Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 307

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 307
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 may include, but are not limited to, banning or expanding bans on Russia or certain persons or entities associated with Russia from global payment systems that facilitate cross-border payments, restricting the settlement of securities transactions by certain investors, and freezing Russian assets or those of particular countries, entities or persons with ties to Russia (e.g., Belarus). Such sanctions or other similar measures – which may impact companies in many sectors, including energy, financial services, technology, accounting, quantum computing, shipping, aviation, metals and mining, defense, architecture, engineering, construction, manufacturing, and transportation, among others – and Russia’s countermeasures may negatively impact the Fund’s performance and/or ability to achieve its investment objective. For example, certain investments in Russian companies or instruments tied to Russian companies may be prohibited and/or existing investments may become illiquid (e.g., in the event that transacting in certain existing investments is prohibited, securities markets close, or market participants cease transacting in certain investments in light of geopolitical events, sanctions or related considerations), which could render any such securities held by a Fund unmarketable for an indefinite period of time and/or cause the Fund to sell portfolio holdings at a disadvantageous time or price or to continue to hold investments that a Fund no longer seeks to hold. It is also possible that such sanctions, export and import controls, or similar measures may prevent U.S.-based entities that provide services to the Fund from transacting with Russian or Belarusian entities. Under such circumstances, the Fund may not receive payments due with respect to certain investments, such as the payments due in connection with a Fund’s holding of a fixed income security. In addition, such sanctions and other similar measures, and the Russian government’s response, could result in a downgrade of Russia’s credit rating or of securities of issuers located in or economically tied to Russia, devaluation of Russia’s currency and/or increased volatility with respect to Russian securities and the ruble. More generally, investments in Russian securities are highly speculative and involve significant risks and special considerations not typically associated with investments in the securities markets of the U.S. and most other developed

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countries. Over the past century, Russia has experienced political, social and economic turbulence and has endured decades of communist rule under which tens of millions of its citizens were collectivized into state agricultural and industrial enterprises. Since the collapse of the Soviet Union, Russia’s government has been faced with the daunting task of stabilizing its domestic economy, while transforming it into a modern and efficient structure able to compete in international markets and