- Apr 8, 2021 - The Oklahoma City Thunder placed the contract of Darius Miller on waivers.
- Apr 7, 2021 - Justin Jackson, previously with the Oklahoma City Thunder, became a free agent.
- Apr 5, 2021 - The Oklahoma City Thunder placed the contract of Justin Jackson on waivers.
- Apr 5, 2021 - Justin Robinson signed a contract with the Oklahoma City Thunder.
- Apr 5, 2021 - Jaylen Hoard signed a two-way contract with the Oklahoma City Thunder.