United States Lime director sells $2.2M stock

USLM director Antoine M. Doumet sold 20,000 shares in a private transaction and now directly holds 90,000 shares.

Rhea-AI Filing Summary

UNITED STATES LIME & MINERALS INC (USLM) director Antoine M. Doumet reported selling 20,000 shares of USLM Common Stock in a private transaction on September 9, 2026 at $110.00 per share. After this sale, Doumet directly holds 90,000 shares. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Net Seller: 20,000 shares

Net Sell 1 txn

Insider DOUMET ANTOINE M

Role Director

Sold 20,000 shs ($2.20M)

Type	Security	Shares	Price	Value
Sale	USLM Common Stock F1	20,000	$110.00	$2.20M

Holdings After Transaction: USLM Common Stock — 90,000 shares (Direct)

Footnotes (1)

1. F1. The shares were sold in a private transaction.

Key Figures

Shares sold: 20,000 shares Sale price per share: $110.00 per share Approximate transaction value: $2,200,000 +1 more

4 metrics

Shares sold 20,000 shares USLM Common Stock sold by director on September 9, 2026

Sale price per share $110.00 per share Private sale of USLM Common Stock

Approximate transaction value $2,200,000 20,000 shares sold at $110.00 per share

Shares held after transaction 90,000 shares Direct holdings of Antoine M. Doumet following the sale

Key Terms

private transaction, Rule 10b5-1, Form 4

3 terms

private transaction financial

"The shares were sold in a private transaction."

A private transaction is the sale or transfer of securities, assets, or ownership stakes carried out directly between a small number of parties rather than on a public exchange. For investors it matters because these deals are less visible and often less liquid than public trades, so pricing can be harder to verify, the investment can be harder to sell quickly, and buyers or sellers may gain strategic advantages not available in open markets — like negotiated terms similar to a private garage sale versus a crowded marketplace.

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for this transaction."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Form 4 regulatory

"as disclosed in the Form 4."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did USLM director Antoine M. Doumet report?

Antoine M. Doumet reported a sale of 20,000 USLM Common Stock shares on September 9, 2026 in a private transaction at $110.00 per share, as disclosed in the Form 4.

How many USLM (USLM) shares does Antoine M. Doumet hold after this Form 4 transaction?

After the reported sale, Antoine M. Doumet directly holds 90,000 shares of USLM Common Stock. This post-transaction holding is stated in the Form 4 as the total shares following the transaction.

Was Antoine M. Doumet’s USLM share sale an open-market trade or a private transaction?

The Form 4 footnote states that the 20,000 shares were sold in a private transaction. The transaction code is a sale of non-derivative USLM Common Stock, and the note clarifies it was not an open-market trade.

What was the price per share in Antoine M. Doumet’s USLM stock sale?

The reported sale price was $110.00 per share for the 20,000 USLM Common Stock shares sold on September 9, 2026 in the private transaction.

Was Antoine M. Doumet’s USLM stock sale made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates no Rule 10b5-1 plan is affirmed for this transaction; the document-level 10b5-1 checkbox is not marked as being under such a trading plan.

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

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Available on EDGAR 09/11/2026 - 04:12 PM Accepted by SEC EDGAR 09/11/2026 - 04:12 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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)
09/09/2026

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	09/09/2026		S(1)		20,000	D	$110	90,000	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

Explanation of Responses:

1. The shares were sold in a private transaction.

	\s\ Antoine Doumet	09/11/2026
	** 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)