Sec Form 4 Filing - Peterson Scott E @ Digital Realty Trust, Inc. - 2012-03-15

Insider filing report for Changes in Beneficial Ownership
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FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person
Peterson Scott E
2. Issuer Name and Ticker or Trading Symbol
Digital Realty Trust, Inc. [ DLR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
X __ Officer (give title below) _____ Other (specify below)
Senior VP, Acquisitions
(Last) (First) (Middle)
560 MISSION STREET, SUITE 2900
3. Date of Earliest Transaction (MM/DD/YY)
03/15/2012
(Street)
SAN FRANCISCO, CA94105
4. If Amendment, Date Original Filed (MM/DD/YY)
6. Individual or Joint/Group Filing (Check Applicable Line)
__ X __ Form filed by One Reporting Person
_____ Form filed by More than One Reporting Person
(City) (State) (Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/15/2012 M( 1 ) 14,902 A 14,902 D
Common Stock 03/15/2012 S 14,902 D $ 71.22 ( 3 ) 0 D
Common Stock 03/15/2012 M( 4 ) 6,098 A 6,098 D
Common Stock 03/15/2012 S 6,098 D $ 71.22 ( 3 ) 0 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(MM/DD/YY)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Class C Profits Interest Units ( 2 ) ( 6 ) 03/15/2012 M( 1 ) 14,902 ( 2 ) ( 7 ) Common Stock 14,902 $ 0 1,570 D
Long-Term Incentive Units ( 5 ) ( 6 ) 03/15/2012 M( 4 ) 6,098 ( 5 ) ( 7 ) Common Stock 6,098 $ 0 88,077 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Peterson Scott E
560 MISSION STREET, SUITE 2900
SAN FRANCISCO, CA94105
Senior VP, Acquisitions
Signatures
/s/ Barbara Polster, attorney-in-fact 03/19/2012
Signature of Reporting Person Date
Explanation of Responses:
( 1 )The reporting person converted Class C Profits Interest Units ("Class C 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. (the "Issuer"), all in accordance with the requirements of the Limited Partnership Agreement of the Operating Partnership.
( 2 )Class C Units are membership interests in the Operating Partnership of which the Issuer is the general partner. Vested Class C Units that have satisfied the performance condition and achieved full parity with Common Units receive the same quarterly distributions as Common Units, and may be converted into an equal number of Common Units on a one-for-one basis at any time. Common Units will be 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. The Class C Units have achieved full parity with Common Units.
( 3 )Represents the average sale price. Exact sale prices range from $71.21 to $71.25.
( 4 )The reporting person converted long-term incentive units into Common Units of the Operating Partnership, and subsequently redeemed the Common Units for shares of the common stock of the Issuer, all in accordance with the requirements of the Limited Partnership Agreement of the Operating Partnership.
( 5 )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.
( 6 )1 for 1.
( 7 )N/A

Remarks:
This statement of changes in beneficial ownership ("Form 4") of securities of the Issuer is being filed to report a transaction(s) that is also being reported concurrently on a Form 4 for the Operating Partnership. The change(s) in beneficial ownership reported on this Form 4 for the Issuer are as a result of the same transaction(s) reported in the Form 4 for the Operating Partnership.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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