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)  November 23, 2015

UNITED STATES LIME & MINERALS, INC.

(Exact name of registrant as specified in its charter)

(972) 991-8400

(Registrant’s telephone number, including area code)

(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):

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

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

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

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01. OTHER EVENTS.

On November 23, 2015, United States Lime & Minerals, Inc. issued a News Release announcing that its Board of Directors has authorized the repurchase of up to $10,000,000 of its common stock from time to time in open market or privately negotiated transactions over the next 12 months.  The repurchase authorization may be modified, extended, suspended or discontinued at any time without notice.  A copy of the News Release is attached hereto as Exhibit 99.1 and incorporated by reference in response to this Item.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(d)  Exhibits

SIGNATURES

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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EXHIBIT INDEX

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