| | C | Signed/Offer Sheet (The Oklahoma City Thunder signed F-C Mike Muscala to a rest-of-the-season contract.) |
| | PF | Waived (The Oklahoma City Thunder waived F Aleksej Pokusevski.) |
| | SG | Signed/Offer Sheet (The Oklahoma City Thunder signed G Adam Flagler to a two-way contract.) |
| | C | Signed/Offer Sheet (The Oklahoma City Thunder signed C Bismack Biyombo.) |
| | SG | Signed/Offer Sheet (The Oklahoma City Thunder signed F Lindy Waters III to a standard contract.) |
| | PG | Traded (The Oklahoma City Thunder traded G Vasilije Micic to the Charlotte Hornets.) To |
| | SF | Traded (The Charlotte Hornets traded F Gordon Hayward to the Oklahoma City Thunder.) From |
| | PG | Traded (The Oklahoma City Thunder traded G Tre Mann to the Charlotte Hornets.) To |
| | PF | Traded (The Oklahoma City Thunder traded F Davis Bertans to the Charlotte Hornets.) To |
| | SG | Other Transaction (The Oklahoma City Thunder converted F Lindy Waters III to a two-way contract. ) |
| | SF | Waived (The Oklahoma City Thunder waived F Jack White.) |
| | SG | Waived (The Oklahoma City Thunder waived G Adam Flagler.) |
| | SG | Waived (The Oklahoma City Thunder waived G Caleb McConnell.) |
| | SG | Signed/Offer Sheet (The Oklahoma City Thunder signed G Adam Flagler.) |
| | PF | Waived (The Oklahoma City Thunder waived F KJ Williams.) |
| | SG | Waived (The Oklahoma City Thunder waived G Hunter Maldonado.) |
| | SG | Signed/Offer Sheet (The Oklahoma City Thunder signed G Caleb McConnell.) |
| | PF | Signed/Offer Sheet (The Oklahoma City Thunder signed F KJ Williams.) |
| | SG | Signed/Offer Sheet (The Oklahoma City Thunder signed G Hunter Maldonado.) |
| | SG | Waived (The Oklahoma City Thunder waived G-F Kevin Porter Jr.) |
| | SG | Traded (The Houston Rockets traded G-F Kevin Porter Jr. to the Oklahoma City Thunder.) |
| | PF | Traded (The Oklahoma City Thunder traded F Jeremiah Robinson-Earl to the Houston Rockets.) To |
| | SG | Traded (The Oklahoma City Thunder traded G Victor Oladipo to the Houston Rockets.) To |
| | C | Signed/Offer Sheet (The Oklahoma City Thunder signed C Olivier Sarr to a two-way contract. ) |
| | PF | Waived (The Oklahoma City Thunder waived F Usman Garuba.) |
| | PG | Waived (The Oklahoma City Thunder waived G TyTy Washington.) |
| | SF | Waived (The Oklahoma City Thunder waived F-G Rudy Gay.) |
| | SF | Traded (The Atlanta Hawks traded F-G Rudy Gay to the Oklahoma City Thunder. ) From |
| | PG | Traded (The Atlanta Hawks traded G TyTy Washington Jr. to the Oklahoma City Thunder. ) From |
| | PF | Traded (The Atlanta Hawks traded F Usman Garuba to the Oklahoma City Thunder. ) From |
| | PG | Traded (The Oklahoma City Thunder traded G Patty Mills to the Atlanta Hawks. ) To |
| | PG | Traded (The Houston Rockets traded G Patty Mills to the Oklahoma City Thunder.) From |
| | SF | Signed/Offer Sheet (The Oklahoma City Thunder signed F Jack White. ) |
| | PG | Signed/Offer Sheet (The Oklahoma City Thunder signed G Vasilije Micic.) |
| | SG | Traded (The Miami Heat traded G Victor Oladipo to the Oklahoma City Thunder.) From |
| | C | Declared Free Agency (C Olivier Sarr declared free agency.) |
| | SG | Declared Free Agency (G Jared Butler declared free agency.) |
| | PF | Declared Free Agency (F-C Dario Saric declared free agency.) |
| | PF | Traded (The Dallas Mavericks traded F Davis Bertans to the Oklahoma City Thunder.) From |