Vulcan Materials quarry receives imminent danger order

Vulcan Materials Company reported that its subsidiary Calmat Co. received an imminent danger order from the Mine Safety and Health Administration on October 27, 2026, at Lexington Quarry in Los Gatos, California.

Available on EDGAR 10/30/2026 - 04:31 PM EDT Accepted by SEC EDGAR 10/30/2026 - 04:30 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Vulcan Materials Company reported that its subsidiary Calmat Co. received an imminent danger order from the Mine Safety and Health Administration on October 27, 2026, at Lexington Quarry in Los Gatos, California. The order required removal of personnel exposed to fall hazards while performing maintenance. Vulcan said no injuries occurred and that it promptly took corrective action to protect personnel and terminate the order.

8-K Event Classification

Item 1.04 — Mine Safety - Reporting of Shutdowns and Patterns of Violations

1 item

Item 1.04 Mine Safety - Reporting of Shutdowns and Patterns of Violations Business

Mine safety violations, closure orders, or patterns of safety issues at mining operations.

Key Terms

imminent danger order, Mine Safety and Health Administration, Federal Mine Safety and Health Act of 1977

3 terms

imminent danger order regulatory

"received an imminent danger order issued by the Mine Safety"

Mine Safety and Health Administration regulatory

"issued by the Mine Safety and Health Administration"

The Mine Safety and Health Administration (MSHA) is a U.S. federal agency that sets and enforces safety and health standards for mining operations, conducts inspections, investigates accidents, and issues citations or fines. Its actions matter to investors because safety rules, enforcement actions, or accident findings can increase operating costs, interrupt production, create legal and cleanup liabilities, and damage a miner’s reputation—similar to how building inspections or traffic enforcement affect a company’s ability to operate smoothly.

Federal Mine Safety and Health Act of 1977 regulatory

"under section 107(a) of the Federal Mine Safety and Health Act of 1977"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the MSHA order require at VMC’s Lexington Quarry?

It required personnel exposed to fall hazards to be removed while performing maintenance. Calmat Co., a Vulcan Materials Company subsidiary, received the order at Lexington Quarry in Los Gatos, California, on October 27, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): October 27, 2026

VULCAN MATERIALS COMPANY

(Exact name of registrant as specified in its charter)

New Jersey		001-33841		20-8579133
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

1200 Urban Center Drive

Birmingham, Alabama 35242

(Address of principal executive offices) (zip code)

(205) 298-3000

Registrant's telephone number, including area code

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, $1 par value	VMC	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.  ☐

1

Item 1.04

Mine Safety.

On October 27, 2026, Calmat Co., a subsidiary of Vulcan Materials Company (the “Company”), received an imminent danger order issued by the Mine Safety and Health Administration under section 107(a) of the Federal Mine Safety and Health Act of 1977 at its Lexington Quarry in Los Gatos, California. The order was issued to remove personnel exposed to fall hazards while performing maintenance. No injuries occurred, and the Company promptly took corrective action concerning the incident to protect the personnel and terminate the order.

2

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.

	VULCAN MATERIALS COMPANY
Date: October 30, 2026		By:	/s/ Jerry F. Perkins Jr.
		Name:	Jerry F. Perkins Jr.
		Title:	Chief Administrative Officer

0001396009 false 0001396009 2026-10-27 2026-10-27

Filing Exhibits & Attachments

3 documents

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION - SCHEMA 3.0 KB
• EX-101 XBRL TAXONOMY EXTENSION - LABEL LINKBASE 19.6 KB
• EX-101 XBRL TAXONOMY EXTENSION - PRESENTATION LINKBASE 10.8 KB