Minerals Technologies Rule 144 notice for 6,501-share insider sale

Rhea-AI Filing Summary

Minerals Technologies Inc. (MTX) received a Rule 144 notice for a proposed sale of restricted shares. The notice covers the potential sale of 6,501 shares of common stock through Fidelity Brokerage Services LLC on the NYSE, with an indicated aggregate market value of $381,458.29. The filing states that there were 31,134,308 shares of common stock outstanding at the time of the notice.

The shares to be sold were acquired on November 21, 2025 via an employee stock option that was originally granted on January 19, 2016, and the option exercise was paid in cash. The person selling the shares represents that they are not aware of any material adverse, non-public information about the company’s current or prospective operations.

Insights

Equity capital markets analyst

Routine Rule 144 sale notice for MTX, limited size and neutral impact.

This notice discloses that an MTX affiliate or insider plans to sell 6,501 common shares on the NYSE through Fidelity Brokerage Services LLC, with an indicated $381,458.29 aggregate market value. The company had 31,134,308 shares outstanding when the notice was prepared, so the planned sale represents a very small portion of the equity base.

The shares were acquired on November 21, 2025 by exercising a stock option originally granted on January 19, 2016, with the exercise price paid in cash. The seller affirms they do not know of undisclosed material adverse information, which is standard language for such notices. Overall, this is an administrative disclosure of a modest insider sale under Rule 144, without additional financial or strategic implications in the excerpt.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	6501	381458.29	31134308	11/21/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/21/2025	Option Granted - 01/19/2016	Issuer			6501	11/21/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the Form 144 filing for Minerals Technologies (MTX) disclose?

The filing discloses a planned sale under Rule 144 of 6,501 shares of MTX common stock through Fidelity Brokerage Services LLC on the NYSE, with an indicated aggregate market value of $381,458.29.

How many Minerals Technologies (MTX) shares are covered by this Rule 144 notice?

The notice covers a planned sale of 6,501 shares of MTX common stock under Rule 144.

What is the stated market value of the MTX shares to be sold?

The 6,501 MTX common shares listed in the notice have an indicated aggregate market value of $381,458.29.

How many Minerals Technologies (MTX) shares were outstanding at the time of the notice?

The notice states that there were 31,134,308 shares of MTX common stock outstanding when it was prepared.

How and when were the MTX shares being sold under Rule 144 acquired?

The 6,501 shares were acquired on November 21, 2025 by exercising a stock option originally granted on January 19, 2016, with the exercise paid in cash.

Does the seller in the MTX Form 144 claim to know any undisclosed adverse information?

The seller represents that they do not know any material adverse information about MTX’s current or prospective operations that has not been publicly disclosed.