Mosaic : 2023 Sustainability Disclosure and GRI Index

2023

Sustainability

Disclosure

& GRI Index

2023

Sustainability

Disclosure

& GRI Index

Dear Mosaic Stakeholders

Over the past eight years, with Joc O'Rourke leading Mosaic, we made considerable strides forward. We completed and ramped up production at the world's largest potash mine in Esterhazy, Saskatchewan, Canada. We expanded our global production footprint with an acquisition that established Mosaic as the largest phosphate producer in Brazil. We committed to 18 sustainability targets so

that society at large can understand our progress on environmental and social issues. We restructured our cost profiles. And we built a strong, efficient financial foundation by reducing debt and diversifying our funding options.

I am grateful for Joc's leadership, for his long-term mentorship - and for the strong momentum propelling Mosaic forward as I begin my tenure as the company's President and CEO.

Our momentum increased in 2023. Despite generally lower fertilizer prices, Mosaic produced net income of $1.2 billion and adjusted EBITDA of $2.8 billion and returned $1.1 billion to shareholders through share repurchases and dividends.

We made important progress: We completed the development of Esterhazy K3, which is now the world's largest potash mine and one of the most efficient. We began construction of a 1 million tonne fertilizer blending and distribution facility in Palmeirante, in the state of Tocantins, Brazil, which will provide Mosaic access to the fast-growing northern agricultural region. We began to convert part of our Riverview, Florida phosphate facility to expand production capacity of our MicroEssentials® performance phosphate fertilizer; once the facility is at full capacity, we expect that half of our U.S. phosphate sales will be non- commodity MicroEssentials products. And in January 2023, we completed the sale of Streamsong Resort for $160 million and committed to use a portion of the proceeds to fund our community investment work for the long term.

And yet, as always, we have a lot to accomplish. Regardless of how busy we might be and become, rest assured that we will maintain and even amplify our efforts to operate responsibly. Our commitment to the United Nations Global Compact and its 10 principles remains strong. I want my legacy as Mosaic's fourth CEO to include financial success, of course, and I want to be known for taking a very responsible company and making it even better.

Safety is our first priority. We have made tremendous strides in our safety performance over the past 10 years, but for the past two years our numbers have plateaued. We have a renewed, companywide mandate to drive toward zero injuries, and we intend to get there through refined training, a better management system and regular communication. It is our top job as leaders to ensure that every Mosaic employee and contractor goes home safely after every single shift.

2 2023 MOSAIC SUSTAINABILITY DISCLOSURE

2023

Sustainability

Disclosure

& GRI Index

Mosaic has been a leader in our industry when it comes to sustainability performance and reporting for many years, and we intend to maintain our lead. We are making good progress toward our 18 sustainability targets - including carbon emission and water use reductions, steps forward on our diversity and inclusion journey, and widespread education for our customers and farmers on proper use of fertilizers.

We also will continue our decades of work to make our communities better. In 2023, we invested nearly $17 million in communities around the world, and our people amplified those investments through thousands of hours of volunteer time.

Society's expectations of companies' role in the use of resources, treatment of people and participation in communities has increased dramatically. At Mosaic, we welcome and embrace this change, and we will do our part.

In 2024, Mosaic will celebrate its 20th year as a public company. I have been here for every moment of our extraordinary evolution, and I am proud to lead the company - along with more than 14,000 women and men around the world - to achieve our mission of helping the world grow the food it needs.

Sincerely,

Bruce Bodine

President and Chief Executive Officer

The Mosaic Company

3 2023 MOSAIC SUSTAINABILITY DISCLOSURE

2023

Sustainability

Disclosure

& GRI Index

Environmental, Social and Governance (ESG) Performance Targets

18 Targets, 3 Complete

We continue to approach our environment, social and governance performance with the same determination we apply to our mission: to help the world grow the food

it needs. Our short-, mid- and long-term targets, prioritized in the areas of People, Environment, Society and Company, serve as our compass as we drive progress in the areas that matter most to Mosaic and our diverse stakeholders.

ESG Performance Targets Summary

SOCIETY

6

Targets

ENVIRONMENT

5**

Targets

PEOPLE

7

Targets

5	0	1*
ON TRACK	TRAILING	COMPLETE

2	3	0
ON TRACK	TRAILING	COMPLETE

4	1	2*
ON TRACK	TRAILING	COMPLETE

See all of our ESG Performance Targets on the following pages ››

*Figure reflects two completed targets that were not included in the 2022 Sustainability Report. **Five targets reflect the consolidation of mid- and long-termnet-zero targets.

4 2023 MOSAIC SUSTAINABILITY DISCLOSURE

Environmental, Social and Governance (ESG) Performance Targets

SOCIETY

Click on the target to view more content within this document.

TARGET

Engage suppliers and service providers representing key ESG areas.

2023 PERFORMANCE

Continued engagement with key transportation, raw materials and procurement suppliers and contractors on ESG topics including diversity and inclusion, greenhouse gas emissions and water tracking and management.

STATUS

ON TRACK

Increase indigenous representation in Canada in three key areas.

Achieved 11.5% procurement spend and
23% community investments.	ON TRACK

Empower farmers to reduce environmental impacts by implementing 4R Nutrient Stewardship practices on 25 million acres.

4R Nutrient Stewardship practices

implemented on 15.7 million acres inON TRACK North America.

Achieve 30% performance product sales of phosphate and potash crop nutrient tonnes.

Achieved 44% sales of
performance products.	ON TRACK

Focus 30% of community giving on diversity and inclusion.

29% of giving dollars allocated to diversity

and inclusion (D&I) grants, representing ON TRACK over $4.8 million in D&I community

investments globally.

Establish companywide systems for capturing volunteer hours: report results annually.

Established companywide systems in 2021.

COMPLETE

5 2023 MOSAIC SUSTAINABILITY DISCLOSURE

Environmental, Social and Governance (ESG) Performance Targets

ENVIRONMENT

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TARGET

Enact companywide governance structure for tailings management and assess against a global standard.

2023 PERFORMANCE	STATUS
Completed dam safety standard
implementation workshops.	ON TRACK

Reduce freshwater use by 20% per tonne of product.

Achieved 4% reduction in freshwater

intensity since baseline year, representing TRAILING year-over-year intensity increase of 3%. In

2023 we saw an increase in water use due to production shortfalls, and weather and operational challenges. However, our 2025 targets remain attainable.

Reduce greenhouse gas emissions by 20% per tonne of product.

Achieved 3% reduction in GHG intensity

since baseline year, representing 11%TRAILING increase in scope 1 and 2 GHG emissions

intensity year over year. In 2023 we saw production shortfalls, and weather and operational challenges. In addition, increased ammonia year-over-year production raised our relative scope 1 and 2 emissions.

Eliminate significant environmental incidents.

Recorded a 15% year-over-year increase
in environmental incident frequency	TRAILING
rate. EH&S Team has environmental
initiatives to drive continued improvement
/ reduction in severity of environmental
incidents in 2024.

Achieve net-zero GHG emissions in 2040 companywide, with achieving Florida milestone emission total by 2030.*

Piloted decarbonization roadmapping
exercises in Canada, Brazil and U.S.	ON TRACK

*Considered two separate targets previously.

6 2023 MOSAIC SUSTAINABILITY DISCLOSURE

Environmental, Social and Governance (ESG) Performance Targets

PEOPLE

Click on the target to view more content within this document.

TARGET

2023 PERFORMANCE

STATUS

Advance risk reduction to drive health and safety performance.

Reached 100% of risk reduction target,

representing execution of more thanON TRACK 298 projects.

Implement worker wellness programs that enhance worker safety and health, engage employees in development opportunities and promote inclusivity.

Progressed global wellness training

initiatives; launched computer-basedON TRACK wellness training in North America and

began evaluating this training in other regions. Added Brazil in our global wellness platform; now almost all employees in US, Canada, and Brazil have access to wellness tools and resources.

Have women representing 30% of our workforce.

17% of the workforce represented	TRAILING
by women.

Have 30% growth in underrepresented groups in the workplace.

Achieved 38% growth in
underrepresented groups.	ON TRACK

Reach 30% growth in leadership diversity.

Reached 38% growth in diverse leadership.

ON TRACK

Update our Commitment to Inclusion and engage employees in its principles.

Refreshed and distributed in 2023.

COMPLETE

Define and track metrics that address geographic and business-specific diversity and gender balancing needs.

Quantified D&I targets replaced this
interim target in 2022.	COMPLETE

7 2023 MOSAIC SUSTAINABILITY DISCLOSURE

2023

GRI Content Index

General Standard Disclosures

GRI STANDARD/				EXTERNAL	SASB
OTHER SOURCE	DISCLOSURE	LOCATION	OMISSIONS	ASSURANCE	DISCLOSURE

GENERAL DISCLOSURES

GRI 2:

General Disclosures 2021

2-1	Organizational details	2023 10-K, pg. 1	-
2-2	Entities included in the	2023 10-Kand	-
	organization's sustainability	PDF pg. 21
	reporting
2-3	Reporting period, frequency	PDF pg. 21	-
	and contact point
2-4	Restatements of information	PDF pg. 21	-
2-5	External assurance	PDF pg. 21	-
2-6	Activities, value chain and	PDF pg. 22	-
	other business relationships
2-7	Employees	PDF pg. 25	-
2-8	Workers who are	We are omitting this disclosure	-
	not employees	due to availability of data. Mosaic
		does not track individual contract
		worker counts or demographics.
2-9	Governance structure and	Proxy Statement	-
	composition	pgs. 19-24
2-10	Nomination and selection	Proxy Statement	-
	of the highest governance	pgs. 5-6,16-17
	body
2-11	Chair of the highest	Proxy Statement	-
	governance body	pgs. 22
2-12	Role of the highest	Proxy Statement	-
	governance body in	pgs. 18-20and
	overseeing the management	PDF pg. 26
	of impacts
2-13	Delegation of responsibility	Proxy Statement	-
	for managing impacts	pgs. 18-20and
		PDF pg. 26
2-14	Role of the highest	Proxy Statement	-
	governance body in	pgs. 7-8and
	sustainability reporting	PDF pg. 26
2-15	Conflicts of interest	Proxy Statement	-
		pgs. 25-26
2-16	Communication of critical	Proxy Statement	-
	concerns	pg. 76-78
2-17	Collective knowledge of the	Proxy Statement	-
	highest governance body	pgs. 10-18
2-18	Evaluation of the	Proxy Statement	-
	performance of the highest	pg. 17-18

governance body

8 2023 MOSAIC SUSTAINABILITY DISCLOSURE

General Standard Disclosures

GRI STANDARD/				EXTERNAL	SASB
OTHER SOURCE	DISCLOSURE	LOCATION	OMISSIONS	ASSURANCE	DISCLOSURE

GENERAL DISCLOSURES (continued)

GRI 2:

General Disclosures 2021

2-19	Remuneration policies	Proxy Statement	-
		pgs. 27-29
2-20	Process to determine	Proxy Statement	-
	remuneration	pgs. 27-29
2-21	Annual total	Proxy Statement	-
	compensation ratio	pg. 47
2-22	Statement on sustainable	CEO Letter	-
	development strategy	PDF pg. 2
2-23	Policy commitments	PDF pg. 26	-
2-24	Embedding policy	PDF pg. 26	-
	commitments
2-25	Processes to remediate	Mosaicco.com/	-
	negative impacts	Our-Responsibility
2-26	Mechanisms for seeking	PDF pg. 28	-
	advice and raising concerns
2-27	Compliance with laws and	PDF pg. 28	-
	regulations
2-28	Membership associations	PDF pgs. 28-31	-
2-29	Approach to stakeholder	PDF pgs. 32-33	-
	engagement
2-30	Collective bargaining	PDF pg. 34	-
	agreements

Material Topics

GRI 3:	3-1	Process to determine	PDF pg. 35	-
Material		material topics
Topics
2021	3-2	List of material topics	PDF pgs. 35-36	-

9 2023 MOSAIC SUSTAINABILITY DISCLOSURE

General Standard Disclosures

GRI STANDARD/					EXTERNAL	SASB
OTHER SOURCE	DISCLOSURE	LOCATION	OMISSIONS	ASSURANCE	DISCLOSURE
ECONOMIC
Economic Performance
GRI 3:	3-3	Management of	PDF pg. 37		-
Material		material topics
Topics 2021
GRI 201:	201-1	Direct economic value	PDF pgs. 38-40		-
Economic		generated and distributed
Performance
2016	201-2	Financial implications	PDF pg. 40		-
		and other risks and
		opportunities due to
		climate change
	201-3	Defined benefit plan	PDF pgs. 40-42		-
		obligations and other
		retirement plans
	201-4	Financial assistance	PDF pg. 42		-
		received from government
Market Presence
GRI 3:	3-3	Management of	PDF pg. 43		-
Material		material topics
Topics 2021
GRI 202:	202-1	Ratios of standard entry	PDF pg. 44		-
Market		level wage by gender
Presence		compared to local minimum
2016		wage
	202-2	Proportion of senior	PDF pg. 44		-
		management hired from
		the local community
Indirect Economic Impacts
GRI 3:	3-3	Management of	PDF pg. 43		-
Material		material topics
Topics 2021
GRI 203:	203-1	Infrastructure investments	PDF pgs. 45-46		-
Indirect		and services supported
Economic
Impacts	203-2	Significant indirect	PDF pgs. 47-48		-
2016		economic impacts
Procurement Practices
GRI 3:	3-3	Management of	PDF pg. 43		-
Material		material topics
Topics 2021
GRI 204:	204-1	Proportion of spending	PDF pg. 48		-
Procurement		on local suppliers
Practices
2016

10 2023 MOSAIC SUSTAINABILITY DISCLOSURE