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4

Changes in Ownership

OPPENHEIMER HOLDINGS INC Filed 2026-05-11 Acc 0001628280-26-033455

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4 Changes in Ownership , xslF345X06/wk-form4_1778530092.xml

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2026-05-11 4 Changes in Ownership
2026-05-11 4 Changes in Ownership
2026-05-11 4 Changes in Ownership
2026-05-11 4 Changes in Ownership
2026-05-05 8-K Bylaws or fiscal year change · Shareholder vote results
2026-05-04 8-K Regulation FD disclosure

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