Christine S. Breves

Companies

• MPLXBoard member Nov 23, 2022 to now¹
• RXO, Inc.Board member Nov 1, 2022 to now²
• Sylvamo CorpBoard member Oct 12, 2021 to now³
• U.S. SteelChief financial officer Feb 27, 2020 to Apr 18, 2022⁴
• U.S. SteelVP & Supply Chain Officer Apr 28, 2017 to Jun 4, 2019⁵

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• RXRXO, Inc. RXO34,275 shares⁶$981.1K at $28.62Jan 2, 2026
• MMPLX MPLX15,038 shares⁷$875.1K at $58.19Aug 14, 2026
• SSylvamo Corp SLVM19,076 shares⁸$598.6K at $31.38May 15, 2026
• U.S. Steel X220,430 shares⁹Apr 18, 2022

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 14, 2026Granted 219 shares of MPLX⁷
• May 15, 2026Granted 277 shares of MPLX¹⁰
• May 15, 2026Granted 3,876 shares at $38.70 of Sylvamo Corp⁸
• Apr 30, 2026Granted 2,247 shares of MPLX¹¹
• Apr 30, 2026Granted 2,696 shares of MPLX¹²
• Feb 17, 2026Granted 218 shares of MPLX¹³
• Jan 2, 2026Exercised options 7,745 shares of RXO, Inc.⁶
• Nov 14, 2025Granted 230 shares of MPLX¹⁴
• Aug 15, 2025Granted 214 shares of MPLX¹⁵
• May 16, 2025Granted 201 shares of MPLX¹⁶
• May 15, 2025Granted 2,655 shares at $56.51 of Sylvamo Corp¹⁷
• May 1, 2025Granted 2,481 shares of MPLX¹⁸
• Apr 1, 2025Granted 192 shares of MPLX¹⁹
• Feb 14, 2025Granted 145 shares of MPLX²⁰
• Jan 2, 2025Granted 642 shares of MPLX²¹
• Jan 2, 2025Exercised options 8,045 shares of RXO, Inc.²²
• Nov 15, 2024Granted 150 shares of MPLX²³
• Oct 1, 2024Granted 699 shares of MPLX²⁴
• Aug 16, 2024Granted 131 shares of MPLX²⁵
• Jul 1, 2024Granted 729 shares of MPLX²⁶
• May 16, 2024Granted 1,779 shares at $70.28 of Sylvamo Corp²⁷
• May 13, 2024Granted 117 shares of MPLX²⁸
• Apr 1, 2024Granted 756 shares of MPLX²⁹
• Feb 14, 2024Granted 107 shares of MPLX³⁰
• Jan 3, 2024Exercised options 11,537 shares of RXO, Inc.³¹