DIGITAL REALTY TRUST, INC.

Securities Trading Plans of Directors and Executive Officers

On May 5, 2025, Andrew P. Power, Digital Realty Trust, Inc.'s President and Chief Executive Officer, entered into a “Rule 10b5-1 trading arrangement” (as defined in Item 408(a) of Regulation S-K) that provides for the sale of 58,000 shares of Digital Realty Trust, Inc. common stock. The plan will start on August 4, 2025 and expire February 27, 2026, subject to early termination for certain specified events as set forth in the plan.

Federal Income Tax Considerations

As a result of recent changes in applicable tax law, the discussion under the heading “United States Federal Income Tax Considerations” in Exhibit 99.1 hereto (incorporated herein by reference), supersedes and replaces in its entirety the discussion under the heading “United States Federal Income Tax Considerations” in the prospectus dated March 16, 2023, which is a part of Digital Realty Trust, Inc.’s and Digital Realty Trust, L.P.’s Registration Statement on Form S-3 (File Nos. 333-270596 and 333-270596-01) filed with the SEC on March 16, 2023.

As a result of recent changes in applicable tax law, the discussion under the heading “United States Federal Income Tax Considerations” in Exhibit 99.2 hereto (incorporated herein by reference), supersedes and replaces in its entirety the discussion under the heading “United States Federal Income Tax Considerations” in the prospectus dated April 7, 2025, which is a part of Digital Realty Trust, Inc.’s Registration Statement on Form S-3 (File No. 333-286425) filed with the SEC on April 7, 2025, the prospectus dated October 10, 2017, which is a part of Digital Realty Trust, Inc.’s Registration Statement on Form S-3 (File No. 333-220887) filed with the SEC on October 10, 2017 and the prospectus dated November 14, 2005, which is a part of Digital Realty Trust, Inc.’s Registration Statement on Form S-3 (File No. 333-129688) filed with the SEC on November 14, 2005.