| | | Friday, June 21st, 2030 | | Signed CF Thad Hall to a 2-year contract extension worth a total of $1,660,000. |
| Wednesday, June 19th, 2030 | | Signed free agent SP Iván Germán to a minor league contract. |
| Saturday, June 15th, 2030 | | Drafted 3B Al Matthias in the 2030 first-year player draft (Round 1, Pick 17, 17th overall pick). | | Drafted SP Tony Lorenzo in the 2030 first-year player draft (Supplemental Round 1, Pick 10, 32nd overall pick). | | Drafted CF Jaime Martínez in the 2030 first-year player draft (Supplemental Round 1, Pick 19, 41st overall pick). | | Drafted 1B Clarence Dyment in the 2030 first-year player draft (Supplemental Round 1, Pick 25, 47th overall pick). | | Drafted SS Tony Reyes in the 2030 first-year player draft (Round 2, Pick 3, 55th overall pick). | | Drafted CF Scotty Walters in the 2030 first-year player draft (Round 2, Pick 17, 69th overall pick). | | Drafted SP Edgar Báez in the 2030 first-year player draft (Round 3, Pick 17, 91st overall pick). | | Drafted SP Adrián Ramírez in the 2030 first-year player draft (Round 4, Pick 17, 113rd overall pick). | | Drafted 2B Dusty Connolly in the 2030 first-year player draft (Round 5, Pick 17, 135th overall pick). | | Drafted SP Raúl Hernández in the 2030 first-year player draft (Round 6, Pick 17, 157th overall pick). | | Drafted 1B Tynan Pepper in the 2030 first-year player draft (Round 7, Pick 17, 179th overall pick). | | Drafted SS Leonardo López in the 2030 first-year player draft (Round 8, Pick 17, 201st overall pick). | | Drafted SS Freddie Clark in the 2030 first-year player draft (Round 9, Pick 17, 223rd overall pick). | | Drafted SP Carlos Mendoza in the 2030 first-year player draft (Round 10, Pick 17, 245th overall pick). | | Drafted RF Ánibal Méndez in the 2030 first-year player draft (Round 11, Pick 17, 267th overall pick). | | Drafted MR Curt Duncan in the 2030 first-year player draft (Round 12, Pick 17, 289th overall pick). | | Drafted 2B Pete Owen in the 2030 first-year player draft (Round 13, Pick 17, 311st overall pick). | | Drafted SS Stu Sharp in the 2030 first-year player draft (Round 14, Pick 17, 333rd overall pick). | | Drafted RF Héctor Martínez in the 2030 first-year player draft (Round 15, Pick 17, 355th overall pick). | | Drafted LF Tad Morris in the 2030 first-year player draft (Round 16, Pick 17, 377th overall pick). | | Drafted 1B Paul Brisson in the 2030 first-year player draft (Round 17, Pick 17, 399th overall pick). | | Drafted SP Scotty Anderson in the 2030 first-year player draft (Round 18, Pick 17, 421st overall pick). | | Drafted MR Colm Elliott in the 2030 first-year player draft (Round 19, Pick 17, 443rd overall pick). |
| Tuesday, May 21st, 2030 | | Signed free agent SP Dane Buchanan to a 1-year contract worth a total of $840,000. |
| Monday, May 28th, 2029 | | Placed 3B Aurelius Medina on the 14-day disabled list, retroactive to 05/25/2029. | | Placed 2B Rafael Morán on the active roster. | | Activated 2B Rafael Morán from the disabled list. |
| Friday, November 24th, 2028 | | LF Donnie Murdoch received a 1-year contract through automatic renewal worth a total of $380,000. | | CF Manny Costello received a 1-year contract through automatic renewal worth a total of $570,000. | | SS David Nadeau received a 1-year contract through automatic renewal worth a total of $380,000. | | SP Don Harris becomes a free-agent. | | SP Martin Goodyear received a 1-year contract through automatic renewal worth a total of $380,000. | | C Cale Porter received a 1-year contract through automatic renewal worth a total of $2,150,000. | | MR Waylon Gordon becomes a free-agent. | | 2B Rafael Morán received a 1-year contract through automatic renewal worth a total of $380,000. | | SP Don Sinden becomes a free-agent. | | CL Pat Norman becomes a free-agent. | | MR Iván Ortíz becomes a free-agent. | | CF Pat Brown becomes a free-agent. | | 1B Robby Jenkins becomes a free-agent. | | LF Zach Tucker becomes a free-agent. | | SP Wes Shaw becomes a free-agent. | | SP Héctor Sánchez becomes a free-agent. | | MR Pat Walker becomes a free-agent. |
| Wednesday, November 8th, 2028 | | Signed MR Curt Bates to a 2-year contract extension worth a total of $1,168,000. | | Signed C Pablo Martínez to a 1-year contract extension worth a total of $4,990,000. |
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