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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * CUSHING DANIEL K   2. Issuer Name and Ticker or Trading Symbol PRENTISS PROPERTIES TRUST/MD [PP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President (Last) (First) (Middle) 3890 WEST NORTHWEST HIGHWAY, SUITE 400 3. Date of Earliest Transaction (Month/Day/Year) 07/27/2005 (Street) DALLAS,, TX 752205166 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 Shares 07/27/2005   M   4,438 A $ 28.1 4,438 D   Common Shares 07/27/2005   M   5,000 A $ 26.09 9,438 D   Common Shares 07/27/2005   F   3,000 D $ 40.8 6,438 D (1)   Common Shares 07/27/2005   F   3,300 D $ 40.8 3,138 D (1)   Common Shares               500 I By Trust (2) Common Shares of Beneficial Interest(CommonShares)               31,194 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Options

$ 28.1

07/27/2005

M

4,438

02/28/2003

02/28/2012

Common Shares

4,438

$ 0

4,096

D (3)

Options

$ 26.09

07/27/2005

M

5,000

03/05/2004

03/05/2013

Common Shares

5,000

$ 0

5,000

D (4)

Options

$ 34.2

02/23/2005

02/23/2014

Common Shares

22,000

22,000

D (5)

Options

$ 34.8

02/03/2006

02/03/2015

Common Shares

30,000

30,000

D (6)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
CUSHING DANIEL K 3890 WEST NORTHWEST HIGHWAY SUITE 400 DALLAS,, TX 752205166			Senior Vice President

Signatures

/s/ Cushing, Daniel K.		07/29/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents 6,300 Common Shares withheld by the Company to satisfy the option exercise price and payroll tax withholding obligation due upon the exercise of options held by Mr. Cushing. These shares were then placed in treasury. Mr. Cushing retained the remaining balance of the Common Shares (3,138 Common Shares).
(2)	Shares held by Cushing Children's Trust UAD 3/10/99, Rebecca S. Cushing Trustee, a trust in which Dan Cushing disclaims any beneficial interest.
(3)	Options will become exercisable for one-third of the Common Shares 02/28/02, 02/28/03 and for the balance of the covered Common Shares on 02/28/04.
(4)	Options will become exercisable for one-third of the covered Common Shares on 03/05/04, 03/05/05 and for the balance of the covered Common Shares on 03/05/06.
(5)	Options will become exercisable for one-third of the covered Common Shares on 02/23/05, 02/23/06 and for the balance of the covered Common Shares on 02/23/07.
(6)	Options will become exercisable for one-third of the Common Shares 02/03/06, 02/03/07 and for the balance of the covered Common Shares on 02/03/08.

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