<img src="https://ml.globenewswire.com/Resource/Download/22048b12-8c39-4bd4-a907-28880770ba2c?size=2" nborder="0" align="left" hspace="5" vspace="5" title="logo (1).jpg" alt="Brookfield Office Properties Inc."/>Not for distribution to U.S. newswire services nor for dissemination to the United States All amounts in Canadian dollars BROOKFIELD NEWS, Sept. 17, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- Brookfield Office Properties Inc., a subsidiary of Brookfield Property Partners L.P., today announced an extension to the conversion privilege on its Class AAA Preference Shares, Series R (“Series R Shares”) (TSX: BPO.PR.R) to September 23, 2026. Holders of Series R Shares have the right, at their option, exercisable no later than 5:00 p.m. (Toronto time) on September 23, 2026, to convert all or part of their Series R Shares, on a one-for-one basis, into Class AAA Preference Shares, Series S (the “Series S Shares”), effective September 30, 2026. As previously announced, if declared, the fixed quarterly dividends on the Series R Shares for the five years commencing October 1, 2026 and ending September 30, 2031 will be paid at an annual rate of 6.829000% ($0.4268125 per share per quarter). The quarterly floating rate dividends on the Series S Shares have an annual rate, calculated for each quarter, of 3.48% over the annual yield on three-month Government of Canada treasury bills. The actual quarterly dividend rate for the October 1, 2026 to December 31, 2026 dividend period for the Series S Shares will be 1.454360% (5.770000% on an annualized basis) and the dividend, if declared, for such dividend period will be $0.363590 per share, payable on December 31, 2026. Holders of Series R Shares are not required to elect to convert all or any part of their Series R Shares into Series S Shares. As provided in the share conditions of the Series R Shares, (i) if Brookfield determines that there would be fewer than 1,000,000 Series R Shares outstanding after September 30, 2026, all remaining Series R Shares will be automatically converted into Series S Shares on a one-for-one basis effective September 30, 2026; and (ii) if Brookfield determines that there would be fewer than 1,000,000 Series S Shares outstanding after September 30, 2026, no Series R Shares will be permitted to be converted into Series S Shares. There are currently 9,946,218 Series R Shares outstanding. About Brookfield Office Properties Brookfield Office Properties Inc. is a subsidiary of Brookfield Property Partners L.P., one of the world’s largest commercial real estate companies, with over $88 billion in total assets. For more information, please visit <a href="https://www.globenewswire.com/Tracker?data=MFL4mMw2Psvh36kC-ZRZfF1HPV4zCny9A1tf_0nYeeWzPyPmjv1izg27XfeQy__tw7qOa-CAOrkhMMFSapECMQeFo0q4gQ3dlmb5sqyECvk=" rel="nofollow" target="_blank" title="bpy.brookfield.com/bpo">bpy.brookfield.com/bpo</a>. Brookfield Contact: Keren Dubon Investor Relations Tel.: 212-618-3440 Email: <a href="https://www.globenewswire.com/Tracker?data=3IZRmbGC22o6daA0e5cPjsdgqSTvHurNVKcQtmVA8b2IhgAQhC5w7fcIH_o_C0Qkf2AUnOiz6jNm8DZsFSbs_er5GPVDzPUKqnESVPRlpkI8y90Be5Ivb07X5S2pUTJH" rel="nofollow" target="_blank" title="keren.dubon@brookfield.com">keren.dubon@brookfield.com</a> <img alt="" src='https://ml.globenewswire.com/media/ZDA0OGNkMDQtM2MzYi00ZDViLTg3ZmYtNTJiYTgzZTg5ZTUzLTEwNDA0NTMtMjAyNi0wOS0xNy1lbg==/tiny/Brookfield-Office-Properties-I.png' referrerpolicy='no-referrer-when-downgrade' />

Brookfield Office Properties Announces Extension of Conversion Privilege on Its Class AAA Series R Preference Shares

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