| ExxonMobil | environmental violation | 2005 | EPA | $589,400,000 |
| Exxon Corporation | environmental violation | 2008 | private lawsuit-federal | $507,500,000 |
| Exxon Mobil | environmental violation | 2017 | EPA | $302,500,000 |
| ExxonMobil | environmental violation | 2013 | NH-AG | $236,000,000 |
| ExxonMobil | environmental violation | 2015 | NJ-AG | $225,000,000 |
| Mobil Natural Gas Inc. | False Claims Act and related | 2010 | DOJ_CIVIL | $32,200,000 |
| Exxon Mobil | environmental violation | 2003 | private lawsuit-state | $30,800,000 |
| ExxonMobil Corporation | environmental violation | 2010 | NY-AG | $25,000,000 |
| Exxon Mobil Corporation | environmental violation | 2021 | private lawsuit-federal | $25,000,000 |
| XTO Energy Inc | environmental violation | 2013 | EPA | $20,100,000 |
| ExxonMobil | environmental violation | 2005 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $18,400,000 |
| ExxonMobil Pipeline Co. | environmental violation | 2016 | DOJ | $12,000,000 |
| ExxonMobil Pipeline Co. | environmental violation | 2016 | MT-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $12,000,000 |
| Exxon Corporation | environmental violation | 2001 | private lawsuit-state | $12,000,000 |
| ExxonMobil Oil Corporation | environmental violation | 2021 | EPA | $11,515,463 |
| Exxon Mobil Corporation | environmental violation | 2001 | EPA | $11,200,000 |
| MOBIL OIL CORPORATION | environmental violation | 2002 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $11,200,000 |
| Exxon Mobil Corporation | environmental violation | 2016 | NY-AG | $10,750,000 |
| ExxonMobil | environmental violation | 2022 | NJ-AG | $9,500,000 |
| Exxon Mobil | environmental violation | 2008 | private lawsuit-state | $8,500,000 |
| Exxonmobil Oil Corporation | environmental violation | 2004 | CA-SCAQMD | $8,250,000 |
| Exxonmobil Oil Corporation | environmental violation | 2014 | CA-SCAQMD | $8,100,000 |
| ExxonMobil Oil Corporation, | environmental violation | 2013 | NY-AG | $8,050,000 |
| Exxon Mobil Corporation | False Claims Act and related | 2001 | DOJ_CIVIL | $7,000,000 |
| Exxon Mobil | environmental violation | 2012 | private lawsuit-state | $7,000,000 |
| ExxonMobil Pipeline Company | environmental violation | 2008 | USAO | $6,179,634 |
| ExxonMobil | environmental violation | 2005 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $6,155,902 |
| ExxonMobil | environmental violation | 2008 | EPA | $6,100,000 |
| Mobil Exploration and Producing U.S. Inc | environmental violation | 2004 | EPA | $5,542,000 |
| XTO Energy Inc. | environmental violation | 2014 | EPA | $5,300,000 |
| EXXON MOBIL CORPORATION | environmental violation | 2021 | EPA | $5,144,552 |
| ExxonMobil Baytown Chemical Company | environmental violation | 2018 | EPA | $5,072,000 |
| ExxonMobil Pipeline Company and Mobil Pipe Line Company | environmental violation | 2015 | EPA | $5,000,000 |
| Exxonmobil Oil Corporation | environmental violation | 2016 | CA-SCAQMD | $4,712,500 |
| ExxonMobil | environmental violation | 2002 | EPA | $4,700,000 |
| Exxon Mobil - Mayflower, AR | environmental violation | 2015 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $4,190,000 |
| ExxonMobil Corporation | environmental violation | 2008 | MD-AG | $4,000,000 |
| Exxon-Mobil Corporation | environmental violation | 2005 | NY-AG | $3,200,000 |
| ExxonMobil Corp. | environmental violation | 2010 | MA-AG | $3,100,000 |
| Exxon Mobil Corporation | environmental violation | 2008 | EPA | $2,642,198 |
| Mobil Oil Guam Inc. and Mobil Oil Mariana Islands Inc. | environmental violation | 2010 | EPA | $2,400,000 |
| Exxon Mobil Corp. | environmental violation | 2010 | WY-ENV | $2,400,000 |
| ExxonMobil Pipeline Company | environmental violation | 2012 | MT-ENV | $2,360,000 |
| ExxonMobil | environmental violation | 2013 | LA-ENV | $2,329,000 |
| Exxon Mobil Corporation | environmental violation | 2014 | LA-ENV | $2,329,000 |
| XTO ENERGY, INC (SB) | environmental violation | 2015 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $2,300,000 |
| Exxonmobil Oil Corporation | environmental violation | 2007 | CA-SCAQMD | $2,250,000 |
| ExxonMobil | environmental violation | 2005 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $2,145,616 |
| Exxon Mobil | economic sanction violation | 2017 | OFAC | $2,000,000 |
| ExxonMobil Corporation | False Claims Act and related | 2007 | NH-AG | $2,000,000 |
| EXXONMOBIL REFINERY COMPLEX | environmental violation | 2006 | EPA | $2,000,000 |
| ExxonMobil | environmental violation | 2015 | AR-AG | $1,880,000 |
| Mobil Oil Corp. | environmental violation | 2002 | CA-SCAQMD | $1,750,000 |
| ExxonMobil Oil Corp. | wage and hour violation | 2020 | private lawsuit-federal | $1,491,372 |
| ExxonMobil Pipeline Company | environmental violation | 2014 | EPA | $1,437,120 |
| Exxon Mobil - Torbert, LA | environmental violation | 2014 | EPA | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $1,437,120 |
| ExxonMobil Beaumont Oil Refinery | environmental violation | 2019 | EPA | $1,346,000 |
| EXXONMOBIL | environmental violation | 2019 | EPA | $1,050,000 |
| EXXONMOBIL PIPELINE CO | environmental violation | 2013 | PHMSA | $1,045,000 |
| ExxonMobil | environmental violation | 2005 | MI-AG | $1,025,000 |
| XTO Energy | federal leasing royalty violation | 2018 | ONRR | $890,000 |
| MOBIL EXPLORATION AND PRODUCING U.S. INC | environmental violation | 2004 | EPA | $842,000 |
| Exxonmobil Oil Corporation | environmental violation | 2016 | CA-SCAQMD | $830,000 |
| ExxonMobil Corp. | workplace whistleblower retaliation | 2022 | OSHA | $800,000 |
| ExxonMobil Oil Corporation | environmental violation | 2010 | CT-ENV | $790,000 |
| XTO Energy Inc. | environmental violation | 2018 | EPA | $770,000 |
| ExxonMobil Oil Corporation | environmental violation | 2005 | EPA | $769,393 |
| Exxon Mobil | wage and hour violation | 2011 | private lawsuit-federal | $750,000 |
| Exxon Mobil Corporation | environmental violation | 2005 | IL-ENV | $650,000 |
| ExxonMobil Oil Corporation | environmental violation | 2019 | EPA | $616,000 |
| Exxon-Mobil Corporation | environmental violation | 2009 | EPA | $600,000 |
| EXXONMOBIL REFINING AND SUPPLY COMPANY | workplace safety or health violation | 2015 | OSHA | $566,600 |
| Exxon/Mobil Oil Corporation | environmental violation | 2003 | CA-SCAQMD | $500,000 |
| EXXON MOBIL TORRANCE REFINERY | environmental violation | 2000 | EPA | $500,000 |
| Exxon Mobil Corporation | environmental violation | 2009 | TX-ENV | $496,201 |
| ExxonMobil Oil Corporation | environmental violation | 2019 | CA-ARB | $493,500 |
| ExxonMobil Pipeline Co | environmental violation | 2014 | LA-ENV | $471,174 |
| Exxonmobil Oil Corporation | environmental violation | 2008 | CA-SCAQMD | $469,500 |
| MOBIL EXPORATION AND PRODUCING U.S. INC. | environmental violation | 2005 | EPA | $449,849 |
| ExxonMobil Oil Corporation | environmental violation | 2015 | EPA | $425,000 |
| ExxonMobil Corp. | environmental violation | 2001 | NM-AG | $400,000 |
| XTO Energy Inc. | environmental violation | 2016 | PA-AG | $400,000 |
| Exxon Mobil Corporation | environmental violation | 2012 | LA-ENV | $360,000 |
| ExxonMobil Chemical | environmental violation | 2003 | LA-ENV | $350,000 |
| XTO Energy, Inc. | environmental violation | 2018 | EPA | $320,000 |
| Exxon Mobil | environmental violation | 2019 | VT-AG | $316,667 |
| XTO ENERGY INC | environmental violation | 2010 | PA-ENV | $300,000 |
| EXXON MOBIL OIL CORP | environmental violation | 2012 | IL-ENV | $300,000 |
| EXXON MOBIL OIL CORP | environmental violation | 2016 | IL-ENV | $291,173 |
| ExxonMobil Oil Corp. | environmental violation | 2005 | IL-AG | $281,846 |
| Mobil Oil Exploration & Producing, U. S. | labor relations violation | 2002 | NLRB | $280,000 |
| Exxon Mobil Corp. | environmental violation | 2013 | TX-ENV | $273,125 |
| Exxonmobil Oil Corporation | environmental violation | 2019 | CA-SCAQMD | $268,500 |
| Exxon Mobil Corporation | environmental violation | 2012 | LA-ENV | $250,000 |
| Exxonmobil Oil Corporation | environmental violation | 2012 | CA-SCAQMD | $250,000 |
| ExxonMobil Corporation | environmental violation | 2001 | CT-ENV | $245,000 |
| XTO Energy Inc. | environmental violation | 2010 | TX-ENV | $237,247 |
| XTO Energy Inc. | environmental violation | 2008 | CO-DPHE | $228,400 |
| EXXONMOBIL PRODUCTION COMPANY | environmental violation | 2006 | EPA | $203,917 |
| ExxonMobil Oil Corporation | environmental violation | 2016 | TX-ENV | $200,859 |
| ExxonMobil Oil Corporation | environmental violation | 2003 | EPA | $200,000 |