| | | Wednesday, September 14th, 1977 | | Placed 2B Suk-min Yi on waivers. |
| Saturday, September 10th, 1977 | | Activated SP Bor-zeng Chen from the disabled list. |
| Saturday, September 3rd, 1977 | | Placed MR Tommy Williams on the 9-day disabled list. |
| Friday, August 19th, 1977 | | Activated SP Tyler Underdown from the disabled list. | | MR Tracy Powell was designated for assignment and placed on waivers (from active). |
| Sunday, August 14th, 1977 | | Failed to sign 6th round draft pick Danny Owens. |
| Sunday, August 7th, 1977 | | Signed Zander Sterling to a minor league contract with a signing bonus of $94,000. | | Signed Mark Burton to a minor league contract with a signing bonus of $28,800. |
| Wednesday, July 27th, 1977 | | Signed Alfredo Márquez to a minor league contract with a signing bonus of $40,000. |
| Tuesday, July 19th, 1977 | | Signed Fraser Calleson to a minor league contract with a signing bonus of $345,900. |
| Sunday, July 3rd, 1977 | | Assigned 1B Mo Tsou to Triple A Keswick. | | Signed Carlos Márquez to a minor league contract with a signing bonus of $22,300. |
| Wednesday, March 30th, 1977 | | Placed MR Jesús Pérez on the 9-day disabled list. | | Purchased the contract of CL Takeo Murata from Triple A Keswick. | | MR Edgardo Concepción was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Saturday, March 19th, 1977 | | Activated LF Chia-ch'ing Mo from the 60-day disabled list. | | MR Jeff Thomas was designated for assignment, placed on waivers and taken off the 40-man roster. |
| Friday, October 22nd, 1976 | | Signed general manager Vincent Sawyer to a 5-year, $58,200 per year contract. |
| Thursday, October 21st, 1976 | | Signed manager Ángel Pinto to a 4-year, $86,100 per year contract. |
| Tuesday, October 19th, 1976 | | Signed pitching coach Manuel Reyes to a 4-year, $33,400 per year contract. |
| Tuesday, October 12th, 1976 | | Signed hitting coach Steve Lynn to a 4-year, $71,500 per year contract. |
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