[8-K] United States Lime & Minerals Reports Material Event

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

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Date of Report (Date of earliest event reported): July 30, 2025

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UNITED STATES LIME & MINERALS, INC.

(Exact name of registrant as specified in its charter)

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TEXAS	​	0-4197	​	75-0789226
(State or other jurisdiction of	​	(Commission File Number)	​	(IRS Employer Identification No.)
incorporation)	​	​	​	​
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5429 LBJ FREEWAY, SUITE 230, DALLAS, TEXAS			​	75240
(Address of principal executive offices)			​	(Zip Code)

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(972) 991-8400

(Registrant’s telephone number, including area code)

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(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 (see General Instruction A.2. below):

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☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

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☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

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☐ 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, $0.10 par value	USLM	The Nasdaq Stock Market LLC

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. ☐

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ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

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On July 30, 2025, United States Lime & Minerals, Inc. (the “Company”) issued a News Release announcing the financial results for the quarter and six-months ended June 30, 2025. A copy of the News Release is attached hereto as Exhibit 99.1 and incorporated by reference herein in response to this Item 2.02.

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ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

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(d)  Exhibits

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The Exhibit Index set forth below is incorporated by reference in response to this Item.

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EXHIBIT INDEX

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Exhibit Number	​	Exhibit
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99.1	​	News Release of United States Lime & Minerals, Inc. dated July 30, 2025.
104	​	Cover Page Interactive Data File (formatted as Inline XBRL).

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SIGNATURES

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Pursuant to the requirements of the Securities Exchange Act of 1934, United States Lime & Minerals, Inc. has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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Date: July 30, 2025	UNITED STATES LIME & MINERALS, INC.
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​	By:	/s/ Michael L. Wiedemer
​	​	Michael L. Wiedemer, Vice President and
​	​	Chief Financial Officer

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