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ADARx Pharmaceuticals, Inc. Form 424B4 — Sep 25, 2026

Form 424B4Filed Sep 25, 2026, 8:11 PM ET0001193125-26-403094Original filing

ADARx Pharmaceuticals priced its IPO at $17.00 per share, selling 26,250,000 shares for gross proceeds of $446.25 million ($415.0 million net before expenses), with listing on Nasdaq under the symbol ADRX. Underwriters hold a 30-day option for up to 3,937,500 additional shares. AbbVie is purchasing 5,233,264 shares in a concurrent private placement at the IPO price, capped at $100.0 million, which would give AbbVie roughly 4.9% of shares outstanding after closing. AbbVie already paid ADARx a $335.0 million upfront fee in May 2025 under a siRNA collaboration with up to $7.45 billion in additional milestones plus tiered royalties.

Key figures

Greenshoe
3937500
Gross Proceeds
446250000
Offering Price
17
Shares Offered
26250000
Abb Vie Shares
5233264
Abb Vie Max Milestones
7450000000
Abb Vie Private Placement Cap
100000000
Net Proceeds Before Expenses
415012500
Underwriting Discount Total
31237500
Abb Vie Post Offering Ownership
approximately 4.9%
Abb Vie Upfront Payment May2025
335000000
Reserved Directed Share Percent
2%
Underwriting Discount Per Share
1.19

AI analysis

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