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PARISABVXBearishCorporate Developmentsnews

High materiality8/10

Abivax launches $600 million ADS offering; near-term dilution risk for ABVX

Jun 30, 2026, 4:47 PM EDT1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

Large, structured equity issuance typically dilutes current shareholders; near-term price pressure expected as new shares enter the market and trading on Euronext is paused temporarily. The final price and size depend on book-building dynamics and market conditions, with potential spillover to listed ABVX (Nasdaq) and cross-market liquidity.

AI summary

What happened, with direct paths to the underlying reporting

Abivax announced an underwritten public offering of about $600 million in ADSs, with a potential 15% greenshoe. ADSs will trade on Nasdaq under ABVX, while Euronext Paris will suspend ordinary share trading on July 1 before the ADS listing opens. Proceeds will fund obefazimod commercialization in the US, UC/Crohn trial work, and general corporate purposes, with final terms to be set after book-building.

Abivax launches approximately $600 million ADS offering.
Underwriters include Leerink Partners, Morgan Stanley, Piper Sandler, Guggenheim.
ADSs to trade on Nasdaq ABVX; ordinary shares on Euronext ABVX.
Use of proceeds: obefazimod US commercialization, UC/Crohn trials, general corporate.
Paris listing suspended July 1; ADS trading opens July 1 after pricing.

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