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CORPORATE OFFICE PROPERTIES TRUST
Most Recent SEC Filings by this Registrant
Filings Catalog

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Form 4 , 2010-08-30 , 860546/0001179110-10-013276
Form 4 , 2010-08-18 , 860546/0001179110-10-012852
Form 424B7 , 2010-08-05 , 860546/0001104659-10-042314
Form 10-Q , 2010-07-30 , 860546/0001104659-10-040690
Form 8-K , 2010-07-28 , 860546/0001104659-10-040210
Form 11-K , 2010-06-24 , 860546/0001104659-10-035380
Form 8-K , 2010-06-23 , 860546/0001104659-10-035176
Form 4/A , 2010-06-14 , 860546/0001179110-10-010342
Form 4 , 2010-06-11 , 860546/0001179110-10-010323
Form SC 13G/A , 2010-06-10 , 860546/0000315066-10-002876
Form 4 , 2010-06-03 , 860546/0001179110-10-009787
Form S-8 , 2010-05-20 , 860546/0001104659-10-029860
Form 8-K , 2010-05-19 , 860546/0001104659-10-029577
Form 4 , 2010-05-13 , 860546/0001179110-10-008546
Form 4 , 2010-05-13 , 860546/0001179110-10-008547
Form 4 , 2010-05-13 , 860546/0001179110-10-008548
Form 4 , 2010-05-13 , 860546/0001179110-10-008549
Form 4 , 2010-05-13 , 860546/0001179110-10-008550
Form 4 , 2010-05-13 , 860546/0001179110-10-008551
Form 4 , 2010-05-13 , 860546/0001179110-10-008552
Form 4 , 2010-05-13 , 860546/0001179110-10-008553
Form 4 , 2010-05-13 , 860546/0001179110-10-008554
Form 4 , 2010-05-13 , 860546/0001179110-10-008555
Form 424B7 , 2010-05-07 , 860546/0001104659-10-026836
Form 8-K , 2010-05-05 , 860546/0001104659-10-025852
Form DEFA14A , 2010-05-05 , 860546/0001104659-10-025853
Form 10-Q , 2010-04-30 , 860546/0001104659-10-023701
Form 8-K , 2010-04-28 , 860546/0001104659-10-022589
Form 4 , 2010-04-26 , 860546/0001179110-10-007359
Form 4 , 2010-04-23 , 860546/0001179110-10-007267
Form 4 , 2010-04-16 , 860546/0001179110-10-007039
Form 8-K , 2010-04-16 , 860546/0001104659-10-020127
Form 424B3 , 2010-04-13 , 860546/0001104659-10-019510
Form S-3ASR , 2010-04-13 , 860546/0001104659-10-019471
Form 8-K , 2010-04-01 , 860546/0001104659-10-017910
Form 8-K , 2010-03-30 , 860546/0001104659-10-017389
Form DEF 14A , 2010-03-30 , 860546/0001047469-10-002919
Form 4 , 2010-03-29 , 860546/0001179110-10-006091
Form 4 , 2010-03-29 , 860546/0001179110-10-006092
Form 8-K , 2010-03-29 , 860546/0001104659-10-017025
Form SC 13G/A , 2010-03-26 , 860546/0000905148-10-000784
Form SC 13G/A , 2010-03-17 , 860546/0001140361-10-012486
Form 4 , 2010-03-16 , 860546/0001179110-10-005366
Form 4 , 2010-03-15 , 860546/0001179110-10-005190
Form 4 , 2010-03-15 , 860546/0001179110-10-005153
Form SC 13G , 2010-03-11 , 860546/0001140361-10-011346
Form 4 , 2010-03-11 , 860546/0001179110-10-004966
Form 4 , 2010-03-11 , 860546/0001179110-10-004962
Form 4 , 2010-03-10 , 860546/0001179110-10-004895
Form 8-K , 2010-03-10 , 860546/0001104659-10-013531
Form 4 , 2010-03-05 , 860546/0001179110-10-004591
Form 4 , 2010-03-05 , 860546/0001179110-10-004590
Form 4 , 2010-03-05 , 860546/0001179110-10-004589
Form 4 , 2010-03-05 , 860546/0001179110-10-004587
Form 4 , 2010-03-05 , 860546/0001179110-10-004588
Form 4 , 2010-03-03 , 860546/0001179110-10-004320
Form 4 , 2010-03-03 , 860546/0001179110-10-004321
Form 4 , 2010-03-03 , 860546/0001179110-10-004324
Form 4 , 2010-03-03 , 860546/0001179110-10-004363
Form 4 , 2010-03-03 , 860546/0001179110-10-004386
Form 4 , 2010-03-01 , 860546/0001179110-10-003994
Form 4 , 2010-02-26 , 860546/0001179110-10-003971
Form 4 , 2010-02-26 , 860546/0001179110-10-003948
Form 4 , 2010-02-24 , 860546/0001179110-10-003614
Form 10-K , 2010-02-19 , 860546/0001047469-10-001037
Form SC 13G/A , 2010-02-16 , 860546/0000315066-10-001580
Form SC 13G , 2010-02-16 , 860546/0000905148-10-000388
Form SC 13G , 2010-02-12 , 860546/0001140361-10-005773
Form SC 13G/A , 2010-02-12 , 860546/0001036325-10-000021
Form 8-K , 2010-02-10 , 860546/0001104659-10-006114
Form SC 13G/A , 2010-02-04 , 860546/0000932471-10-000835
Form SC 13G , 2010-01-29 , 860546/0001086364-10-007216
Form 424B7 , 2010-01-21 , 860546/0001104659-10-002433
Form SC 13G/A , 2010-01-21 , 860546/0001086521-10-000010
Form SC 13G , 2010-01-20 , 860546/0001086521-10-000007
Form SC 13G , 2010-01-19 , 860546/0001086521-10-000001
Form 8-K , 2009-12-09 , 860546/0001104659-09-069164
Form 4 , 2009-12-03 , 860546/0001179110-09-016181
Form 4 , 2009-12-01 , 860546/0001179110-09-016049
Form SC 13G , 2009-11-12 , 860546/0001086521-09-000019
Form 4 , 2009-11-10 , 860546/0001179110-09-015251
Form 10-Q , 2009-10-30 , 860546/0001104659-09-061579
Form 8-K , 2009-10-28 , 860546/0001104659-09-060925
Form 3 , 2009-09-01 , 860546/0001179110-09-012727
Form 3 , 2009-09-01 , 860546/0001179110-09-012726
Form 8-K , 2009-08-27 , 860546/0001104659-09-051904
Form 4 , 2009-08-25 , 860546/0001179110-09-012484
Form 4 , 2009-08-17 , 860546/0001179110-09-012196
Form 4 , 2009-08-12 , 860546/0001179110-09-012004
Form 4 , 2009-08-05 , 860546/0001179110-09-011615
Form 4 , 2009-08-05 , 860546/0001179110-09-011593
Form 10-Q , 2009-07-31 , 860546/0001104659-09-046251
Form 8-K , 2009-07-29 , 860546/0001104659-09-045567
Form 11-K , 2009-06-26 , 860546/0001104659-09-040449
Form 4 , 2009-06-15 , 860546/0001179110-09-009616
Form 4 , 2009-06-15 , 860546/0001179110-09-009585
Form SC 13G/A , 2009-06-10 , 860546/0000315066-09-002893
Form 4 , 2009-06-08 , 860546/0001179110-09-009255
Form 4 , 2009-06-03 , 860546/0001179110-09-009076
Form 8-K , 2009-06-02 , 860546/0001104659-09-036254
Form 4 , 2009-05-18 , 860546/0001179110-09-008090
Form 4 , 2009-05-15 , 860546/0001179110-09-007904
Form 4 , 2009-05-15 , 860546/0001179110-09-007903
Form 4 , 2009-05-15 , 860546/0001179110-09-007902
Form 4 , 2009-05-15 , 860546/0001179110-09-007901
Form 4 , 2009-05-15 , 860546/0001179110-09-007900
Form 4 , 2009-05-15 , 860546/0001179110-09-007899
Form 4 , 2009-05-15 , 860546/0001179110-09-007898
Form 4 , 2009-05-15 , 860546/0001179110-09-007897
Form 10-Q , 2009-05-08 , 860546/0001104659-09-031028
Form 8-K , 2009-04-28 , 860546/0001104659-09-026763
Form 8-K , 2009-04-28 , 860546/0001104659-09-026760
Form 8-K , 2009-04-07 , 860546/0001104659-09-022924
Form 424B3 , 2009-04-06 , 860546/0001104659-09-022740
Form 424B3 , 2009-04-06 , 860546/0001104659-09-022738
Form S-3ASR , 2009-04-03 , 860546/0001104659-09-022596
Form S-3ASR , 2009-04-03 , 860546/0001104659-09-022595
Form 8-K , 2009-04-02 , 860546/0001104659-09-022174
Form 424B5 , 2009-04-02 , 860546/0001047469-09-003691
Form S-3ASR , 2009-03-31 , 860546/0001047469-09-003520
Form DEF 14A , 2009-03-31 , 860546/0001104659-09-021699
Form 424B5 , 2009-03-31 , 860546/0001047469-09-003542
Form 8-K , 2009-03-31 , 860546/0001104659-09-021744
Form 4/A , 2009-03-13 , 860546/0001179110-09-004990
Form 4 , 2009-03-13 , 860546/0001179110-09-004992
Form 4 , 2009-03-13 , 860546/0001179110-09-004984
Form 4 , 2009-03-10 , 860546/0001179110-09-004712
Form 4 , 2009-03-10 , 860546/0001179110-09-004664
Form 4 , 2009-03-10 , 860546/0001179110-09-004660
Form 8-K , 2009-03-06 , 860546/0001104659-09-015079
Form 4 , 2009-03-06 , 860546/0001179110-09-004462
Form 4/A , 2009-03-05 , 860546/0001179110-09-004289
Form 4 , 2009-03-05 , 860546/0001179110-09-004339
Form 4 , 2009-03-05 , 860546/0001179110-09-004337
Form 4 , 2009-03-05 , 860546/0001179110-09-004259
Form 4 , 2009-03-04 , 860546/0001179110-09-004142
Form 4 , 2009-03-04 , 860546/0001179110-09-004088
Form 4 , 2009-03-04 , 860546/0001179110-09-004089
Form 4 , 2009-03-03 , 860546/0001179110-09-003943
Form 4 , 2009-03-03 , 860546/0001179110-09-003926
Form 4 , 2009-03-03 , 860546/0001179110-09-003883
Form 4 , 2009-03-02 , 860546/0001179110-09-003725
Form 4 , 2009-02-27 , 860546/0001179110-09-003674
Form 4 , 2009-02-27 , 860546/0001179110-09-003671
Form 4 , 2009-02-27 , 860546/0001179110-09-003667
Form 4 , 2009-02-27 , 860546/0001179110-09-003664
Form 10-K , 2009-02-27 , 860546/0001104659-09-013162
Form SC 13G/A , 2009-02-17 , 860546/0000315066-09-001618
Form 4 , 2009-02-17 , 860546/0001179110-09-002857
Form SC 13G/A , 2009-02-13 , 860546/0001036325-09-000040
Form SC 13G/A , 2009-02-13 , 860546/0000932471-09-000619
Form 8-K , 2009-02-12 , 860546/0001104659-09-008613
Form 8-K , 2009-02-11 , 860546/0001104659-09-008390
Form SC 13G/A , 2009-02-10 , 860546/0001068829-09-000010
Form SC 13G , 2009-02-05 , 860546/0000913414-09-003278
Form 4 , 2009-02-03 , 860546/0001179110-09-001857
Form SC 13G , 2009-01-16 , 860546/0001086521-09-000001
Form 8-K , 2009-01-05 , 860546/0001104659-09-000209
Form 3 , 2009-01-05 , 860546/0001179110-09-000107
Form 4 , 2008-12-15 , 860546/0001179110-08-020848
Form 4 , 2008-12-11 , 860546/0001179110-08-020741
Form 8-K , 2008-12-10 , 860546/0001104659-08-075794
Form 4 , 2008-12-09 , 860546/0001179110-08-020622
Form 4 , 2008-12-09 , 860546/0001179110-08-020616
Form 424B7 , 2008-11-24 , 860546/0001104659-08-072661
Form 4 , 2008-11-12 , 860546/0001179110-08-019234
Form 10-Q , 2008-11-10 , 860546/0001104659-08-069789
Form 8-K , 2008-10-30 , 860546/0001104659-08-066813
Form 8-K , 2008-10-30 , 860546/0001104659-08-066675
Form 8-K , 2008-09-29 , 860546/0001104659-08-060814
Form FWP , 2008-09-24 , 860546/0001104659-08-060105
Form 424B5 , 2008-09-24 , 860546/0001047469-08-010237
Form 424B4 , 2008-09-24 , 860546/0001047469-08-010284
Form 4 , 2008-08-12 , 860546/0001179110-08-015098
Form 10-Q , 2008-08-08 , 860546/0001104659-08-051475
Form 4 , 2008-08-04 , 860546/0001179110-08-014493
Form 8-K , 2008-07-30 , 860546/0001104659-08-048453
Form 8-K , 2008-07-29 , 860546/0001104659-08-048353
Form 11-K , 2008-06-26 , 860546/0001104659-08-042475
Form SC 13D/A , 2008-06-16 , 860546/0000950137-08-008518
Form 424B7 , 2008-06-06 , 860546/0001104659-08-038448
Form 8-K , 2008-05-28 , 860546/0001104659-08-036140
Form 4 , 2008-05-23 , 860546/0001179110-08-010492
Form 4 , 2008-05-23 , 860546/0001179110-08-010491
Form 4 , 2008-05-23 , 860546/0001179110-08-010490
Form 4 , 2008-05-23 , 860546/0001179110-08-010489
Form 4 , 2008-05-23 , 860546/0001179110-08-010488
Form 4 , 2008-05-23 , 860546/0001179110-08-010487
Form 4 , 2008-05-23 , 860546/0001179110-08-010486
Form 4 , 2008-05-23 , 860546/0001179110-08-010484
Form S-8 , 2008-05-22 , 860546/0001104659-08-035306
Form 4 , 2008-05-21 , 860546/0001179110-08-010255
Form 4 , 2008-05-16 , 860546/0001179110-08-009963
Form 4 , 2008-05-16 , 860546/0001179110-08-009962
Form 4 , 2008-05-13 , 860546/0001179110-08-009578
Form SC 13G/A , 2008-05-12 , 860546/0000315066-08-002577
Form 10-Q , 2008-05-12 , 860546/0001104659-08-032399
Form 424B7 , 2008-05-09 , 860546/0001104659-08-031723
Form 8-K , 2008-05-08 , 860546/0001104659-08-031294
Form 8-K , 2008-05-07 , 860546/0001104659-08-030583
Form 8-K , 2008-05-06 , 860546/0001104659-08-030357
Form 424B3 , 2008-04-25 , 860546/0001104659-08-026911
Form ARS , 2008-04-14 , 860546/9999999997-08-020708
Form DEF 14A , 2008-04-09 , 860546/0001047469-08-004342
Form 424B3 , 2008-04-04 , 860546/0001104659-08-022660
Form S-3ASR , 2008-04-03 , 860546/0001104659-08-022426
Form 424B7 , 2008-03-28 , 860546/0001104659-08-020499
Form PRE 14A , 2008-03-18 , 860546/0001047469-08-003033
Form 4 , 2008-03-13 , 860546/0001179110-08-005812
Form 4 , 2008-03-12 , 860546/0001179110-08-005754
Form 4 , 2008-03-12 , 860546/0001179110-08-005722
Form 4/A , 2008-03-12 , 860546/0001179110-08-005712
Form 4/A , 2008-03-06 , 860546/0001179110-08-005284
Form 424B7 , 2008-03-06 , 860546/0001104659-08-015830
Form 4 , 2008-03-05 , 860546/0001179110-08-005130
Form 4 , 2008-03-05 , 860546/0001179110-08-005117
Form 4 , 2008-03-05 , 860546/0001179110-08-005116
Form 10-K , 2008-02-29 , 860546/0001047469-08-002084
Form 4 , 2008-02-29 , 860546/0001179110-08-004697
Form 4 , 2008-02-29 , 860546/0001179110-08-004695
Form 4 , 2008-02-29 , 860546/0001179110-08-004632
Form 4 , 2008-02-27 , 860546/0001179110-08-004360
Form 4 , 2008-02-27 , 860546/0001179110-08-004332
Form 4 , 2008-02-26 , 860546/0001179110-08-004113
Form SC 13G , 2008-02-15 , 860546/0001085601-08-000007
Form SC 13G/A , 2008-02-15 , 860546/0001068829-08-000024
Form SC 13G/A , 2008-02-14 , 860546/0000950133-08-000618
Form SC 13G/A , 2008-02-14 , 860546/0000932471-08-000526
Form SC 13G/A , 2008-02-14 , 860546/0000315066-08-001525
Form 8-K , 2008-02-14 , 860546/0001104659-08-010439
Form 8-K , 2008-02-13 , 860546/0001104659-08-010017
Form SC 13G/A , 2008-02-12 , 860546/0001036325-08-000020
Form SC 13G/A , 2008-02-11 , 860546/0000932471-08-000151
Form 4 , 2008-02-04 , 860546/0001179110-08-002166
Form 424B7 , 2008-02-01 , 860546/0001104659-08-006408
Form SC 13G , 2008-01-30 , 860546/0001086521-08-000004
Form 5 , 2008-01-29 , 860546/0001179110-08-001790
Form 4 , 2007-12-17 , 860546/0001179110-07-023541
Form 4 , 2007-12-14 , 860546/0001179110-07-023530
Form 4 , 2007-12-12 , 860546/0001179110-07-023222
Form 424B7 , 2007-12-05 , 860546/0001104659-07-086988
Form 4 , 2007-11-19 , 860546/0001179110-07-021753
Form 10-Q , 2007-11-09 , 860546/0001104659-07-081781
Form 8-K , 2007-11-06 , 860546/0001104659-07-080011
Form 8-K , 2007-11-05 , 860546/0001104659-07-079820
Form 424B7 , 2007-10-24 , 860546/0001104659-07-076669
Form 8-K , 2007-10-05 , 860546/0001104659-07-073554
Form 424B7 , 2007-09-25 , 860546/0001104659-07-071095
Form 4 , 2007-09-14 , 860546/0001179110-07-018300
Form 4 , 2007-09-13 , 860546/0001179110-07-018277
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