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Ryanair Holdings plc disclosed a Form 6-K with a TR-1 notification from Artisan Partners Limited Partnership indicating it crossed above the 4% voting rights threshold to 4.022% (42,091,516 shares, ISIN IE00BYTBXV33) on March 23, 2026, up from 3.996%. The notification was received by the issuer on March 25, 2026.