Investor Presentaiton

SUMMARY OF 2020 ACCOMPLISHMENTS energy ENERGY STAR 87% of portfolio certified 5.GREEN BUILDING NG COUNCIL MEMBER 82% of portfolio certified GRES B ✰✰✰✰✰2020 GRES B ® Public Disclosure Green Star-rated 202er "A" Pobre Great Place To WorkⓇ Certified OCT 2020-OCT 2021 USA TM CRAIN'S NEW YORK BUSINESS Columbia GATEWAY COVID Ready by Carbon Health Best Places to Work in NYC, 2020 Portfolio-wide app for tenant communication App for daily symptom tracking of all employees ~50 Local community groups and national organizations supported EMS Tracking performance portfolio-wide in Energy Management System ESG Compensation Metrics in place for all employees ESG Initiatives comply with SASB, TCFD, GRI standards ENERGY STAR and LEED data are as of December 31, 2020 and reflect only those properties in which Columbia holds a majority ownership interest, at 100% of these assets, including those held through joint venture partnerships, and include all certified properties and eligible properties awaiting certification. LEED and the related logos are trademarks owned by the U.S. Green Building Council and are used with permission. Energy Star and the Energy Star mark are registered trademarks owned by the U.S. Environmental Protection Agency. These logos are used herein to identify Columbia buildings that have been awarded these designations. 16 10

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