Birkenstock Holding PLC (BIRK) SEC Filings — 2026 1 SEC filing for Birkenstock Holding PLC (BIRK) in 2026. FilingsBirkenstock Holding PLC 6-K Filing — 6-K · Apr 13, 2026 ExploreAll BIRK Filings · BIRK 2025 · All 2026 Filings