| Unvested LTIP Units |
The below table details unvested OP LTIP Units as of March 31, 2020: | | | | | | | | | Grant Recipient | | Number of OP LTIP Units Granted | | Grant Date | | Vesting Date(1) | Directors: | | | | | | | | | 14,552 |
| | September 11, 2019 | | September 10, 2020 | Dedicated or partially dedicated personnel: | | | | | | | | | 12,818 |
| | December 13, 2019 | | December 13, 2020 | | | 10,067 |
| | December 13, 2019 | | December 13, 2021 | | | 8,691 |
| | December 11, 2018 | | December 11, 2020 | | | 4,977 |
| | March 4, 2020 | | December 31, 2020 | | | 9,834 |
| | March 4, 2020 | | December 31, 2021 | Total unvested OP LTIP Units at March 31, 2020 | | 60,939 |
| | | | |
(1) Date at which such OP LTIP Units will vest and become non-forfeitable. |
| Roll-Forward of Company's LTIP Units Outstanding |
The following table summarizes issuance and exercise activity of OP LTIP Units for the three-month periods ended March 31, 2020 and 2019: | | | | | | | | | | | | | | | | | | | | | | Three-Month Period Ended | | | March 31, 2020 | | March 31, 2019 | | | Manager | | Director/ Employee | | Total | | Manager | | Director/ Employee | | Total | OP LTIP Units Outstanding (December 31, 2019 and January 1, 2019, respectively) | | 365,518 |
| | 180,198 |
| | 545,716 |
| | 375,000 |
| | 146,371 |
| | 521,371 |
| Granted | | — |
| | 14,811 |
| | 14,811 |
| | — |
| | — |
| | — |
| Exercised | | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| OP LTIP Units Outstanding (March 31, 2020 and 2019, respectively) | | 365,518 |
| | 195,009 |
| | 560,527 |
| | 375,000 |
| | 146,371 |
| | 521,371 |
| OP LTIP Units Unvested and Outstanding (March 31, 2020 and 2019, respectively) | | — |
| | 60,939 |
| | 60,939 |
| | — |
| | 37,709 |
| | 37,709 |
| OP LTIP Units Vested and Outstanding (March 31, 2020 and 2019, respectively) | | 365,518 |
| | 134,070 |
| | 499,588 |
| | 375,000 |
| | 108,662 |
| | 483,662 |
|
|