| Latest Transactions |
| DATE | TRANSACTION |
| November 21, 2009 | Purchased the contracts of OF Ezequiel Carrera, RHP Danny Cortes, RHP Ricky Orta, RHP JC Ramirez, RHP Anthony Varvaro and LHP Edward Paredes to the 40-man roster. Reinstated LHP Ryan Feierabend and RHP Sean White from the 60-day DL. Sent INF Josh Wilson outright to Tacoma (PCL). |
| November 13, 2009 | Agreed to terms with SS Jack Wilson on a two-year contract. |
| November 12, 2009 | Agreed to terms with DH Ken Griffey on a one-year contract. |
| November 6, 2009 | Claimed RHP Yusmeiro Petit off waivers from Arizona. |
| October 30, 2009 | Activated LHP Cesar Jimenez from 60-day DL and sent him outright to Tacoma (PCL). Sent INF Bryan LaHair, RHP Randy Messenger and RHP Marwin Vega outright to Tacoma. |
| October 20, 2009 | Announced C Kenji Johjima has opted out of the final two years of his contract. Announced third-base coach Bruce Hines will not return for the 2010 season. |
| September 30, 2009 | Activated 1B Russell Branyan from the 15-day DL. |
| September 14, 2009 | Purchased the contract of C Adam Moore from Tacoma (PCL). Recalled INF Matt Tuiasosopo and LHP Garrett Olson from Tacoma. Released RHP Stephen Kahn. |
| September 9, 2009 | RP Brandon Morrow called up from minors |
| September 1, 2009 | 1B Mike Carp called up from minors; SP Jason Vargas called up from minors |
| August 29, 2009 | 1B Russell Branyan placed on 15-day DL; RP Chris Jakubauskas called up from minors |
| August 20, 2009 | Activated third baseman Bill Hall; optioned pitcher Garrett Olson to Tacoma of the Pacific Coast League (AAA); transferred pitcher Erik Bedard to the 60-day disabled list. |
| August 19, 2009 | Signed pitcher Tyler Blandford; agreed to terms with first baseman/outfilder Dustin Ackley. |
| August 8, 2009 | Optioned pitcher Jason Vargas to Tacoma of the Pacific Coast League (AAA); purchased the contract of pitcher Doug Fister from Tacoma. |
| July 27, 2009 | Placed pitcher Erik Bedard on the 15-day disabled list; recalled pitcher Jason Vargas from Tacoma of the Pacific Coast League (AAA). |
| July 26, 2009 | Designated outfielder Wladimir Balentien for assignment; purchased the contract of outfielder Michael Saunders from Tacoma of the Pacific Coast League (AAA). |
| July 25, 2009 | Designated pitcher Roy Corcoran for assignment; sent third baseman Josh Wilson outright to Tacoma of the Pacific Coast League (AAA); recalled picher Ryan Rowland-Smith from Tacoma. |
| July 22, 2009 | Activated first-baseman/designated hitter Mike Sweeney from the 15-day disabled list; designated infielder Josh Wilson for assignment. |
| July 12, 2009 | Optioned pitcher Brandon Morrow to Tacoma of the Pacific Coast League (AAA). |
| July 10, 2009 | Purchased the contract of third baseman Chris Shelton from Tacoma of the Pacific Coast League (AAA); optioned pitcher Jason Vargas to Tacoma. |
| July 8, 2009 | Activated pitcher Erik Bedard from the 15-Day disabled list; placed designated hitter Mike Sweeney on the 15-day disabled list, retroactive to Monday. |
| July 4, 2009 | Activated pitcher Shawn Kelley from the 15-day disabled list; optioned first baseman Mike Carp to Tacoma of the Pacific Coast League (AAA). |
| July 1, 2009 | Placed third baseman Adrian Beltre on the 15-day disabled list, retroactive to Monday; sent catcher Jamie Burke outright to Tacoma of the Pacific Coast League (AAA); purchased the contract of outfielder Ryan Langerhans from Tacoma. |
| June 26, 2009 | Activated catcher Kenji Johjima from the 15-day disabled list; designated catcher Jamie Burke for assignment. |
| June 26, 2009 | Placed shortstop Yuniesky Betancourt on the 15-day disabled list; activated second baseman Jose Lopez from the bereavement list. |
| June 21, 2009 | Placed outfielder Endy Chavez on the 60-day disabled list; activated shortstop Josh Wilson. |
| June 21, 2009 | Claimed shortstop Josh Wilson off waivers from the San Diego Padres; activated catcher Rob Johnson from the bereavement list. |
| June 16, 2009 | Fired general manager Bill Bavasi. |
| June 13, 2009 | Activated pitcher Roy Corcoran from the 15-day disabled list; placed catcher Rob Johnson on the bereavement list. |
| June 7, 2009 | Recalled catcher Jamie Burke from Tacoma of the Pacific Coast League (AAA); designated pitcher Denny Stark for assignment. |