USLM (USLM) director exercises options to acquire 12,000 common shares

Rhea-AI Filing Summary

UNITED STATES LIME & MINERALS INC director Antoine M. Doumet exercised stock options to acquire 12,000 shares of USLM common stock. The options were exercised at a price of $10.71 per share. Following the exercise, he directly holds 110,000 shares of USLM common stock, and this filing shows no remaining derivative position from these options.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DOUMET ANTOINE M

(Last) (First) (Middle)

5429 LBJ FREEWAY

SUITE 230

(Street)

DALLAS TEXAS 75240

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
UNITED STATES LIME & MINERALS INC [ USLM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
USLM Common Stock	03/17/2026		M		12,000	A	$10.71	110,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$10.71	03/17/2026		M			12,000	04/29/2016	04/29/2026	USLM Common Stock	12,000	$10.71	0	D

Explanation of Responses:

	\s\ Antoine Doumet	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did USLM director Antoine M. Doumet report on this Form 4?

Antoine M. Doumet reported exercising stock options to acquire 12,000 shares of USLM common stock. The options were exercised at $10.71 per share, converting a derivative position into directly held shares without any reported share sales in this filing.

How many USLM shares did Antoine M. Doumet acquire through option exercise?

He acquired 12,000 shares of USLM common stock through exercising options. The transaction converted a prior stock option award into actual shares, increasing his directly held common stock position reported in this Form 4 for UNITED STATES LIME & MINERALS INC.

At what price were Antoine M. Doumet’s USLM stock options exercised?

The stock options were exercised at $10.71 per share. This price reflects the option exercise price, not necessarily the market price, and determines the cash cost to convert his option grant into 12,000 shares of USLM common stock.

What are Antoine M. Doumet’s USLM share holdings after this Form 4 transaction?

After the reported transactions, he directly holds 110,000 shares of USLM common stock. This figure reflects his ownership following the 12,000-share option exercise and indicates his ongoing equity stake as a director of UNITED STATES LIME & MINERALS INC.

Did the USLM Form 4 filing show any share sales by Antoine M. Doumet?

No share sales were reported in this Form 4. The filing only shows an option exercise converting 12,000 derivative securities into USLM common stock, with no sale transactions or tax withholding dispositions disclosed for this reporting date.