Page 3 - 2021 Sustainability Report

CEO Letter

A Message from Our CEO

Despite the formidable challenges of the last two years, Martin Marietta delivered in 2021 another year of record-setting
financial, safety and operating performance. We accomplished this while managing the potential risks of COVID-19 to our
business and employees as we operated in person every day at all our sites across the country as an essential business,
with limited disruption. We believe our commitment and focus on creating a positive, lasting impact while delivering
exceptional, sustainable value is demonstrated by our performance. This Sustainability Report highlights our approach,
accomplishments, and goals in 2021 relating to Safe Operations, Environmental Stewardship, Employee Well-Being, and
Community Well-Being — the four pillars that comprise our sustainability program. We discuss our meaningful initiatives
and investments that helped us advance our long-term sustainability strategy.

Sustainability is 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 2019, we established Scope 1 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 last year’s report, we provided additional information about GHG emissions related to our
operations, including our efforts to implement new initiatives to achieve our Scope 1 emissions reduction commitments,
and reported our Scope 2 emissions. In this year’s report, we establish goals to reduce or offset our Scope 2 GHG
emissions.

WE CONTINUE TO PROVE THAT ZERO IS POSSIBLE

99.8% 99.1% 77 65
of employees experienced of employees experienced business units with 500,000+ business units achieved safety
ZERO lost-time incidents ZERO reportable incidents hours of work and ZERO milestones in 2021
in 2021 in 2021 lost-time injuries

Our priorities remained focused on the health and safety of our employees, as well as continuing to perform and meet the
needs of our customers and communities. Through our collective hard work and commitment to our Guardian Angel
vision, we were able to achieve world-class safety performance, with a goal of zero accidents. In addition, we moved
forward with our strategic plan, SOAR 2025, which is our five-year Strategic Operating Analysis and Review. We
successfully completed four value enhancing acquisitions in 2021 that expanded Martin Marietta’s footprint to the West
Coast, grew our customer and product reach, and strengthened existing positions. Our commitment to and execution of
our strategic plan has enabled us to position our business as an aggregates leader in approximately 90% of the
geographies in which we operate and to align our product offerings to leverage strategic cement and targeted
downstream opportunities with our aggregates. These accomplishments also helped us create industry leading
shareholder returns over the last 1-, 3- and 10-year periods.

MARTIN MARIETTA 1