Page 4 - Martin Marietta - 2024 Sustainability Report

CEO Letter

Martin Marietta Achieves Safest Year on Record

We continued our relentless focus on world-class safety performance, achieving Martin Marietta’s safest year on record
with a world-class lost time incident rate (LTIR) for the eighth-consecutive year (0.129 in 2024) and a world-class total
injury incident rate (TIIR) for the third-consecutive year (0.650 in 2024). Moreover, our fidelity to our Guardian Angel
culture meant that 99.9% of our over 9,400 employees experienced ZERO lost-time incidents and 99.3% of employees
experienced zero reportable incidents. These results improve upon the prior year’s performance which was also one of the
best safety records in Martin Marietta’s history, demonstrating our unwavering commitment to build and maintain the
safest, best performing and most durable aggregates-led business. Our commitment to being a great employer and
fostering a safe and productive workplace is evidenced by our Company’s certification as a Great Place to Work ®
following an extensive employee survey seeking answers to a wide range of inquiries focused on teamwork, integrity,
equality, pride and respect.
Lost-Time Incident Rate (LTIR) Total Injury Incident Rate (TIIR)

0.39
1.34
1.26

0.24 0.84
0.78 0.78
World-Class
0.65 Safety Level
0.17 World-Class (0.90)
0.15 Safety Level
0.13 0.129
(0.20)
2010 2015 2021 2022 2023 2024 2010 2015 2021 2022 2023 2024

Continued Commitment to Excellence in Sustainability

We remain committed to driving growth and creating shareholder value through sustainable, responsible and transparent
business practices with effective and meaningful governance. We continue to look for opportunities to reduce our
company’s carbon footprint and invest in a sustainable future that are sensible and create value for our constituents. We
again reached out to more than 50 of our top shareholders during our 2024 annual Fall Engagement Program, which
represents approximately 75% of outstanding shares, to discuss our safety, financial and operating performance as well
as progress on establishing and achieving greenhouse gas (GHG) emissions targets. The shareholder feedback we received
precipitated a number of our 2024 actions, among them continuing to:

• Monitor, review and respond to sustainability indices and surveys, including CDP, Sustainalytics, and the SBTi, among others.
• Gather Scope 3 emissions data for purposes of evaluating those emissions against SBTI’s target threshold in accordance
with SBTi procedures.
• Provide sustainability disclosures in our annual Sustainability Report and on our website, including disclosures around
political contributions. In October 2024, we were recognized as a Trendsetter Company in the 2024 CPA-Zicklin
Index, meaning Martin Marietta earned a score of 90 percent or higher with respect to the strength of our political
spending disclosure practices and oversight policies.

These actions layer on top of the many enhancements we have made to our sustainability activities over the last few years
as a result of our robust shareholder engagement:

• In our 2023 Sustainability Report, issued in April 2024, we further expanded our roadmap for achieving our stated
Scope 1 greenhouse gas (GHG) emissions targets for 2030 and our 2050 Net Zero Ambition, updated our disclosure
about Board of Directors’ governance of our sustainability efforts, added additional disclosure about our efforts in
regard to water, land reclamation and biodiversity, and added a Sustainability Accounting Standards Board (SASB) Index
in addition to continuing to include the TCFD Alignment Index that was introduced in our 2022 Sustainability Report.

2 2024 SUSTAINABILITY REPORT