Metallus MTUS Insider Ownership

Updated Oct 10, 2026

Across the past 12 months, open-market trades by Metallus insiders were all sales, totaling $2.28 million (112.77K shares).

• A count shows 3 insiders selling MTUS stock on the open market over the past 12 months and none buying.
• The largest open-market sales of MTUS in the past 12 months were by Michael S. Williams (Chief Executive Officer), totaling $1.84 million (91.67K shares), most recently on October 5, 2026.
• In transactions other than open-market trades, Metallus insiders received 221.67K shares in stock awards, acquired 20.3K shares through option exercises and conversions and gave up 86.84K shares to cover taxes or exercise prices over the past 12 months.
• Per Business Quant data, Metallus insiders hold 2.04Mn shares in total based on their latest Form 4 filings, down 1.45% from 2.07Mn shares at the end of Q2 2026 and up 6.59% from 1.92Mn shares at the end of Q3 2025.
• MTUS's insiders hold all 2.04Mn shares directly, in their own names, with no indirect holdings.
• The insider holdings in Metallus belong to 16 insiders who have reported on Form 4 within the past two years.
• Metallus' three biggest insider holders are Michael S. Williams (Chief Executive Officer, 709.86K shares), Kristopher R. Westbrooks (President & COO, 214.08K shares) and Ronald A. Rice (Director, 151.82K shares), based on their latest Form 4 filings.
• The largest insider, Michael S. Williams, holds 34.74% of MTUS's insider total.
• Institutional holders reported 85.76% of Metallus' outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 4.91%, and other investors, including the public, hold the remaining 9.33%.
• Over the past 12 months, 16 insiders reported transactions in Metallus stock in 37 Form 4 filings.
• Insider figures for MTUS include Form 4 filings through October 5, 2026.