Metallus Inc. — Director's Dealing 2026

Jan 14, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Metallus Inc. (MTUS)
CIK: 0001598428
Period of Report: 2026-01-14

Reporting Person: WESTBROOKS KRISTOPHER R (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-14	Common Shares	M	5172	$12.45	Acquired	198248	Direct
2026-01-14	Common Shares	M	1760	$14.34	Acquired	200008	Direct
2026-01-14	Common Shares	S	10932	$20.06	Disposed	189076	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-14	Nonqualified Stock Option (Right to buy)	$12.45	M	5172	Disposed	2029-03-01	Common Shares (5172)	Direct
2026-01-14	Nonqualified Stock Option (Right to buy)	$14.34	M	1760	Disposed	2028-09-24	Common Shares (1760)	Direct

Footnotes

F1: 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.

F2: Vested in four equal annual installments beginning March 1, 2020.

F3: Vested in four equal annual installments beginning September 24, 2019.