Metallus COO granted 29,100 shares, withholds 8,207

Metallus Inc. President & COO Kristopher R. Westbrooks reported two equity transactions.

Rhea-AI Filing Summary

Metallus Inc. President & COO Kristopher R. Westbrooks reported two equity transactions. He acquired 29,100 common shares through an award of restricted stock units that will vest in full on March 2, 2029, subject to the grant terms. He also disposed of 8,207 common shares at $17.00 per share to cover tax withholding obligations, a non‑open‑market transaction. Following these moves, his directly held common shares totaled 214,077 at the time of the award.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider WESTBROOKS KRISTOPHER R

Role President & COO

Type	Security	Shares	Price	Value
Grant/Award	Common Shares	29,100	$0.00	$0.00
Exercise Price or Tax Liability	Common Shares	8,207	$17.00	$140K

Holdings After Transaction: Common Shares — 214,077 shares (Direct)

Footnotes (1)

1. F1. The reported transaction is an award of restricted stock units which will vest in full on March 2, 2029, subject to the terms of the grant agreement.

FAQ

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

What insider transactions did Metallus (MTUS) report for Kristopher R. Westbrooks?

Metallus reported that President & COO Kristopher R. Westbrooks received an award of 29,100 restricted stock units and had 8,207 common shares withheld at $17.00 per share to satisfy tax obligations related to equity compensation.

How many Metallus (MTUS) shares did Kristopher R. Westbrooks acquire in the Form 4?

Kristopher R. Westbrooks acquired 29,100 common shares through an award of restricted stock units. These units represent share-based compensation that vests over time, aligning his interests with shareholders as the award fully vests on March 2, 2029, under grant terms.

Why were 8,207 Metallus (MTUS) shares disposed of at $17.00 in this Form 4?

The 8,207 Metallus common shares at $17.00 were disposed of to pay tax liabilities tied to equity compensation. This tax-withholding disposition is coded “F,” indicating shares were delivered to cover obligations rather than sold in an open-market transaction.

When do Kristopher R. Westbrooks’ Metallus (MTUS) restricted stock units vest?

The reported award of restricted stock units to Kristopher R. Westbrooks will vest in full on March 2, 2029. Vesting is subject to the terms of the grant agreement, meaning he must satisfy specified service or other conditions to receive the underlying shares.

What is Kristopher R. Westbrooks’ Metallus (MTUS) share ownership after these transactions?

After the reported equity award, Kristopher R. Westbrooks directly owned 214,077 Metallus common shares. This figure reflects his beneficial ownership following the grant and related tax-withholding disposition, as disclosed in the Form 4 non-derivative transaction table.

Are the Metallus (MTUS) insider transactions by Kristopher R. Westbrooks open-market trades?

The Form 4 shows an equity award and a tax-withholding disposition, not regular open-market trades. The 29,100-share grant is compensation, while the 8,207-share transaction at $17.00 covers tax obligations associated with equity rather than discretionary buying or selling.

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

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Accepted by SEC EDGAR 03/02/2026 - 09:00 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^*

WESTBROOKS KRISTOPHER R

(Last) (First) (Middle)

1835 DUEBER AVE. SW

(Street)

CANTON OH 44706

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Metallus Inc. [ MTUS ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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

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

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

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
Common Shares	03/01/2026		F		8,207	D	$17	184,977	D
Common Shares	03/02/2026		A		29,100(1)	A	$0	214,077	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 reported transaction is an award of restricted stock units which will vest in full on March 2, 2029, subject to the terms of the grant agreement.

	/s/ Kristine C. Syrvalin, as Attorney-in-Fact	03/02/2026
	** 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.
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