences doubling was delivered - credible. But phosphate production guidance has been revised downward repeatedly, and earnings have missed expectations in three of the four quarters analyzed. On balance, this management team is operationally competent but structurally optimistic about their earnings outlook. They are better at cutting costs and selling assets than at predicting their own production performance.

10. Shareholder Friendliness Index

Dividends: Mosaic paid $1.05 per share in 2023 (including a $0.25 special dividend), $0.84 per share in 2024 ($0.21 quarterly), and $0.88 per share in 2025 ($0.22 quarterly). Stripping out the 2023 special dividend, the regular dividend has grown modestly from $0.80 (2023) to $0.84 (2024) to $0.88 (2025) - a slow but consistent increase.

Buybacks and dilution: Mosaic returned $1.1 billion to shareholders in 2023 (including $756 million in buybacks) and $506 million in 2024 (including $235 million in buybacks). In 2025, buybacks were paused entirely as working capital consumed $960 million in cash. Since August 2022, Mosaic repurchased 26.7 million shares (8.05% of shares outstanding). Shares outstanding declined from approximately 322 million (February 2024) to approximately 317 million (February 2025) - a net reduction, though the pace has clearly stalled.

Verdict: Returns Capital - but inconsistently. Mosaic was aggressive in returning capital during 2022-2023 when cash flows were strong, then pulled back sharply as operational challenges consumed cash. The dividend has been maintained and modestly grown, but the buyback pause and rising net debt suggest capital returns are subordinate to operational and CapEx needs for the foreseeable future.

11. Insider Activities

Recent Transactions (last 12 months)

(Sources: SEC Form 4 filings via secform4.com; Form 4, various dates 2025-2026)

Buys - Reading the Signal

The open-market purchases are exclusively from directors, not officers. Director Kuzenko bought $17,500 worth of stock in November 2025 at $25.53. Directors Beebe and Westbrook bought $175k and $108k respectively in May 2025. These are small purchases - none exceeds a month of a typical director's annual retainer. No CEO, CFO, or senior executive has made an open-market purchase in the last 12 months. There is no cluster buying pattern among insiders with operational visibility.

Sells - Working Out the Why

The most significant transaction is CEO Bruce Bodine's $5.7 million sale on May 8, 2025 (180,708 shares at $31.56). This is a material sale - likely equivalent to multiple years of base salary. Reason not disclosed in the Form 4 filing beyond routine reporting. No 10b5-1 plan was explicitly referenced. SVP Precourt sold $643k on May 29, 2025. Director Ebel sold $324k the same day. The timing - all in May 2025, when the stock was trading in the low-to-mid $30s - suggests the sellers captured a local peak before the stock declined to the low-to-mid $20s by late 2025. Whether this reflects business insight or portfolio management is not determinable from the filings.

Net Assessment

Insiders are net sellers over the past 12 months by a significant margin. The CEO's $5.7 million sale alone exceeds all open-market purchases by an order of magnitude. Director buying has been present but in token amounts ($17k-$175k) that do not signal meaningful conviction. No officer with direct operational visibility has bought shares on the open market. The March 2026 equity grants are compensation, not conviction signals. The overall pattern is neutral to mildly bearish - there is no bullish insider signal, while the CEO sale at higher prices was well-timed.

12. Scenarios

Bull Case

The sulfur and ammonia price spike of early 2026 turns out to be a temporary dislocation driven by specific geopolitical events - the Persian Gulf and Black Sea disruptions ease, global shipping normalizes, and input costs return to historical ranges by late 2026. Meanwhile, China maintains its phosphate export restrictions through 2027 and beyond, driven by domestic LFP battery demand that shows no signs of slowing. This creates a structurally tighter global phosphate market where Mosaic, as the dominant North American producer, benefits from elevated finished product prices and normalized input costs simultaneously.

Esterhazy K3 and HydroFloat deliver the expected cost reductions in potash, and global potash demand hits record levels driven by palm oil economics in Southeast Asia, Chinese restocking, and Indian imports. Canpotex captures incremental market share from sanctioned Belarusian and Russian supply.

Mosaic Biosciences becomes a real growth platform - revenues grow from $68 million to $200 million+ over 2-3 years as biological crop inputs gain adoption. The rare earth project with Rainbow Rare Earths progresses to construction, opening a new revenue stream from existing assets. Brazilian operations finally hit their stride - distribution margins reach the $30-40 target as asset rationalization is completed and northern expansion pays off.

In this world, the working capital release occurs as guided, CapEx declines toward $1 billion, free cash flow normalizes, and buybacks resume. The stock re-rates as the market recognizes that the 2025-2026 trough was cyclical, not structural.

Base Case

Input cost pressures persist through mid-2026 but moderate in the second half as geopolitical tensions stabilize somewhat. Mosaic restarts curtailed production gradually - Bartow and Louisiana return to full rates by Q3 or Q4, but phosphate production for full-year 2026 comes in below the original 7-million-ton target. Stripping margins remain constructive but volatile, oscillating between $300 and $450 per ton depending on the sulfur and ammonia prices of the moment.

Potash performs as expected - strong volumes, low costs, steady margins. The potash segment carries the earnings while phosphate works through its input cost headwinds. Brazil improves marginally but remains the weakest segment.

Cost savings are delivered as promised ($250 million cumulative). Working capital releases partially as guided ($200-300 million). CapEx stays elevated but declines toward the lower end of guidance. Free cash flow turns positive but remains modest. The dividend is maintained; buybacks do not resume in 2026.

Management continues to execute on portfolio rationalization and Biosciences growth, but the company remains a cyclical commodity producer waiting for the next upcycle. The stock trades in a range reflecting the tension between tight global supply fundamentals and challenging input cost economics.

Bear Case

Geopolitical disruptions intensify. The Persian Gulf conflict escalates, sulfur prices remain above $1,000/ton for multiple quarters, and ammonia supply tightens further. Mosaic extends and deepens curtailments - Bartow and Louisiana operations are reduced to minimal rates, Brazilian production is curtailed further. Phosphate production drops well below 6 million tons for 2026.

Meanwhile, China reverses its phosphate export restrictions (responding to domestic farmer pressure or a strategic shift away from LFP), flooding the global market with cheap DAP and MAP. Phosphate prices collapse just as Mosaic's costs remain elevated - stripping margins compress below $200/ton, and some product lines become unprofitable.

In Brazil, agricultural credit conditions deteriorate, bad debts mount, and distribution volumes shrink. The Fertilizantes segment posts losses. Working capital does not release as guided because inventory cannot be sold at acceptable margins. Net debt continues to rise.

The dividend comes under review. The stock trades to cycle lows as the market prices in multi-year earnings depression. Management credibility suffers as the third consecutive year of disappointing earnings unfolds. The CapEx reduction was not by choice but by necessity, and critical maintenance of gypstacks and mines is deferred, creating future operational and environmental risks.