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  <title>8-K</title>
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  <div style="display:none;"><ix:header><ix:hidden><ix:nonNumeric id="F_e3f8fb37-cdb9-4a02-b382-bf895e725186" name="dei:AmendmentFlag" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc">false</ix:nonNumeric><ix:nonNumeric id="F_8b3491b4-9bef-4534-8ec8-6c634988380e" name="dei:EntityCentralIndexKey" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc">0000916076</ix:nonNumeric></ix:hidden><ix:references><link:schemaRef xlink:type="simple" xlink:href="mlm-20240501.xsd"/></ix:references><ix:resources><xbrli:context id="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000916076</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2024-05-01</xbrli:startDate><xbrli:endDate>2024-05-01</xbrli:endDate></xbrli:period></xbrli:context></ix:resources></ix:header></div>
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  <p style="font-size:10pt;margin-top:5.75pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:'Calibri',sans-serif;min-width:fit-content;">UNITED STATES<br/>SECURITIES AND EXCHANGE COMMISSION<br/></span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:'Calibri',sans-serif;min-width:fit-content;">WASHINGTON, D.C. 20549</span></p>
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  <p style="font-size:10pt;margin-top:10pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:'Calibri',sans-serif;min-width:fit-content;">FORM </span><span style="font-size:18pt;font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_327a708e-dfc9-482d-830a-66bfd683dda0" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:DocumentType"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:'Calibri',sans-serif;min-width:fit-content;">8-K</span></ix:nonNumeric></span></p>
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  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:'Calibri',sans-serif;min-width:fit-content;">CURRENT REPORT</span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:6pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</span></p>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;margin-right:0.02986111111111111in;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-family:'Calibri',sans-serif;min-width:fit-content;">Date of Report (Date of earliest event reported): </span><span style="font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_96c37a9d-10f7-4a38-a148-6eaf7bf56b9a" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:DocumentPeriodEndDate" format="ixt:date-monthname-day-year-en"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">May 01, 2024</span></ix:nonNumeric></span></p></td>
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    <td style="padding-top:0.125in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;margin-right:0.02986111111111111in;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-family:'Calibri',sans-serif;min-width:fit-content;">Registrant&#8217;s Telephone Number, Including Area Code:</span><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span><span style="font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_b06dea52-e186-4726-b6ba-70cd0a5c99dc" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:CityAreaCode"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">919</span></ix:nonNumeric></span><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span><span style="font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_3c02d498-d56c-458a-b487-d7a7f9d42d99" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:LocalPhoneNumber"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">781-4550</span></ix:nonNumeric></span></p></td>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:7.5pt;font-family:'Calibri',sans-serif;min-width:fit-content;">(Former Name or Former Address, if Changed Since Last Report)</span></p>
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  <p style="font-size:10pt;margin-top:9.35pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span></p>
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  <div style="text-indent:-24.5pt;padding-left:24.5pt;margin-top:6pt;margin-bottom:0;text-align:left;"><span style="margin-right:1em;margin-right:1em;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_a9e45056-3353-4ccc-a14f-a3786bc49365" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:PreCommencementTenderOffer" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></div>
  <div style="text-indent:-24.5pt;padding-left:24.5pt;margin-top:6pt;margin-bottom:0;text-align:left;"><span style="margin-right:1em;margin-right:1em;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_35ab2297-76b6-4757-8503-bebbe6185ccc" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:PreCommencementIssuerTenderOffer" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></div>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:9pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Securities registered pursuant to Section 12(b) of the Act:</span></p>
  <table style="border-spacing:0;table-layout:fixed;width:100.0%;border-collapse:separate;">
   <tr style="visibility:collapse;">
    <td style="width:38%;"/>
    <td style="width:1%;"/>
    <td style="width:15%;"/>
    <td style="width:1%;"/>
    <td style="width:45%;"/>
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    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-family:'Calibri',sans-serif;min-width:fit-content;">Trading<br/>Symbol(s)</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_c7d88066-4fe1-4710-ba56-43144367237f" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:TradingSymbol"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">MLM</span></ix:nonNumeric></span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="font-family:'Calibri',sans-serif;"><ix:nonNumeric id="F_5bef78d7-bef1-4bfa-9a9a-02b88b48b6c6" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:SecurityExchangeName" format="ixt-sec:exchnameen"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">The New York Stock Exchange</span></ix:nonNumeric></span></p></td>
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  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8239;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8239;240.12b-2 of this chapter).</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Emerging growth company </span><span style="font-size:10pt;"><ix:nonNumeric id="F_1885bba7-da07-4a3f-88f4-0bbd5845f9cf" contextRef="C_ed6b7e4e-a68f-477b-b2a1-f36706293cdc" name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox"><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></ix:nonNumeric></span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. </span><span style="font-size:10pt;font-family:Times New Roman;">&#9744;</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:2.25pt double #000000;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;min-height:0.5in;justify-content:flex-end;"></div>
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  <div style="min-height:0.5in;"></div>
  <p style="font-size:10pt;margin-top:18pt;font-family:Times New Roman;margin-bottom:6pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Item 1.04 Mine Safety &#8211; Reporting of Shutdowns and Patterns of Violations.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:justify;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">On May 1, 2024, the Company received a section 107(a) order issued by the Mine Safety and Health Administration (&#8220;MSHA&#8221;) under the Federal Mine Safety and Health Act of 1977 at its Red Canyon Quarry in Colorado Springs, Colorado.  The order stated that a truck driver climbed up the back end of his trailer and sat on the edge of the back frame of the trailer without being properly tied off, without fall protection and in violation of the Company&#8217;s policies. The truck driver was exposed to risk of injuries from falling.  Corrective action was taken, and no one was injured in the cited incident.  The order has been terminated.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:justify;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:11pt;font-family:'Calibri',sans-serif;min-width:fit-content;"><br/></span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:11pt;font-family:'Calibri',sans-serif;min-width:fit-content;">&#160;</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:11pt;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:justify;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:9.35pt;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">SIGNATURES</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:9.35pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:'Calibri',sans-serif;min-width:fit-content;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</span></p>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:4.3pt;font-family:Times New Roman;margin-bottom:4.3pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">MARTIN MARIETTA MATERIALS, INC.</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">(Registrant)</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">&#160;</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:4.3pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">Date:</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:4.3pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">May 3, 2024</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:4.3pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">By:</span><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;border-bottom:0.25pt solid;"><p style="font-size:10pt;margin-top:4.3pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">/s/ James A. J. Nickolas</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;"><p style="font-size:10pt;margin-top:0.7pt;font-family:Times New Roman;margin-bottom:9.35pt;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-family:'Calibri',sans-serif;min-width:fit-content;">James A. J. Nickolas, <br/>Executive Vice President and Chief Financial Officer</span></p></td>
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8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM
8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
May 01, 2024
Martin Marietta Materials, Inc.
(Exact name of Registrant as Specified in Its Charter)
North Carolina
1-12744
56-1848578
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
4123 Parklake Avenue
Raleigh
,
North Carolina
27612
(Address of Principal Executive Offices)
(Zip Code)
Registrant's Telephone Number, Including Area Code:
919
781-4550
(Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading
Symbol(s)
Name of each exchange on which registered
Common Stock, $.01 par value per share
MLM
The New York Stock Exchange
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
☐
Item 1.04 Mine Safety – Reporting of Shutdowns and Patterns of Violations.
On May 1, 2024, the Company received a section 107(a) order issued by the Mine Safety and Health Administration ("MSHA") under the Federal Mine Safety and Health Act of 1977 at its Red Canyon Quarry in Colorado Springs, Colorado.  The order stated that a truck driver climbed up the back end of his trailer and sat on the edge of the back frame of the trailer without being properly tied off, without fall protection and in violation of the Company's policies. The truck driver was exposed to risk of injuries from falling.  Corrective action was taken, and no one was injured in the cited incident.  The order has been terminated.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
MARTIN MARIETTA MATERIALS, INC.
(Registrant)
Date:
May 3, 2024
By:
/s/ James A. J. Nickolas
James A. J. Nickolas,
Executive Vice President and Chief Financial Officer