Page 3 - Martin Marietta - 2021 Proxy Statement

World-Class Safety Performance
In 2020, we continued our impressive safety performance despite the challenges of the COVID-19 pandemic. Through the
hard work and focus of our employees, safety awareness has remained high across the Company. Our employees know
world-class safety performance is both critical and achievable; and, importantly, 2020’s results demonstrate we can
continue to improve on our already strong safety record. Our company-wide Lost Time Incident Rate (LTIR) was 0.15, the
fourth consecutive year of achieving world-class or better LTIR thresholds, and our Total Injury Incident Rate (TIIR) was
0.93, compared with 1.18 in 2019.
Sustainability

Since 2015, we have annually issued our Sustainability Report to share our story and provide information that we believe is
responsive to requests from our shareholders and other stakeholders on the efforts and advancements we are making in
these important areas. Since our first Sustainability Report in 2015, we have enhanced our reporting with more
comprehensive descriptions of our outstanding safety and regulatory programs and performance, targeted and intentional
support of education and health, and strong community involvement. In our sixth annual Sustainability Report issued in
2020, we included additional disclosure about our activities, accomplishments and opportunities associated with key
sustainability matters, including those related to the environment. This included new disclosures of our direct greenhouse
gas emissions across all of our business lines, as well as our emissions reductions targets for 2030. In our seventh
Sustainability Report, to be issued in April 2021, we will provide additional information about greenhouse gas emissions
related to our operations (including our indirect greenhouse gas emissions) and our efforts to achieve our commitments,
including our community support during the COVID-19 pandemic. Our activities reflect that these matters continue to be
part of our core approach and strategy that bring value to our shareholders and other stakeholders.

Your Vote Matters
I urge you to cast your vote promptly, either by returning the enclosed Proxy Card or by the electronic or telephone
options described in our Proxy Statement – even if you plan to attend the Annual Meeting. We encourage you to vote so
that your shares will be represented at the meeting.

On behalf of the entire Board of Directors, thank you for your continued investment in Martin Marietta. We look forward
to continuing to deliver strong and responsible performance, innovation and growth to our customers, our shareholders
and our other stakeholders.

Sincerely,

C. Howard Nye
Chairman of the Board, President and Chief Executive Officer