Page 4 - 2020 Sustainability Report

CEO Letter

WE CONTINUE TO PROVE THAT ZERO IS POSSIBLE

99.8% 98.9% 79

of employees experienced of employees experienced business units have worked
ZERO lost-time incidents ZERO incidents more than 500,000 hours with
ZERO lost-time injuries

Over the years, we have built a solid foundation for ensuring our employees and managers have the information, tools
and resources to operate our business safely and efficiently and, in 2020, it was tested and shown to be robust and
resilient. For the fourth year in a row, Martin Marietta delivered a world-class safety performance in our industry with
99.8 percent of our approximately 9,000 employees experiencing zero lost-time incidents. In 2020, our performance
represented the best safety record in Martin Marietta’s history with Company-wide lost time and total injury incident rates
at 0.15 and 0.93, respectively. We recognize that our employees are our most valuable assets so we continue to strive for
zero incidents and to set a standard for our industry.

World-Class
Safety Level
0.39 0.24 0.15 (0.20)

2010 2015 2020
Note: Safety data current as of 12/31/2020. LTIR per 200,000 man hours worked. World-class levels based on general industries.

Sustainability is also a core value at Martin Marietta, as well a driver for continuous improvement and a key element of
delivering greater long-term value to our stakeholders. This commitment is shared throughout our enterprise — from our
Board of Directors to our managers to our employees — and is integral to each of our businesses and their day-to-day
operations. As part of our commitment to sustainability and acting in an environmentally responsible manner, we also
recognize the global threat posed by climate change and the need for a global and ambitious response.

Martin Marietta has vigorous governance and oversight in place relating to climate and other environmental matters. With
respect to climate concerns in particular, in 2020, we established reduction targets for the direct greenhouse gas (GHG)
emissions associated with our cement and magnesia specialties businesses which, although responsible for a small portion
of our revenue, generate the vast majority of our GHG emissions. We also have made new investments expanding our
ability to use alternate fuels and new operational changes, such as vertical integration at our Hunter, Texas cement
facility, to reduce our GHG footprint. We also have continued to enhance our disclosure related to the environmental
impact of our operations. In this year’s report, we provide additional information about GHG emissions related to our
operations, including reporting our Scope 2 emissions, and our efforts to implement new initiatives to achieve our
commitments.

Earlier in 2021, we hosted our virtual Investor Day. The program’s theme was SOAR to a Sustainable Future and
focused on our disciplined execution of a proven strategy, business model, outlook and other topics that are important to
our investors. SOAR, our five-year Strategic Operating Analysis and Review, is the foundation on which our business,
people and communities continue to thrive. Importantly, we also reaffirmed our commitment to a world-class safety
culture, operating in an environmentally responsible manner, supporting and investing in our people, and robust
governance protocols with oversight by an engaged Board of Directors.

2 2020 SUSTAINABILITY REPORT