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Equity and Capital (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2022
Class of Stock |
Ownership Interest In The Operating Partnership | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2022 | ​ | December 31, 2021
​ | ​ | Number of | ​ | Percentage of | ​ | Number of | ​ | Percentage of
​ |  | units |  | total | ​ | units |  | total
Digital Realty Trust, Inc. | ​ | 284,666 | ​ | 97.8 | % | ​ | 284,415 | ​ | 98.0 | %
Noncontrolling interests consist of: |  | ​ |  |  |  | ​ | ​ |  |  | ​
Common units held by third parties |  | 4,387 |  | 1.5 | % | ​ | 4,389 |  | 1.5 | %
Incentive units held by employees and directors (see Note 12. "Incentive Plan") |  | 1,904 |  | 0.7 | % | ​ | 1,543 |  | 0.5 | %
​ |  | 290,957 |  | 100.0 | % | ​ | 290,347 |  | 100.0 | %
Summary of Activity for Noncontrolling Interests in the Operating Partnership | The following table shows activity for the noncontrolling interests in the Operating Partnership for the three months ended March 31, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Common Units |  | Incentive Units |  | Total
As of December 31, 2021 |  | 4,389 |  | 1,542 |  | 5,931
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1) |  | (2) |  | — |  | (2)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1) |  | — |  | (12) |  | (12)
Incentive units issued upon achievement of market performance condition |  | — |  | 221 |  | 221
Grant of incentive units to employees and directors |  | — |  | 153 |  | 153
As of March 31, 2022 |  | 4,387 |  | 1,904 |  | 6,291
(1) | These redemptions and conversions were recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid-in capital based on the book value per unit in the accompanying consolidated balance sheet of Digital Realty Trust, Inc.
Schedule of Dividends and Distributions | We have declared and paid the following dividends on our common and preferred stock for the three months ended March 31, 2022 (in thousands, except per share data): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Series J | ​ | Series K | ​ | Series L | ​ | ​ | ​ | ​
​ | ​ | ​ | Preferred | ​ | Preferred | ​ | Preferred | ​ | ​ | Common
Date dividend declared |  | Dividend payment date | Stock |  | Stock |  | Stock | ​ | ​ | Stock
March 3, 2022 | ​ | March 31, 2022 | $ | 2,625 | ​ | $ | 3,071 | ​ | $ | 4,485 | ​ | ​ | $ | 348,025
Annual rate of dividend per share | ​ | ​ | $ | 1.31250 | ​ | $ | 1.46250 | ​ | $ | 1.30000 | ​ | ​ | $ | 4.88000
Digital Realty Trust, L.P. |
Class of Stock |
Schedule of Dividends and Distributions | All distributions on the Operating Partnership’s units are at the discretion of Digital Realty Trust, Inc.’s Board of Directors. The table below shows the distributions declared and paid by the Operating Partnership on its common and preferred units for the three months ended March 31, 2022 (in thousands, except for per unit data):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Series J | ​ | Series K | ​ | Series L | ​ | ​ | ​ | ​
​ | ​ | ​ | Preferred | ​ | Preferred | ​ | Preferred | ​ | ​ | Common
Date distribution declared |  | Distribution payment date | Units |  | Units | ​ | Units | ​ | ​ | Units
March 3, 2022 | ​ | March 31, 2022 | $ | 2,625 | ​ | $ | 3,071 | ​ | $ | 4,485 | ​ | ​ | $ | 355,812
Annual rate of distribution per unit | ​ | ​ | $ | 1.31250 | ​ | $ | 1.46250 | ​ | $ | 1.30000 | ​ | ​ | $ | 4.88000

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