| | | Monday, August 26th, 2030 | | Placed SP Anastasio Vega on the OTM Single A 14-day disabled list, retroactive to 08/19/2030. |
| Monday, August 19th, 2030 | | Placed SS Marv Dawson on the OTM Rookie League 14-day disabled list, retroactive to 08/13/2030. |
| Friday, August 16th, 2030 | | Signed MR Héctor Trevino to a minor league contract extension. |
| Monday, August 12th, 2030 | | Placed LF Bill Levick on the OTM Triple A 14-day disabled list, retroactive to 08/09/2030. |
| Monday, July 29th, 2030 | | Demoted MR Nelson Durán to Triple A Scranton. | | Placed 3B Devin Hilton on the OTM Single A 14-day disabled list, retroactive to 07/27/2030. |
| Tuesday, July 23rd, 2030 | | Designated MR Nelson Durán for assignment. |
| Monday, July 15th, 2030 | | Placed 2B Álex Valentín on the OTM Rookie League 14-day disabled list, retroactive to 07/12/2030. | | Placed CF Jerry Tucker on the OTM Rookie League 14-day disabled list, retroactive to 07/07/2030. |
| Friday, July 5th, 2030 | | Signed RF Norm Henry to a minor league contract extension. | | Signed SP Brad Edgar to a minor league contract extension. | | Signed 3B B.J. McGhie to a minor league contract extension. | | Signed 2B River Davis to a minor league contract extension. | | Signed SP Ed Benjamin to a minor league contract extension. |
| Saturday, June 15th, 2030 | | Drafted 3B Mitch Thomas in the 2030 first-year player draft (Supplemental Round 1, Pick 11, 33rd overall pick). | | Drafted 1B Gabriel Gregoreo in the 2030 first-year player draft (Supplemental Round 1, Pick 20, 42nd overall pick). | | Placed MR Don Jackson on the 60-day disabled list. | | Placed 2B Ty Merrill on the OTM Double A 14-day disabled list, retroactive to 06/13/2030. | | Placed SP Jerry Andrews on the 40-man roster. | | Purchased the contract of SP Jerry Andrews from Triple A Scranton. | | Drafted CF Jerry Tucker in the 2030 first-year player draft (Round 2, Pick 19, 71st overall pick). | | Drafted 3B Lanny Ewing in the 2030 first-year player draft (Round 3, Pick 19, 93rd overall pick). | | Drafted MR Victoriano Hernández in the 2030 first-year player draft (Round 4, Pick 19, 115th overall pick). | | Drafted RF Dominic Houle in the 2030 first-year player draft (Round 5, Pick 19, 137th overall pick). | | Drafted 1B Thomas Tremblay in the 2030 first-year player draft (Round 6, Pick 19, 159th overall pick). | | Drafted MR Stu Gillis in the 2030 first-year player draft (Round 7, Pick 19, 181st overall pick). | | Drafted 2B Álex Valentín in the 2030 first-year player draft (Round 8, Pick 19, 203rd overall pick). | | Drafted SS Deron Martínez in the 2030 first-year player draft (Round 9, Pick 19, 225th overall pick). | | Drafted RF Don Brown in the 2030 first-year player draft (Round 10, Pick 19, 247th overall pick). | | Drafted SP Juan Jose Ramírez in the 2030 first-year player draft (Round 11, Pick 19, 269th overall pick). | | Drafted C Don Rice in the 2030 first-year player draft (Round 12, Pick 19, 291st overall pick). | | Drafted MR Bill Jameson in the 2030 first-year player draft (Round 13, Pick 19, 313rd overall pick). | | Drafted 2B Rubén Velásquez in the 2030 first-year player draft (Round 14, Pick 19, 335th overall pick). | | Drafted SP Pete Clark in the 2030 first-year player draft (Round 15, Pick 19, 357th overall pick). | | Drafted LF Pancho Esquivel in the 2030 first-year player draft (Round 16, Pick 19, 379th overall pick). | | Drafted MR Curt Williams in the 2030 first-year player draft (Round 17, Pick 19, 401st overall pick). | | Drafted SP Devlyn Burhoe in the 2030 first-year player draft (Round 18, Pick 19, 423rd overall pick). | | Drafted MR Geoff Anderson in the 2030 first-year player draft (Round 19, Pick 19, 445th overall pick). |
| Monday, June 3rd, 2030 | | Placed 3B Devin Hilton on the OTM Short Season A 14-day disabled list, retroactive to 05/29/2030. |
| Monday, May 27th, 2030 | | Placed RF Diego Ortíz on the OTM Short Season A 14-day disabled list, retroactive to 05/20/2030. | | Placed SP Manny Marrero on the OTM Double A 14-day disabled list, retroactive to 05/23/2030. | | CF Félix Gagnon was designated for assignment and placed on waivers. |
| Friday, May 24th, 2030 | | Signed MR Pat Seymour to a minor league contract extension. |
| Monday, May 21st, 2029 | | Demoted LF Al MacRob to Triple A Scranton. | | Placed LF Carlos Val on the active roster. | | Activated LF Carlos Val from the disabled list. | | Placed 1B Chet Brooks on the OTM Triple A 14-day disabled list, retroactive to 05/14/2029. |
| Monday, April 30th, 2029 | | Placed LF Carlos Val on the 14-day disabled list, retroactive to 04/17/2029. | | Purchased the contract of LF Al MacRob from Triple A Scranton. |
| Sunday, March 11th, 2029 | | Signed free agent SP Glen Gray to a minor league contract. |
| Wednesday, February 7th, 2029 | | Signed free agent 2B Jimmy Visser to a 3-year contract worth a total of $45,600,000. |
| Thursday, February 1st, 2029 | | Signed free agent RF Art Holmes to a 2-year contract worth a total of $3,600,000. |
| Sunday, December 24th, 2028 | | Placed SP Don Jackson on the 40-man roster. | | Placed SP Don Jackson on the active roster. | | Activated SP Don Jackson from the 60-day disabled list. |
| Friday, November 24th, 2028 | | LF Gene Witt received a 1-year contract through automatic renewal worth a total of $380,000. | | SP Don Jackson received a 1-year contract through automatic renewal worth a total of $380,000. | | 1B Vic Newman received a 1-year contract through automatic renewal worth a total of $380,000. | | CF Don Rodgers becomes a free-agent. | | SP John Simonds received a 1-year contract through automatic renewal worth a total of $380,000. | | 3B Manny Martínez received a 1-year contract through automatic renewal worth a total of $380,000. | | SP Felipe Sosa received a 1-year contract through automatic renewal worth a total of $380,000. | | CF Félix Gagnon received a 1-year contract through automatic renewal worth a total of $380,000. | | MR Jerry Andrews received a 1-year contract through automatic renewal worth a total of $380,000. | | MR Vance Dares received a 1-year contract through automatic renewal worth a total of $380,000. | | C Jody Paul received a 1-year contract through automatic renewal worth a total of $380,000. | | MR Alonso Alonzo received a 1-year contract through automatic renewal worth a total of $380,000. | | 3B Jonathon Williams received a 1-year contract through automatic renewal worth a total of $380,000. | | MR Rex Jones becomes a free-agent. | | RF Al MacRob received a 1-year contract through automatic renewal worth a total of $380,000. | | 2B Pat Lee received a 1-year contract through automatic renewal worth a total of $380,000. | | C Elliot Gault becomes a free-agent. |
| Tuesday, November 21st, 2028 | | SP Zane Rhodes received a 1-year contract through arbitration worth a total of $570,000. | | 1B Dan Kavanagh received a 1-year contract through arbitration worth a total of $1,900,000. | | SP Buddy Bayles received a 1-year contract through arbitration worth a total of $570,000. | | RF Devin Payne received a 1-year contract through arbitration worth a total of $770,000. | | CL Michel Brisson received a 1-year contract through arbitration worth a total of $4,250,000. | | MR Carlos Rodríguez received a 1-year contract through arbitration worth a total of $4,250,000. |
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