DIGITAL REALTY TRUST, INC. — Director's Dealing 2012

Sep 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Digital Realty Trust, Inc. (DLR)
CIK: 0001297996
Period of Report: 2012-09-13

Reporting Person: Peterson Scott E (Senior VP, Acquisitions)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-09-13	Common Stock	M	20000	—	Acquired	20000	Direct
2012-09-13	Common Stock	S	20000	$73.58	Disposed	0	Direct
2012-09-13	Common Stock	M	3401	$41.73	Acquired	3401	Direct
2012-09-13	Common Stock	S	3401	$73.58	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-09-13	Long-Term Incentive Units	$	M	20000	Disposed		Common Stock (20000)	Direct
2012-09-13	Employee Stock Option (right to buy)	$41.73	M	3401	Disposed	2017-05-02	Common Stock (3401)	Direct

Footnotes

F1: The reporting person converted long-term incentive units into common limited partnership units ("Common Units") of Digital Realty Trust, L.P., a Maryland limited partnership (the "Operating Partnership"), and subsequently redeemed the Common Units for shares of the common stock of Digital Realty Trust, Inc., a Maryland corporation (the "Issuer"), all in accordance with the requirements of the Limited Partnership Agreement of the Operating Partnership.

F2: Long-term incentive units are profits interest units in the Operating Partnership. Vested profits interest units may be converted into an equal number of Common Units in the Operating Partnership on a one-for-one basis at any time. Common Units are redeemable for cash based on the fair market value of an equivalent number of shares of the Issuer's common stock, or, at the election of the Issuer, for an equal number of shares of the Issuer's common stock, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions or similar events.

F3: Represents the average sale price. Exact sale prices range from $73.25 to $74.00.

F4: Represents the average sale price. Exact sale prices range from $73.25 to $73.97

F5: 1 for 1.

F6: N/A

F7: The option vested as to 20% on 05/02/2008 and thereafter vested 1-2/3% monthly. The option became fully vested on 5/2/2012.