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Livermore
Livermore
ZHEN

Metallus Inc.

MTUS
Exchange
NYSE
Industry
Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens)
SEC CIK
0001598428

No open-market purchases or sales by Metallus Inc. insiders were filed in the last 90 days; 202 institutions reported holding it in 13F filings for Q2 2026, worth $666.6M in total; no superinvestor holds it.

Holders of 5% or more of MTUS

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Metallus Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of MTUS
HolderLatest formStakeChangeFirst filedLatest filingFiling
BlackRock, Inc.13G/A15.10%6.32M shares−1.20 ppfrom 16.30%Apr 24, 20252 filingsOct 17, 2025SEC
Dimensional Fund Advisors LP13G/A6.80%2.86M shares–Apr 15, 20251 filingApr 15, 2025SEC
State Street Corp13G5.50%2.31M shares+0.70 ppfrom 4.80%Feb 5, 20252 filingsMay 13, 2025SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

5 Schedule 13D and 13G filings on Metallus Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on MTUS
Filed (ET)FilerFormStakeChangeEvent dateFiling
Oct 17, 20256:41 PM ETBlackRock, Inc.13G/A15.10%6.32M shares−1.20 ppfrom 16.30%Sep 30, 2025SEC
May 13, 202511:43 AM ETState Street Corp13G5.50%2.31M shares+0.70 ppfrom 4.80%Mar 31, 2025SEC
Apr 24, 20259:52 AM ETBlackRock, Inc.13G/A16.30%6.87M shares–Mar 31, 2025SEC
Apr 15, 202512:18 PM ETDimensional Fund Advisors LP13G/A6.80%2.86M shares–Mar 31, 2025SEC
Feb 5, 20257:48 AM ETState Street Corp13G4.80%2.03M sharesNewBelow 5%Dec 31, 2024SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Metallus Inc. shares.

No Form 144 notices for Metallus Inc. are on file.