SWEET KENNETH S 4

4 · CORPORATE OFFICE PROPERTIES TRUST · Filed Jun 11, 2010

Form 4

Period: 2010-06-09

Director

Transactions

Exercise/Conversion
Common Shares
2010-06-09$26.94/sh+5,000$134,700→ 27,000 total
Exercise/Conversion
Common Shares
2010-06-09$16.20/sh+5,000$81,000→ 17,000 total
Exercise/Conversion
Common Shares
2010-06-09$29.98/sh+5,000$149,900→ 32,000 total
Exercise/Conversion
Options of Common Shares
2010-06-09$13.40/sh−5,000$67,000→ 35,000 total
Exercise: $13.40From: 2002-05-16Exp: 2012-05-16→ Common Stock (5,000 underlying)
Exercise/Conversion
Common Shares
2010-06-09$19.63/sh+5,000$98,150→ 22,000 total
Exercise/Conversion
Options of Common Shares
2010-06-09$29.98/sh−5,000$149,900→ 15,000 total
Exercise: $29.98From: 2009-05-09Exp: 2019-05-09→ Common Stock (5,000 underlying)
Exercise/Conversion
Common Shares
2010-06-09$13.40/sh+5,000$67,000→ 12,000 total
Exercise/Conversion
Options of Common Shares
2010-06-09$16.20/sh−5,000$81,000→ 30,000 total
Exercise: $16.20From: 2003-05-15Exp: 2013-05-15→ Common Stock (5,000 underlying)
Exercise/Conversion
Options of Common Shares
2010-06-09$19.63/sh−5,000$98,150→ 25,000 total
Exercise: $19.63From: 2004-05-13Exp: 2014-05-13→ Common Stock (5,000 underlying)
Exercise/Conversion
Options of Common Shares
2010-06-09$8.81/sh−5,000$44,060→ 20,000 total
Exercise: $26.94From: 2005-05-19Exp: 2015-05-19→ Common Stock (5,000 underlying)

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