Metallus (MTUS) president exercises options and sells 93 common shares

Rhea-AI Filing Summary

Metallus Inc. executive Kristopher R. Westbrooks reported small, routine equity transactions. On January 15, 2026, the President & COO exercised 93 Nonqualified Stock Options at an exercise price of $12.45 per share to acquire 93 common shares, then sold those 93 common shares in an open-market transaction at a weighted average price with individual sale prices ranging from $21.00 to $21.01.

After these transactions, he beneficially owned 189,076 common shares directly and 5,079 Nonqualified Stock Options. All of the reported sales were made under a written trading plan adopted on May 12, 2025 that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c).

Insider Trade Summary

Net Seller: 93 shares ($1,953)

Net Sell 3 txns

Insider WESTBROOKS KRISTOPHER R

Role President & COO

Sold 93 shs ($2K)

Type	Security	Shares	Price	Value
Exercise	Nonqualified Stock Option (Right to buy)	93	$0.00	--
Exercise	Common Shares	93	$12.45	$1K
Sale	Common Shares	93	$21.00	$2K

Holdings After Transaction: Nonqualified Stock Option (Right to buy) — 5,079 shares (Direct); Common Shares — 189,169 shares (Direct)

Footnotes (1)

1. Price reported is the weighted average sale price for shares sold by the reporting owner on January 15, 2026. Shares were sold at prices ranging from $21.00 to $21.01. Vested in four equal annual installments beginning March 1, 2020.

Form 4 Insider Transactions: What Each Field Means →

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)
01/15/2026

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	01/15/2026		M		93	A	$12.45	189,169	D
Common Shares	01/15/2026		S		93	D	$21(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	01/15/2026		M			93	(2)	03/01/2029	Common Shares	93	$0	5,079	D

Explanation of Responses:

1. Price reported is the weighted average sale price for shares sold by the reporting owner on January 15, 2026. Shares were sold at prices ranging from $21.00 to $21.01.

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

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	01/16/2026
	** 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 transactions did Metallus (MTUS) report for January 15, 2026?

Metallus President & COO Kristopher R. Westbrooks exercised 93 Nonqualified Stock Options at an exercise price of $12.45 per share and sold 93 common shares at a weighted average price with individual sale prices between $21.00 and $21.01 on January 15, 2026.

How many Metallus (MTUS) shares does the President & COO own after this Form 4?

Following the reported transactions, Kristopher R. Westbrooks beneficially owned 189,076 common shares of Metallus Inc. directly, along with 5,079 Nonqualified Stock Options.

Was the Metallus (MTUS) insider sale made under a Rule 10b5-1 trading plan?

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

What do the transaction codes M and S mean in the Metallus (MTUS) Form 4?

In this Form 4, code M reflects the exercise of a Nonqualified Stock Option to acquire 93 common shares at $12.45 per share, and code S reflects the open-market sale of 93 common shares at a weighted average price with individual sales between $21.00 and $21.01.

How were the Metallus (MTUS) stock options held by the executive structured?

The reported Nonqualified Stock Option has an exercise price of $12.45 per share, is described as vested in four equal annual installments beginning March 1, 2020, and has an expiration date of March 1, 2029, with 5,079 derivative securities beneficially owned after the transaction.

What sale price information does the Metallus (MTUS) Form 4 provide?

The Form 4 notes that the reported sale price is a weighted average for shares sold on January 15, 2026, and that Metallus common shares were sold at prices ranging from $21.00 to $21.01.