Columbia Equity Trust, Inc.

Quarterly Report for period ending 2006-09-30

Quarterly Report for period ending 2006-06-30

Quarterly Report for period ending 2006-03-31

Annual Report for period ending 2005-12-31

Quarterly Report for period ending 2005-09-30

Quarterly Report for period ending 2005-06-30

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities

Notification filed by issuer to voluntarily withdraw a class of securities from listing and registration on a national securities exchange

Notice of termination of registration of a class of securities under Section 12(b)

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

None

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

Form for the registration / listing of a class of securities on a national securities exchange pursuant to Section 12(b)

DAVIS SELECTED ADVISERS: Major Shareholders

GAMCO INVESTORS, INC. ET AL: Major Shareholders

Carr Oliver T III: Statement of changes in beneficial ownership of securities

Clifford Christian H: Statement of changes in beneficial ownership of securities

Fisch Clinton D: Statement of changes in beneficial ownership of securities

JOHNSON BRUCE M: Statement of changes in beneficial ownership of securities

MCGOVERN ROBERT J: Statement of changes in beneficial ownership of securities

Novack John M: Statement of changes in beneficial ownership of securities

Owen Rebecca L: Statement of changes in beneficial ownership of securities

Schissel John A: Statement of changes in beneficial ownership of securities

Prospectus filed pursuant to Rule 424(b)(4)

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

A new registration statement filed under Rule 462(b) to add securities to a prior related effective registration statement filed on Form S-11

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Registration statement for securities to be issued by real estate companies

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive proxy statement relating to a merger, acquisition, or disposition

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.