| SEGA Executive and R&D Management
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| Chairmen
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Isao Okawa (1984-2001) | Hajime Satomi (2004-current)
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| Presidents
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Hayao Nakayama (1984-1998) | Shoichiro Irimajiri (1998-2001) | Hideki Sato (2001-2003) | Hisao Oguchi (2003-2008) | Okitane Usui (2008-2012) | Naoya Tsurumi (2012-current) | Hideki Okamura (2014-current) | Haruki Satomi (2015-current)
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| R&D Managers
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Hisashi Suzuki (1983-2003) | Hideki Sato (1988-2001) | Yoji Ishii (1989-1999) | Tomio Takami (1988-1996) | Shinobu Toyoda (1989-2008) | Rikiya Nakagawa (1990-2003) | Yu Suzuki (1990-2009) | Hisao Oguchi (1990-2003) | Makoto Oshitani (1992-1999) | Hiroshi Aso (1992-current?) | Shoichiro Irimajiri (1992-1998) | Yukifumi Makino (1992-2004) | Shun Arai (1995-2002) | Noriyoshi Ohba (1995-2004) | Yuji Naka (1995-2006) | Tetsuya Mizuguchi (1995-2003) | Toshihiro Nagoshi (1998-current) | Masao Yoshimoto (1999-current) | Kenji Sasaki (1999-2005) | Hiroshi Kataoka (2001-current) | Mie Kumagai (2000-current) | Takayuki Kawagoe (2000-2013) | Kazunari Tsukamoto (2003-2008) | Hiroshi Uemera (2001-2013) | Makoto Uchida (2002-current) | Yukio Sugino (2004-current) | Hideki Okamura (2005-2008) | Masanao Maeda (2005-2012) | Hiroyuki Miyataki (2005-current) | Okitane Usui (2005-2008) | Akinori Nishiyama (2005-current) | Akira Nishino (2005-current) | Takaya Segawa (2005-current) | Atsushi Seimiya (2005-current) | Osamu Ohashi (2008-current) | Youchi Shimasato (2008-current) | Naoya Tsurumi (2010-2012) | Masayoshi Kikuchi (2010-current) | Yasuhiro Nishiyama (2010-current) | Takashi Iizuka (2010-current) | Haruki Satomi (2010-2015)
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| Sega West Executives
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David Rosen (1975-1996) | Bruce Lowoy (1986-1988) | Bruce Lowoy (1986-1988) | Michael Katz (1989-1991) | Robert Deith (1991-2001) | Tom Kalinske (1991-1996) | Bernie Stolar (1996-1999) | Jean François Cecillon (1998-2004) | Peter Moore (1999-2003) | Naoya Tsurumi (2001-2009) | Simon Jeffery (2005-2009) | Mike Hayes (2009-2012) | Jürgen Post (2012-current) | John Cheng (2012-current)
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