Metallus Inc. — Director's Dealing 2026

Jan 16, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Metallus Inc. (MTUS)
CIK: 0001598428
Period of Report: 2026-01-15

Reporting Person: WESTBROOKS KRISTOPHER R (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-15	Common Shares	M	93	$12.45	Acquired	189169	Direct
2026-01-15	Common Shares	S	93	$21	Disposed	189076	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-15	Nonqualified Stock Option (Right to buy)	$12.45	M	93	Disposed	2029-03-01	Common Shares (93)	Direct

Footnotes

F1: 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.

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