Kristopher R. Westbrooks - 03 Feb 2026 Form 4 Insider Report for Metallus Inc. (MTUS)

Reporting relationship: President & COO
Issuer ticker: MTUS
Reported as of: 03 Feb 2026
Net transaction value: -$44,110
SEC form: 4
Accepted by SEC: 04 Feb 2026, 19:00:03 UTC
Prior SEC filing: 16 Jan 2026
Next SEC filing: 12 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Kristine C. Syrvalin, as Attorney-in-Fact

Key filing fact

Kristopher R. Westbrooks filed Form 4 for Metallus Inc. (MTUS) on 04 Feb 2026.

Key facts

This page summarizes Kristopher R. Westbrooks's Form 4 filing for Metallus Inc. (MTUS).
6 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 04 Feb 2026, 19:00.

Change

Previous filing in this sequence was filed on 16 Jan 2026.
Current net transaction value: -$44,110.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001638813 Primary reporting owner

WESTBROOKS KRISTOPHER R

Relationship: President & COO
Address: 1835 DUEBER AVE. SW, CANTON
Signature: /s/ Kristine C. Syrvalin, as Attorney-in-Fact
Signature date: 04 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MTUS transaction

Common Shares

Options Exercise

Transaction value: $36,740
Shares: +2,951
Change %: +1.6%
Price: $12.45
Shares after: 192,027
Date: 03 Feb 2026
Ownership: Direct

MTUS transaction

Common Shares

Sale

Transaction value: $62,060
Shares: -2,951
Change %: -1.5%
Price: $21.03
Shares after: 189,076
Date: 03 Feb 2026
Ownership: Direct
Footnotes: F1

MTUS transaction

Common Shares

Options Exercise

Transaction value: $26,494
Shares: +2,128
Change %: +1.1%
Price: $12.45
Shares after: 191,204
Date: 04 Feb 2026
Ownership: Direct

MTUS transaction

Common Shares

Sale

Transaction value: $45,284
Shares: -2,128
Change %: -1.1%
Price: $21.28
Shares after: 189,076
Date: 04 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MTUS transaction Derivative

Nonqualified Stock Option (Right to buy)

Options Exercise

Transaction value: $0
Shares: -2,951
Change %: -58%
Price: $0.000000
Shares after: 2,128
Date: 03 Feb 2026
Ownership: Direct
Underlying class: Common Shares
Underlying amount: 2,951
Exercise price: $12.45
Footnotes: F3

MTUS transaction Derivative

Nonqualified Stock Option (Right to buy)

Options Exercise

Transaction value: $0
Shares: -2,128
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 04 Feb 2026
Ownership: Direct
Underlying class: Common Shares
Underlying amount: 2,128
Exercise price: $12.45
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

Price reported is the weighted average sale price for shares sold by the reporting owner on February 3, 2026. Shares were sold at a variety of prices ranging from $21.00 to $21.17.

Footnote F2

Price reported is the weighted average sale price for shares sold by the reporting owner on February 4, 2026. Shares were sold at a variety of prices ranging from $21.00 to $21.54.

Footnote F3

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

SEC 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.