Piedmont Realty Trust, Inc.

SCHEDULE 14A

(RULE 14A-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a)

of the Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

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Preliminary Proxy Statement

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Definitive Proxy Statement

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Definitive Additional Materials

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Soliciting Material under § 240.14a-12

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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PIEDMONT REALTY TRUST, INC.

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(Name of Registrant as Specified in its Charter)

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(Name of Person(s) Filing Proxy Statement, if other than Registrant)

Payment of Filing Fee (Check the appropriate box)

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No fee required.

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Fee paid previously with preliminary materials.

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Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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Notice of Annual Meeting of

Stockholders and Proxy Statement

Dear Stockholder:

On Tuesday, May 12, 2026, Piedmont Realty Trust, Inc., a Maryland corporation, will hold its 2026 Annual Meeting of Stockholders (the “Annual Meeting”) virtually via live webcast. The meeting will begin at 11:00 a.m., Eastern time. If you were a registered stockholder of the Company as of the record date you will be able to attend the Annual Meeting, ask a question, and vote online by visitingwww.meetnow.global/MYT5Y6Gand following the instructions on your Notice of Internet Availability of Proxy Materials or proxy card. If you are a beneficial holder and hold your shares through an intermediary, such as a bank or broker, and want to attend the webcast with the ability to vote, you must register in advance of the Annual Meeting by submitting proof of your proxy power from your broker or bank to Computershare by no later than 5:00 p.m., Eastern time, on May 7, 2026.

The purpose of this Annual Meeting is to:

I. Elect nine directors identified in the 2026 proxy statement to hold office for terms expiring at our 2027 annual meeting and until their successors are duly elected and qualified;

II. Ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for fiscal 2026;

III. Approve, on an Advisory Basis, the compensation of our named executive officers;

IV. Approve our Third Amended and Restated Omnibus Incentive Plan; and

V. Transact any other business as may properly come before the meeting, or any postponement or adjournment thereof.

The board of directors has selected March 4, 2026 as the record date for determining stockholders entitled to vote at the meeting.

On April 1, 2026, we will begin mailing a Notice of Internet Availability of Proxy Materials containing instructions on how to access our proxy materials, including our 2026 proxy statement and our Annual Report to Stockholders for fiscal 2025, and how to vote online.

Whether or not you plan to attend the Annual Meeting remotely, your vote is very important, and we encourage you to vote promptly. You may vote via toll-free telephone number or over the Internet. If you received a paper copy of the proxy card by mail, you may sign, date, and mail the proxy card in the envelope provided.

Instructions regarding all three methods offered for voting are contained in the proxy card or Notice of Internet Availability of Proxy Materials. If you execute a proxy but later decide, for any reason, to revoke your proxy, you may do so at any time before 11:59 p.m., Eastern time, on May 11, 2026. You may also revoke your proxy by voting online prior to the poll closing at the Annual Meeting.

BY ORDER OF THE BOARD OF DIRECTORS /s/ Sherry L. Rexroad

Sherry L. Rexroad Corporate Secretary March 18, 2026 5565 Glenridge Connector | Suite 450 Atlanta, GA 30342

Important Notice Regarding the Availability of Proxy Materials for the Stockholders Meeting to be Held on May 12, 2026:

Our 2026 Proxy Statement and our Annual Report to Stockholders for Fiscal 2025 are available atwww.envisionreports.com/PDM

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