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| Date | Type | Move |
|---|---|---|
| 2026-09-13 | Outright | Athletics sent RHP Taylor Rashi outright to Las Vegas Aviators. |
| 2026-09-11 | DFA | Athletics designated RHP Taylor Rashi for assignment. |
| 2026-09-11 | Waiver claim | Athletics claimed RHP Hunter Bigge off waivers from Tampa Bay Rays. |
| 2026-09-02 | DFA | Athletics designated LHP José Suarez for assignment. |
| 2026-08-25 | Waiver claim | Athletics claimed RHP Chris Roycroft off waivers from Tampa Bay Rays. |
| 2026-08-21 | Waiver claim | Athletics claimed RF Johnathan Rodríguez off waivers from Pittsburgh Pirates. |
| 2026-08-16 | Waiver claim | Athletics claimed LHP Joe Rock off waivers from Chicago White Sox. |
| 2026-08-12 | Outright | Athletics sent SS Jonathan Ornelas outright to Las Vegas Aviators. |
| 2026-08-11 | Waiver claim | Athletics claimed LHP Drew Rom off waivers from Milwaukee Brewers. |
| 2026-08-10 | DFA | Athletics designated SS Jonathan Ornelas for assignment. |
| 2026-08-09 | Waiver claim | Athletics claimed RHP Taylor Rashi off waivers from Minnesota Twins. |
| 2026-08-06 | Outright | Athletics sent LHP Ben Bowden outright to Las Vegas Aviators. |
| 2026-08-04 | DFA | Athletics designated LHP Ben Bowden for assignment. |
| 2026-08-04 | Outright | Athletics sent RHP Chen Zhong-Ao Zhuang outright to Las Vegas Aviators. |
| 2026-08-04 | Waiver claim | Kansas City Royals claimed LHP Connor Thomas off waivers from Athletics. |
| 2026-08-04 | Outright | Athletics sent RHP Chen Zhong-Ao Zhuang outright to Las Vegas Aviators. |
| 2026-08-01 | DFA | Athletics designated LHP Connor Thomas for assignment. |
| 2026-07-31 | DFA | Athletics designated RHP Chen Zhong-Ao Zhuang for assignment. |
| 2026-07-30 | Waiver claim | Athletics claimed LHP Connor Thomas off waivers from Atlanta Braves. |
| 2026-07-29 | Outright | Athletics sent RHP Geoff Hartlieb outright to Las Vegas Aviators. |
| 2026-07-27 | DFA | Athletics designated RHP Geoff Hartlieb for assignment. |
| 2026-07-20 | Outright | Athletics sent 1B Joey Meneses outright to Las Vegas Aviators. |
| 2026-07-17 | DFA | Athletics designated 1B Joey Meneses for assignment. |
| 2026-07-15 | DFA | Athletics designated RHP Aaron Civale for assignment. |
| 2026-07-12 | Waiver claim | Athletics claimed 3B Donovan Walton off waivers from Los Angeles Angels. |
| 2026-07-04 | Outright | Athletics sent RHP Geoff Hartlieb outright to Las Vegas Aviators. |
| 2026-07-04 | Waiver claim | Washington Nationals claimed LHP Matt Krook off waivers from Athletics. |
| 2026-07-03 | DFA | Athletics designated RHP Geoff Hartlieb for assignment. |
| 2026-07-02 | DFA | Athletics designated LHP Matt Krook for assignment. |
| 2026-06-29 | DFA | Athletics designated RHP Michael Kelly for assignment. |
| 2026-06-27 | DFA | Athletics designated 3B Brett Harris for assignment. |
| 2026-06-21 | DFA | Athletics designated RHP Scott Barlow for assignment. |
| 2026-06-05 | DFA | Athletics designated RHP Joel Kuhnel for assignment. |
| 2026-05-18 | Outright | Athletics sent 2B Michael Stefanic outright to Las Vegas Aviators. |
| 2026-05-16 | DFA | Athletics designated 2B Michael Stefanic for assignment. |
| 2026-05-14 | DFA | Athletics designated CF Junior Perez for assignment. |
| 2026-05-12 | DFA | Athletics designated RHP Eduarniel Núñez for assignment. |
| 2026-05-07 | DFA | Athletics designated C Austin Wynns for assignment. |
| 2026-04-30 | Waiver claim | New York Mets claimed 2B Andy Ibáñez off waivers from Athletics. |
| 2026-04-26 | DFA | Athletics designated 3B Andy Ibáñez for assignment. |
| 2026-02-15 | Waiver claim | Arizona Diamondbacks claimed RHP Grant Holman off waivers from Athletics. |
| 2026-02-10 | DFA | Athletics designated RHP Mitch Spence for assignment. |
| 2026-02-10 | DFA | Athletics designated RHP Grant Holman for assignment. |
| 2026-02-06 | DFA | Athletics designated 3B Max Schuemann for assignment. |
| 2026-02-06 | Waiver claim | Athletics claimed 3B Andy Ibáñez off waivers from Los Angeles Dodgers. |
| 2026-01-08 | Waiver claim | Atlanta Braves claimed LHP Ken Waldichuk off waivers from Athletics. |
Waiver rows: the official MLB StatsAPI transaction feed's waiver-claim, designated-for-assignment and outright-assignment entries involving the club on either side, 2026 season to date. Free-agency elections that follow a DFA are a different feed type and stay on the transaction log. Every trade, signing and release involving the Athletics is also staged: see the 2026 Athletics transaction log or the full 1945-2026 transaction archive.