Company: PSA-PH
Filing Date: 2025-03-28
Form Type: DEFA14A
Source: 0000950170-25-046759
Chunk: 0

Company: Public Storage
Filing Date: 2025-03-28
Form: DEFA14A
Chunk 0
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<div align='center'>United States

Securities and Exchange Commission

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934</div>

| ☒ Filed by the Registrant |     | ☐ Filed by a Party other than the Registrant |

| Check the appropriate box: |     |                                                                                 |
| ☐                          |     | Preliminary Proxy Statement                                                     |
| ☐                          |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐                          |     | Definitive Proxy Statement                                                      |
| ☒                          |     | Definitive Additional Materials                                                 |
| ☐                          |     | Soliciting Material under § 240.14a-12                                          |

### PUBLIC STORAGE
<div align='center'>(Name of Registrant as Specified in Its Charter)</div>

| Payment of Filing Fee (Check all boxes that apply): |     |                                                                                                      |
| ☒                                                   |     | No fee required.                                                                                     |
| ☐                                                   |     | Fee paid previously with preliminary materials.                                                      |
| ☐                                                   |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |