Metallus (NYSE: MTUS) president sells 10,932 shares under 10b5-1 plan

Rhea-AI Filing Summary

Metallus Inc. president and COO Kristopher R. Westbrooks exercised stock options and sold shares of the company. On January 14, 2026, he exercised nonqualified stock options for 5,172 common shares at $12.45 and 1,760 common shares at $14.34, increasing his directly held common shares before the sale.

That same day, he sold 10,932 common shares at a weighted average price of $20.06, with individual sale prices ranging from $20.00 to $20.14, and reported owning 189,076 common shares directly afterward. Following these transactions, he also held 5,172 and 3,520 nonqualified stock options. All transactions were carried out under a written Rule 10b5‑1 trading plan adopted on May 12, 2025.

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).

X

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)
01/14/2026

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	01/14/2026		M		5,172	A	$12.45	198,248	D
Common Shares	01/14/2026		M		1,760	A	$14.34	200,008	D
Common Shares	01/14/2026		S		10,932	D	$20.06(1)	189,076	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
Nonqualified Stock Option (Right to buy)	$12.45	01/14/2026		M			5,172	(2)	03/01/2029	Common Shares	5,172	$0	5,172	D
Nonqualified Stock Option (Right to buy)	$14.34	01/14/2026		M			1,760	(3)	09/24/2028	Common Shares	1,760	$0	3,520	D

Explanation of Responses:

1. Price reported is the weighted average sale price for shares sold by the reporting owner on January 14, 2026. Shares were sold at a variety of prices ranging from $20.00 to $20.14.

2. Vested in four equal annual installments beginning March 1, 2020.

3. Vested in four equal annual installments beginning September 24, 2019.

Remarks:

The reporting person adopted a written plan for the sale of the Company's common shares intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c) on May 12, 2025. All transactions reported herein were made pursuant to that plan.

	/s/ Kristine C. Syrvalin, as Attorney-in-Fact	01/14/2026
	** 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.

FAQ

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

The filing reports that Kristopher R. Westbrooks, President & COO of Metallus Inc., exercised stock options and sold common shares on January 14, 2026.

How many Metallus (MTUS) shares did the president sell and at what price?

He sold 10,932 common shares at a weighted average price of $20.06 per share, with individual sale prices ranging from $20.00 to $20.14.

What stock options did the Metallus (MTUS) president exercise?

He exercised 5,172 nonqualified stock options at an exercise price of $12.45 and 1,760 nonqualified stock options at an exercise price of $14.34 on January 14, 2026.

How many Metallus (MTUS) shares does Kristopher R. Westbrooks own after the transactions?

After the reported transactions, he directly owned 189,076 common shares of Metallus Inc.

Does the Metallus (MTUS) Form 4 involve a Rule 10b5-1 trading plan?

Yes. The filing states that all transactions were made under a written plan for the sale of common shares intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c), adopted on May 12, 2025.

What option holdings remain for the Metallus (MTUS) president after these transactions?

Following the transactions, he held 5,172 nonqualified stock options tied to common shares and an additional 3,520 nonqualified stock options.

What is Kristopher R. Westbrooks’ role at Metallus (MTUS)?

He is identified in the filing as an officer, serving as President & COO of Metallus Inc.