COPT Defense Properties Annual report pursuant to Section 13 and 15(d)

Earnings Per Share ("EPS") and Earnings Per Unit (“EPU”) (Details 2)

Earnings Per Share ("EPS") and Earnings Per Unit (“EPU”) (Details 2) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Conversion of common units
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	3,897	3,869	4,235
Conversion of Series I preferred units
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	176	176	176
Conversion of Series K preferred shares
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	434	434	434
Restricted Stock
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	401	385	461
Stock Options
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	492	636	772
Corporate Office Properties, L.P. \| Restricted Stock
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	401	385	461
Corporate Office Properties, L.P. \| Stock Options
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	492	636	772
Corporate Office Properties, L.P. \| Conversion of Series I preferred units
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	176	176	176
Corporate Office Properties, L.P. \| Conversion of Series K preferred units
Antidilutive securities
Weighted average antidilutive securities excluded from computation of diluted earnings per share (in shares)	434	434	434

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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