| ArcelorMittal +1 co-filerFormer 10% Owner · 1 transaction | — | 116.37M†as of Feb 2021 | — | — | 40.00M |
| Falcone Philip +6 co-filersReporting owner · 7 transactions | — | 25.62M†as of Jun 2008 | — | 2.74M | — |
| Falcone Philip +9 co-filersReporting owner · 34 transactions | — | 6.00Mas of Feb 2009 | — | 1.75M | 3.44M |
| Falcone Philip +3 co-filers10% owner · 6 transactions | — | 5.99M†as of May 2008 | — | 1.04M | — |
| Goncalves LourencoChairman, President & CEO, Director · 50 transactions | — | 3.02M† | 7.82M | 1.22M | 3.19M |
| Ireland James D IIIDirector · 7 transactions | — | 750.6K†as of Jan 2010 | 3.8K | — | 6.0K |
| Smith Clifford TEVP & Chief Operating Officer · 61 transactions | — | 660.6K† | 1.35M | — | 234.5K |
| Fedor Terry G.EVP, Engineering & Technology · 41 transactions | — | 567.3K | 932.6K | — | 27.4K |
| Koci KeithEVP & President, CC Services · 28 transactions | — | 527.5K | 507.7K | 148.4K | — |
| Graham James DEVP Chief Legal Admin & Sec · 47 transactions | — | 478.3K | 939.8K | — | 144.8K |
| Harapiak MauriceEVP, HR & Chief Admin Officer · 26 transactions | — | 472.1Kas of Feb 2022 | 712.0K | — | — |
| Tompkins P KellyEVP & Chief Operating Officer · 37 transactions | — | 427.3Kas of Dec 2017 | 544.0K | 7.0K | — |
| Stoliar GabrielDirector · 102 transactions | — | 288.4K† | 301.8K | 29.4K | — |
| Mee Terrence REVP, Global Commercial · 31 transactions | — | 243.9Kas of Feb 2019 | 356.1K | — | 1.0K |
| Michael Ralph S IIIDirector · 12 transactions | — | 233.4K | 193.4K | 40.0K | — |
| Carrabba Joseph APresident & CEO, Director · 44 transactions | — | 231.7K†as of Nov 2013 | 532.0K | — | 160.0K |
| Forrester Traci LEVP, Environ & Sustainability · 17 transactions | — | 209.8Kas of Feb 2025 | 229.1K | — | — |
| Flanagan Timothy KEVP, Chief Financial Officer · 21 transactions | — | 207.0Kas of May 2018 | 249.6K | — | — |
| Fisher Robert P JrDirector · 50 transactions | — | 190.0Kas of Apr 2024 | 150.0K | 40.0K | — |
| Goncalves Celso L JrEVP, CFO · 20 transactions | — | 184.5K | 354.3K | 38.8K | 214.3K |
| Trethewey James AS.V.P.- Bus. Development · 9 transactions | — | 162.6K†as of Mar 2007 | 23.8K | — | 10.0K |
| Boor William CEVP Corp Dev & Chief Strat Off · 41 transactions | — | 148.8K†as of Aug 2014 | 133.9K | — | 10.7K |
| Gallagher Donald JEVP, Pres. Global Commercial · 133 transactions | — | 140.2K†as of Nov 2013 | 196.3K | — | 118.4K |
| Gerber William KDirector · 6 transactions | — | 137.6Kas of Apr 2023 | 137.6K | — | — |
| Yocum Arlene MDirector · 11 transactions | — | 136.5K | 133.0K | 3.5K | — |
| Baldwin John TDirector · 19 transactions | — | 133.2Kas of Mar 2025 | 72.9K | 80.3K | 20.0K |
| Bloom Ron A.Director · 15 transactions | — | 123.1K | 74.7K | 50.0K | 1.6K |
| Brlas LaurieEVP & President Global Ops · 31 transactions | — | 119.8K†as of Mar 2013 | 161.5K | — | 13.0K |
| Taylor Douglas CDirector · 53 transactions | — | 119.1Kas of Apr 2025 | 215.9K | 30.6K | 8.03M |
| Green Susan MirandaDirector · 50 transactions | — | 116.7Kas of Apr 2025 | 171.1K | 1.8K | 61.0K |
| Rutkowski Joseph ADirector · 11 transactions | — | 111.3Kas of Apr 2019 | 86.8K | 16.5K | — |
| Siegal Michael DDirector · 31 transactions | — | 109.5K†as of Jan 2020 | 77.8K | 31.5K | 2.5K |
| Cebula R ChristopherSVP Chief Admin Off Steel, CAO · 10 transactions | — | 104.2Kas of Mar 2020 | 66.4K | — | — |
| Brinzo John SDirector · 127 transactions | — | 101.9K†as of Mar 2007 | 135.1K | — | 228.8K |
| Miller Janet LDirector · 32 transactions | — | 101.8Kas of Apr 2024 | 83.7K | 18.1K | — |
| Halverson Gary BPresident & COO, Director · 2 transactions | — | 97.6Kas of Feb 2014 | 97.6K | — | — |
| Vetor Duke DSVP, Global Operations Service · 40 transactions | — | 95.6K†as of Feb 2014 | 76.7K | — | 16.6K |
| Paradie Terrance MEVP, CFO & Treasurer · 33 transactions | — | 89.7K†as of Feb 2015 | 140.0K | — | 12.7K |
| Brake WilliamEVP, Global Metallics · 13 transactions | — | 85.3K†as of Feb 2012 | 99.4K | — | — |
| Calfee William RExec. V.P. Commercial Projects · 260 transactions | — | 74.7K†as of Mar 2011 | 107.8K | — | 113.6K |
| Cronin Jane M.Director · 8 transactions | — | 74.1K | 54.1K | 10.0K | — |
| Harlan M AnnDirector · 14 transactions | — | 72.1Kas of Apr 2021 | 63.1K | 8.7K | — |
| Floriani Kimberly ASVP, Controller & CAO · 15 transactions | — | 68.9K | 65.4K | — | — |
| Webb David LEVP, Global Coal · 12 transactions | — | 58.5Kas of Feb 2015 | 84.3K | — | — |
| Camara EdilsonDirector · 3 transactions | — | 57.3K | 21.0K | 19.7K | — |
| Oren BenDirector · 4 transactions | — | 48.1K | 41.4K | 6.7K | — |
| Gunning David HVice Chairman, Director · 27 transactions | — | 44.5Kas of May 2007 | 57.5K | — | 51.7K |
| Kirsch James FChairman, Director · 7 transactions | — | 40.0Kas of Feb 2014 | 85.4K | — | — |
| Phillips RogerDirector · 6 transactions | — | 39.7Kas of May 2011 | 6.0K | — | — |
| Hawk George W JrGeneral Counsel & Secretary · 8 transactions | — | 36.9Kas of Mar 2010 | 34.7K | — | — |
| Sawyer James SDirector · 3 transactions | — | 34.7Kas of Nov 2015 | 9.7K | 25.0K | — |
| Kummer Randy LSenior VP-Human Resources · 21 transactions | — | 32.8Kas of Mar 2008 | 39.7K | — | 20.0K |
| Blake David BSVP, NAIO Operations · 11 transactions | — | 29.2K†as of Aug 2013 | 31.6K | — | 3.0K |
| Rychel Eric MDirector · 6 transactions | — | 28.8Kas of Apr 2020 | 6.8K | 21.0K | — |
| Michaud James REVP, HR & Chief HR Officer · 10 transactions | — | 27.4K†as of Feb 2014 | 15.5K | 500 | — |
| Raguz Steven MEVP Corp Strategy & Comm & CSO · 13 transactions | — | 25.7K†as of Mar 2013 | 24.0K | — | 5.8K |
| Cambre Ronald CDirector · 14 transactions | — | 24.3Kas of May 2010 | 6.2K | — | — |
| Eldridge Barry JDirector · 102 transactions | — | 23.9Kas of Oct 2013 | 16.8K | — | — |
| Cunningham Susan MDirector · 42 transactions | — | 20.2Kas of Oct 2013 | 15.3K | — | — |
| Schwartz Alan GDirector · 35 transactions | — | 19.8Kas of Apr 2012 | 8.4K | — | 7.5K |
| Aderhold Ronald KSVP & Chief Info. Officer · 1 transaction | — | 18.1Kas of Feb 2014 | — | — | — |
| McAllister Francis RDirector · 8 transactions | — | 17.2Kas of May 2013 | 11.5K | — | — |
| Leroux Robert JVice President- Finance · 28 transactions | — | 16.3K†as of Mar 2008 | 16.8K | — | 13.6K |
| Gluski AndresDirector · 18 transactions | — | 12.0Kas of Nov 2013 | 8.2K | 3.5K | — |
| Henry Janice KDirector · 9 transactions | — | 11.2Kas of Oct 2013 | 9.0K | — | — |
| Mehan Richard R.SVP, Pres. & CEO Cliffs Asia-P · 3 transactions | — | 10.6Kas of Nov 2010 | — | — | 8.0K |
| McFadden William JayVP, Global Coal & Alt. Energy · 3 transactions | — | 7.8Kas of Mar 2012 | 1.5K | — | — |
| Williams Colin GrantVP, Asia Pacific Iron Ore · 2 transactions | — | 7.7Kas of Mar 2013 | 2.2K | — | — |
| Cheverine CarolynVP, GC & Secretary · 5 transactions | — | 7.3K†as of Feb 2014 | 3.1K | 400 | — |
| Ross Richard AndrewDirector · 10 transactions | — | 6.7Kas of Apr 2013 | 3.1K | 3.0K | — |
| Price DuncanEVP,Global Operations · 2 transactions | — | 6.5Kas of Mar 2012 | 6.5K | — | — |
| Baisden Steve R.VP, Investor Relations & Comm. · 10 transactions | — | 6.4Kas of Mar 2012 | 7.4K | — | 1.4K |
| Sullivan Timothy WDirector · 4 transactions | — | 5.8Kas of Oct 2013 | 5.0K | — | — |
| Gaumond Mark E.Director · 1 transaction | — | 5.0Kas of Oct 2013 | 288.32 | — | — |
| Hart William S.VP, Global Marketing · 2 transactions | — | 4.4Kas of Mar 2013 | 2.1K | — | — |
| Riederer Richard KDirector · 11 transactions | — | 2.5Kas of Oct 2013 | 798.23 | — | 9.7K |
| Gunning Gina KGC, Corp Affairs & Secretary · 1 transaction | — | 1.1Kas of Mar 2011 | 820 | — | — |