Page 3 - Martin Marietta - 2022 Proxy Statement

meetings (mostly virtual) with 265 investment groups in the United States, Canada, the United Kingdom, Germany,
Norway, Sweden, and Switzerland, including most of our top 30 shareholders. In addition, we held a virtual Investor Day in
February 2021 with over 250 attendees.
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. In last year’s letter to you, published in April 2021, I noted our continued progress on sustainability
matters, including our enhanced disclosures of our Scope 1 and 2 greenhouse gas emissions (GHGs) and a roadmap for
achieving our 2030 reduction target. In our eighth Sustainability Report, to be issued in April 2022, we will provide Scope
2 GHG reduction targets and various initiatives we have implemented, and plan to implement, to execute on our
commitments, as well as the community support we have been providing during and related to the COVID-19 pandemic.
These activities continue to be part of our approach and strategy that bring value to our shareholders and other
stakeholders.

Over the past six years, we have added seven new independent directors. Almost half (45 percent) of our Board is diverse,
including three women and two African Americans, each of whom brings strong backgrounds and experience with
publicly-traded companies and add unique insights to our Board mix. In addition to our Board, we also recognize the
importance of diversity more broadly in our business and leadership. In this regard, I have taken the CEO Pledge for
Diversity & Inclusion to support a trusting environment where all ideas are welcomed and employees feel comfortable and
empowered to have discussions about diversity and inclusion.
Finally, our Board continues to play an essential role in determining and overseeing our strategic priorities, and I would like
to highlight our Board’s recent updating of our Ethics, Environment, Safety and Health (EESH) Committee Charter. Our
EESH Committee was first established in 1996, evidence of our long-standing commitment to making these issues central
to Martin Marietta’s culture and strategy and to good governance. In recent years, our EESH Committee has increasingly
focused on oversight of ESG matters, so in February 2022 we updated our EESH Committee Charter to reflect the various
roles and responsibilities of this important Board committee, including oversight of ethics and sustainability matters.

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. On behalf of the entire Board of Directors, thank you for your 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