Bayer (XETRA: BAYN) is a publicly listed company headquartered in Leverkusen, Germany that owns 9 consumer brands across 4 categories, and has 1 recorded transaction.[1]
Bayer was founded in Germany in 1863 as a dye maker and synthesised aspirin in 1897. It spans pharmaceuticals, crop science and consumer health, and its 2018 acquisition of Monsanto brought both the Roundup weedkiller and tens of thousands of lawsuits alleging that glyphosate causes cancer.
Bayer acquired Monsanto for $128 per share in cash, creating the largest agricultural inputs company in the world. Regulators required Bayer to sell substantial seed and crop protection assets to BASF. The deal brought Bayer the Roundup brand and the glyphosate litigation attached to it, which has since cost it many billions in settlements.
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Frequently asked questions
What brands does Bayer own?
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Bayer owns 9 consumer brands tracked here, including Bepanthen, Aspirin, Alka-Seltzer, One A Day, Elevit and Canesten.
Is Bayer a German company?
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Yes. Bayer is headquartered in Leverkusen, Germany and was founded in 1863.
Who owns Bayer?
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Bayer is a publicly listed company owned by its shareholders; it trades as BAYN on the XETRA.
What was Bayer's most recent acquisition?
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The most recent completed acquisition recorded here is Roundup on 7 June 2018.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
[1]Bayer AG Annual Report 2025 — Bayer AG, Annual report, published 10 March 2026; retrieved 16 September 2026.