Page 4 - 2021 Sustainability Report

CEO Letter

We also continued to focus on our commitment to sustainability and good governance. We strictly adhere to our Code of
Ethical Business Conduct, which provides the framework for what we do and how we do it. It demands respect for all in
the workplace, with no exceptions or tolerance of harassment or retaliation. Our Board of Directors and independent
Committees actively oversee our performance relating to ethics, safety and health of our employees, our environmental
programs, inclusion and engagement, and other sustainability matters, working closely with the senior executive team to
enable our employees to operate with the utmost integrity and commitment to our values. The composition of our Board
of Directors, which includes a diversity of expertise, tenure, gender and race, has been refreshed over the past few years,
with seven new independent Directors in the past six years. We discuss these matters, including recent changes we’ve
made, that ensure that we meet our commitments to our customers, communities and stakeholders.

Atlanta and River for
Responsible the Rockies
stewards of capital West Region assets
~$7bn invested in acquisitions Prudent capex on projects Sustainable, meaningful dividend
since launch of SOAR in 2010 focused on efficiencies and returns maintained/increased every quarter

Committed to a 15% 99.1%
culture of
reduction in CO2e emissions from of employees experienced zero Team | Purpose | Future
sustainability cement operations by 2030 incidents
Environmental responsibility World-class safety performance Investment in human capital

These achievements result from a purposeful focus on fulfilling our responsibilities to our shareholders, our employees and
our communities. Sustainability is a key component of this strategy and our business plan at Martin Marietta.
Sustainability excellence is not only the right thing to do and a key driver of shareholder value for us, but it is also a vital
component of our short-term and long-term planning processes.

Importantly, we have also had the opportunity to engage with many of our shareholders and other stakeholders on a
variety of matters, including our Board composition, ESG matters, diversity and inclusion, political contributions and
lobbying, and our sustainability vision, approach, and achievements. We spoke to more than 200 investor groups in 2021,
and the views communicated to us have been instrumental in helping us develop our governance approach and
sustainability policies, some of which are reflected in the report that follows. We look forward to more conversations with
you about our work to continue strengthening Martin Marietta and its impact, as well as our achievements. We are
excited about our Company’s progress and, while there remains much to do, we know that our partnership with you on
this journey makes us ever more able to conquer whatever challenges lie ahead and to continue making a positive impact
on our communities and environment. We are proud to present you with our 2021 Sustainability Report and look forward
to continuing to report our commitment, shared purpose and strategy to building a more sustainable world.

Sincerely,

C. Howard Nye
Chairman, President and
Chief Executive Officer

2 2021 SUSTAINABILITY REPORT