MSHA safety order at Kokomo Quarry resolved by Martin Marietta (NYSE: MLM)

Rhea-AI Filing Summary

Martin Marietta Materials, Inc. reported a mine safety event at its Kokomo Quarry in Indiana. On February 11, 2026, the Mine Safety and Health Administration issued a section 107(a) order after a miner was seen standing on a crusher platform about 10 feet above ground without being properly anchored, despite wearing fall protection.

The company states that corrective action was taken, no one was injured, and the MSHA order has been terminated. This describes a resolved safety compliance incident rather than an ongoing shutdown or continuing violation.

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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): February 11, 2026

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 February 11, 2026, 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 Kokomo Quarry in Kokomo, Indiana. The order stated that a miner was observed standing on an elevated crusher platform being constructed approximately 10 feet off the ground. Although the miner was wearing fall protection, the miner was not anchored to an effective position to prevent a danger of falling, exposing the miner to risk of injuries. 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:	February 13, 2026	By:	/s/ Sara W. Brown
			Sara W. Brown, Deputy General Counsel and Assistant Corporate Secretary

FAQ

What mine safety incident did Martin Marietta (MLM) report at Kokomo Quarry?

Martin Marietta reported an MSHA section 107(a) order at its Kokomo Quarry after a miner was observed on a crusher platform about 10 feet high without being properly anchored. The miner wore fall protection, corrective action was taken, and the order was later terminated.

When did MSHA issue the section 107(a) order to Martin Marietta (MLM)?

MSHA issued the section 107(a) order to Martin Marietta on February 11, 2026. The order related to a miner working on an elevated crusher platform at the Kokomo Quarry in Indiana without being effectively anchored, prompting immediate corrective measures by the company.

Was anyone injured in the Martin Marietta (MLM) Kokomo Quarry safety incident?

No, Martin Marietta states that no one was injured in the Kokomo Quarry incident. A miner was on an elevated crusher platform about 10 feet off the ground without proper anchoring, but fall protection was worn and corrective action resolved the situation without injuries.

What safety condition triggered the MSHA order for Martin Marietta (MLM)?

The MSHA order was triggered when a miner was observed standing on an elevated crusher platform being built about 10 feet above ground. Although the miner wore fall protection, they were not anchored to an effective position, creating a fall risk and leading to the section 107(a) order.

What was the outcome of the MSHA section 107(a) order for Martin Marietta (MLM)?

The outcome was that Martin Marietta took corrective action at the Kokomo Quarry, and the MSHA section 107(a) order was terminated. The company reports that the unsafe condition was addressed and that no injuries occurred as a result of the cited situation.

Which Martin Marietta (MLM) facility was involved in the reported mine safety order?

The incident occurred at Martin Marietta’s Kokomo Quarry in Kokomo, Indiana. MSHA issued a section 107(a) order after observing a miner on an elevated crusher platform about 10 feet high without being effectively anchored, though the miner was using fall protection equipment.

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