PETROLEUM REFINING

Latest 4 SEC Filings
Statement of changes in beneficial ownership of securities

VALERO ENERGY CORP/TX, 4, 2001-01-09
VALERO ENERGY CORP/TX, 4, 2000-12-19
VALERO ENERGY CORP/TX, 4, 2000-12-11
VALERO ENERGY CORP/TX, 4, 2000-11-08
VALERO ENERGY CORP/TX, 4, 2000-11-07
ASHLAND INC, 4, 2000-10-06
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-09-11
ASHLAND INC, 4, 2000-09-08
VALERO ENERGY CORP/TX, 4, 2000-08-28
VALERO ENERGY CORP/TX, 4, 2000-08-17
ASHLAND INC, 4, 2000-08-07
ASHLAND INC, 4, 2000-07-10
VALERO ENERGY CORP/TX, 4, 2000-06-20
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-06-12
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-06-09
VALERO ENERGY CORP/TX, 4, 2000-06-05
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-05-22
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-05-10
ASHLAND INC, 4, 2000-05-09
ASHLAND INC, 4, 2000-04-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-03-10
ASHLAND INC, 4, 2000-03-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-02-14
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-02-11
VALERO ENERGY CORP/TX, 4, 2000-02-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-02-10
VALERO ENERGY CORP/TX, 4, 2000-02-09
ASHLAND INC, 4, 2000-02-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 2000-02-02
ASHLAND INC, 4, 2000-01-10
ASHLAND INC, 4, 2000-01-07
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-12-10
ASHLAND INC, 4, 1999-12-09
ASHLAND INC, 4, 1999-12-08
EXXON CORP, 4, 1999-11-30
VALERO ENERGY CORP/TX, 4, 1999-11-08
ASHLAND INC, 4, 1999-10-07
ASHLAND INC, 4, 1999-09-08
VALERO ENERGY CORP/TX, 4, 1999-09-02
VALERO ENERGY CORP/TX, 4, 1999-08-06
VALERO ENERGY CORP/TX, 4, 1999-08-05
ASHLAND INC, 4, 1999-08-05
ASHLAND INC, 4, 1999-07-09
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-06-14
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-06-10
VALERO ENERGY CORP/TX, 4, 1999-06-08
ASHLAND INC, 4, 1999-06-03
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-05-10
ASHLAND INC, 4, 1999-05-05
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-04-27
ASHLAND INC, 4, 1999-04-12
ASHLAND INC, 4, 1999-04-09
ASHLAND INC, 4, 1999-04-08
VALERO ENERGY CORP/TX, 4, 1999-03-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-03-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-03-05
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-03-03
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-03-02
VALERO ENERGY CORP/TX, 4, 1999-02-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1999-01-08
ASHLAND INC, 4, 1999-01-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-12-10
ASHLAND INC, 4, 1998-12-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-11-09
ASHLAND INC, 4, 1998-11-06
ASHLAND INC, 4, 1998-10-09
ASHLAND INC, 4, 1998-10-08
VALERO ENERGY CORP/TX, 4, 1998-09-21
ASHLAND INC, 4, 1998-09-09
ASHLAND INC, 4, 1998-08-10
VALERO ENERGY CORP/TX, 4, 1998-07-09
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-06-23
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-06-10
ASHLAND INC, 4, 1998-06-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-05-12
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-05-11
ASHLAND INC, 4, 1998-05-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-04-09
ASHLAND INC, 4, 1998-04-08
VALERO ENERGY CORP/TX, 4, 1998-03-30
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-03-10
ASHLAND INC, 4, 1998-03-09
VALERO ENERGY CORP/TX, 4, 1998-03-02
VALERO ENERGY CORP/TX, 4, 1998-02-20
VALERO ENERGY CORP/TX, 4, 1998-02-09
ASHLAND INC, 4, 1998-02-09
VALERO ENERGY CORP/TX, 4, 1998-01-12
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1998-01-09
ASHLAND INC, 4, 1998-01-09
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-12-10
ASHLAND INC, 4, 1997-12-09
ASHLAND INC, 4, 1997-11-07
ASHLAND INC, 4, 1997-10-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-10-09
ASHLAND INC, 4, 1997-09-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-08-29
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-08-08
ASHLAND INC, 4, 1997-08-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-07-10
ASHLAND INC, 4, 1997-07-10
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-06-12
ASHLAND INC, 4, 1997-06-09
ASHLAND INC, 4, 1997-05-09
ASHLAND INC, 4, 1997-04-10
ASHLAND INC, 4, 1997-04-08
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-03-10
ASHLAND INC, 4, 1997-02-18
ASHLAND INC, 4, 1997-02-06
ULTRAMAR DIAMOND SHAMROCK CORP, 4, 1997-01-21
ASHLAND INC, 4, 1997-01-08
ASHLAND INC, 4, 1996-12-06
DIAMOND SHAMROCK INC, 4, 1996-10-15


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