Metallus: Michael S. Williams proposes $2.23M share sale

The notice lists an aggregate market value of $2,225,097 and an approximate sale date of October 2, 2026.

Rhea-AI Filing Summary

Metallus Inc. is named as the issuer in a Rule 144 notice proposing a sale for Michael S. Williams, identified as an officer and director. The notice lists 100,000 common shares with an aggregate market value of $2,225,097 and an approximate sale date of October 2, 2026; Charles Schwab & Co., Inc. is listed as broker and NYSE as the exchange. The acquisition information describes the common stock as RSUs acquired from the issuer between January 5 and February 6, 2024.

Key Figures

Shares to be sold: 100,000 common shares Aggregate market value: $2,225,097 Shares outstanding: 41,449,284 shares +1 more

4 metrics

Shares to be sold 100,000 common shares Proposed sale

Aggregate market value $2,225,097 Securities listed for sale

Shares outstanding 41,449,284 shares Shares of the same class

Approximate sale date October 2, 2026 Date listed for the proposed sale

Key Terms

Rule 144, RSU, Aggregate market value

3 terms

Rule 144 regulatory

"sales required by paragraph (e) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

RSU financial

"RSU acquired between January 5, 2024 and February 6, 2024"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

Aggregate market value financial

"Aggregate market value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

How many MTUS shares does Michael S. Williams propose to sell?

The notice lists a proposed sale of 100,000 common shares, with an aggregate market value of $2,225,097.

How did Michael S. Williams acquire the MTUS shares listed for sale?

The acquisition information describes the common stock as RSUs acquired from the issuer between January 5 and February 6, 2024.

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

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Available on EDGAR 10/02/2026 - 11:21 AM Accepted by SEC EDGAR 10/02/2026 - 11:20 AM Learn about SEC filing dates

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	0001554176
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Metallus Inc.
SEC File Number	001-36313
Address of Issuer	1835 DUEBER AVENUE SW CANTON OHIO 44706-0928
Phone	330-471-7000
Name of Person for Whose Account the Securities are To Be Sold	Williams Michael S
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	Officer
Relationship to Issuer	Director

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	Charles Schwab & Co., Inc. 3000 Schwab Way Westlake TX 76262	100000	2225097.00	41449284	10/02/2026	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	01/05/2024	RSU ACQUIRED BETWEEN 1/5/24 TO 2/6/24	ISSUER			100000	01/05/2024	NA

* 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	10/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/20/2026
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	MICHAEL SCOTT WILLIAMS
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)