The following are significant dates in Seagate's history.
| September 2010 | Introduces Industry’s First 12TB, 4 Bay Network Storage Server for Small Businesses |
| September 2010 | |
| July 2010 | |
| June 2010 | Seagate Breaks Capacity Ceiling with First 3TB External Desktop Drive |
| May 2010 | World’s Fastest Hard Drive for Laptops: Momentus XT Solid-State Hybrid |
| May 2010 | A New Era of External Storage: GoFlex Family of Storage Solutions |
| April 2010 | Seagate Offers FreeAgent Go Hard Drives Preloaded with 20 Hit Films |
| December 2009 | |
| December 2009 | |
| September 2009 | |
| March 2009 | New BlackArmor Family of Storage Solutions for Small Businesses |
| July 2008 | |
| April 2008 | |
| March 2008 | |
| March 2007 | |
| October 2007 | |
| March 2007 | Seagate Ships World's First Laptop Drives with Full Disc Encryption |
| May 2006 | |
| April 2006 | Introduces World's First 750GB Disc Drive |
| January 2006 | |
| September 2005 | Seagate acquires Mirra Inc. |
| August 2005 | Seagate wins "Company of the Year" and "Best Product Innovation" ARC Awards from VarBusiness Magazine |
| June 2005 | Seagate does it again… spurs innovation with 10 new, groundbreaking hard disc drives: first perpendicular recording 2.5-inch drive and first drive with Full Disc Encryption data security |
| May 2005 | Seagate honoured for advancement of women in the workplace |
| March 2005 | Seagate ships its 10-millionth 15K-RPM disc drive |
| February 2005 | PC World names Seagate Barracuda 7200 Best Hard Drive |
| June 2004 | Seagate launches 12 new products -- an unprecedented array of disc drives to target a wide range of applications such as MP3 players, DVRs, consumer electronics, notebook computers, PCs, servers and corporate data centres |
| February 2004 | Seagate announces Savvio, the industry's first 2.5-inch enterprise disc drive |
| June 2003 | Seagate enters notebook market with Momentus 2.5-inch disc drive |
| December 2002 | Seagate re-enters the public market (NYSE: STX) |
| November 2002 | Seagate delivers industry's first Serial ATA disc drive -- the Barracuda ATA V |
| November 2002 | Seagate demonstrates perpendicular recording areal density of 100 gigabits per square inch |
| August 2002 | Seagate successfully demos HAMR technology - HAMR aims to increase areal density more than 100-fold |
| May 2002 | Seagate announces Cheetah 15K.3 - its third generation 15K-RPM drive one year ahead of the competition |
| October 2001 | Microsoft Xbox ships with Seagate disc drives |
| March 2001 | Second-generation Cheetah X15 introduced – one year ahead of the competition |
| November 2000 | Seagate introduces the world's highest capacity disc drive – Barracuda 180 Gbyte |
| February 2000 | Seagate introduces world's first 15K-RPM disc drive – Cheetah X15 |
| January 2000 | DISHPlayer 500 integrates Seagate disc drives – Seagate is world's largest digital video recorder and consumer data storage provider |
| April 1999 | Seagate ships its 250-millionth disc drive |
| March 1998 | Seagate produces its one-billionth magnetic recording head |
| October 1997 | Company introduces world's first fibre channel interface disc drive |
| October 1997 | Seagate introduces first 7,200-RPM, Ultra ATA drive for desktop computers |
| October 1996 | Seagate introduces the first 10K-RPM drive – Cheetah family |
| February 1996 | Seagate and Conner Peripherals merge to form the world's largest independent storage device manufacturer |
| May 1993 | Seagate ships its 50-millionth disc drive |
| November 1992 | Seagate is first to market with shock–sensing technology for 2.5–inch disc drives |
| November 1992 | Seagate introduces the first 7,200-RPM disc drive |
| 1989 | Seagate acquires Imprimis Technology – High Capacity Drives and Components |
| 1980 | Seagate builds industry's first 5.25–inch hard drive |
| 1979 | Seagate founded as disc drive manufacturer |
