| Year | Status | Category | Artwork |
| 2014 | Nominee | Best Cover Illustration - Hardcover | A Memory of Light, by Robert Jordan & Brandon Sanderson |
| 2012 | Nominee | Best Product Illustration | Gift from the Sea |
| 2011 | Winner | Best Cover Illustration - Hardcover | The Way of Kings |
| 2010 | Nominee | Best Interior Illustration | The Little Sisters of Eluria |
| 2010 | Nominee | Best Color Work - Unpublished | Lumen 5 |
| 2009 | Nominee | Best Color Work - Unpublished | The Seawall |
| 2008 | Nominee | Color Work, Unpublished | Rising |
| 2007 | Nominee | Color Work, Unpublished | Retrospection |
| 2004 | Winner | Best Color Work - Unpublished | She |
| 2003 | Nominee | Best Color Work: Unpublished | Bean Stalk |
| 2003 | Nominee | Best Cover Illustration: Hardback Book | Sorcery Rising |
| 2002 | Nominee | Best Color Work: Unpublished | Lumen 6.2 |
| 2002 | Nominee | Best Cover Illustration: Hardback Book | Otherland: Sea of Silver Light |
| 2001 | Winner | Best Color Work: Unpublished | Reach |
| 2001 | Nominee | Best Cover Illustration: Hardback Book | Tangled Up In Blue |
| 2000 | Winner | Best Cover Illustration: Hardback Book | Otherland: Mountain of Black Glass |
| 2000 | Nominee | Best Color Work: Unpublished | Peace |
| 1999 | Nominee | Best Cover Illustration: Hardback Book | Otherland: River of Blue Fire |
| 1998 | Nominee | Best Cover Illustration: Hardback Book | The Mageborn Traitor |
| 1997 | Winner | Best Cover Illustration: Hardback Book | The Golden Key |
| 1997 | Nominee | Best Cover Illustration: Paperback Book | Royal Assassin |
| 1997 | Nominee | Best Color Work: Unpublished | Lumen 4 |
| 1996 | Nominee | Best Cover Illustration: Hardback Book | Invader |
| 1996 | Nominee | Best Color Work: Unpublished | Malthusian Wave |
| 1995 | Nominee | Best Cover Illustration: Hardback Book | Foreigner |
| 1994 | Nominee | Best Color Work: Unpublished | The Leavetaking |
| 1994 | Nominee | Best Monochrome Work: Unpublished | The Apotheosis of War |
| 1994 | Nominee | Award for Artistic Achievement | - |
| 1993 | Nominee | Best Cover Illustration: Hardback Book | Illusion |
| 1993 | Winner | Best Cover Illustration: Magazine | Asimov's, Nov 1992 |
| 1993 | Nominee | Best Color Work: Unpublished | Subterraneans |
| 1992 | Winner | Best Cover Illustration: Hardback Book | The Summer Queen |
| 1992 | Nominee | Best Cover Illustration: Hardback Book | All the Weyrs of Pern |
| 1992 | Winner | Best Monochrome Work: Unpublished | Study for All the Weyrs of Pern |
| 1991 | Winner (tie) | Best Cover Illustration: Paperback Book | The Madness Season |
| 1991 | Nominee | Best Cover Illustration: Paperback Book | The Martian Chronicles |
| 1991 | Winner | Award for Artistic Achievement | - |
| 1990 | Nominee | Best Cover Illustration: Hardback Book | Paradise |
| 1990 | Nominee | Best Color Work: Unpublished | Passage the Red Step |
| 1989 | Nominee | Best Cover Illustration: Hardback Book | Catspaw |
| 1989 | Nominee | Award for Artistic Achievement | - |
| 1988 | Nominee | Best Cover Illustration: Hardback Book | Being a Green Mother |
| 1988 | Nominee | Best Cover Illustration: Paperback Book | In Conquest Born |
| 1988 | Nominee | Award for Artistic Achievement | - |
| 1987 | Winner | Best Cover Illustration: Paperback Book | The Cat Who Walked Through Walls |
| 1987 | Winner (tie) | Best Color Work: Unpublished | Sentinels |
| 1985 | Winner | Best Cover Illustration: Hardback Book | The Integral Trees |
| 1985 | Nominee | Best Cover Illustration: Hardback Book | Chanur's Venture |
| 1985 | Nominee | Best Cover Illustration: Hardback Book | The Final Encyclopedia |
| 1985 | Nominee | Best Cover Illustration: Hardback Book | Job: A Comedy of Justice |
| 1985 | Nominee | Best Cover Illustration: Paperback Book | Chanur's Venture |
| 1985 | Nominee | Best Cover Illustration: Paperback Book | Elric at the End of Time |
