Commitments and Contingencies	6 Months Ended
Jun. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Abbreviated New Drug Application In January 2025, the Company received a Paragraph IV notice of certification (the “First Notice Letter”) from Annora Pharma Private Limited (“Annora”) regarding U.S. Patent Nos. 10,662,160; 11,117,867; and 11,618,733. In January 2026, the Company received an additional Paragraph IV notice of certification (the “Second Notice Letter” and, together with the First Notice Letter, the “Notice Letters”) from Annora regarding U.S. Patent No. 12,344,585. The Notice Letters advise that Annora has submitted an Abbreviated New Drug Application (“ANDA”) to the U.S. Food and Drug Administration (“FDA”) seeking approval to manufacture, use or sell a generic version of ORLADEYO in the United States prior to the expiration of four patents listed in the FDA’s Orange Book: U.S. Patent Nos. 10,662,160; 11,117,867; 11,618,733; and 12,344,585 (the “Challenged Patents”). The Notice Letters allege that the Challenged Patents, which expire in May 2040, are invalid, unenforceable and/or will not be infringed by the commercial manufacture, use or sale of the generic product described in Annora’s ANDA. The Notice Letters do not challenge the following six ORLADEYO Orange Book patents that expire in 2035: U.S. Patent Nos. 10,125,102; 10,329,260; 10,689,346; 11,230,530; 11,708,333; and 12,116,346. On March 10, 2025 (as supplemented by the First Amended Complaint filed in December 2025), the Company ﬁled a patent infringement lawsuit in the United States District Court for the District of Delaware against Annora, Hetero Labs Limited, Hetero USA, Inc., and Camber Pharmaceuticals, Inc. (collectively, the “Defendants”), asserting infringement of the Challenged Patents arising from Annora’s ANDA filing with the FDA. The Company is seeking, among other remedies, equitable relief enjoining the Defendants from infringing the Challenged Patents, as well as an order that the eﬀective date of any FDA approval of the ANDA would be a date no earlier than the expiration of the Challenged Patents (including any regulatory extensions). While the Company intends to vigorously defend its intellectual property rights protecting ORLADEYO, this matter is in the early stages of litigation and no assessment can be made as to the likely outcome of this matter or whether it will be material to the Company. Accordingly, an estimate of the potential loss, or range of loss, if any, to the Company relating to this matter is not possible at this time. Other Arrangements The Company has collaborative, licensing, and research and development services agreements in place for which it could be obligated to make payments upon certain developmental, regulatory, or commercial milestones, and future royalty payments, which would be reflected in the financial statements upon the occurrence of such contingent events. Except as disclosed in “Note 12—Collaborative and Other Relationships”, there have been no changes to material arrangements during the six months ended June 30, 2026 as compared to those disclosed in “Note 16—Collaborative and Other Relationships” to the audited consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2025.

In January 2025, the Company received a Paragraph IV notice of certification (the “First Notice Letter”) from Annora Pharma Private Limited (“Annora”) regarding U.S. Patent Nos. 10,662,160; 11,117,867; and 11,618,733. In January 2026, the Company received an additional Paragraph IV notice of certification (the “Second Notice Letter” and, together with the First Notice Letter, the “Notice Letters”) from Annora regarding U.S. Patent No. 12,344,585. The Notice Letters advise that Annora has submitted an Abbreviated New Drug Application (“ANDA”) to the U.S. Food and Drug

Administration (“FDA”) seeking approval to manufacture, use or sell a generic version of ORLADEYO in the United States prior to the expiration of four patents listed in the FDA’s Orange Book: U.S. Patent Nos. 10,662,160; 11,117,867; 11,618,733; and 12,344,585 (the “Challenged Patents”). The Notice Letters allege that the Challenged Patents, which expire in May 2040, are invalid, unenforceable and/or will not be infringed by the commercial manufacture, use or sale of the generic product described in Annora’s ANDA. The Notice Letters do not challenge the following six ORLADEYO Orange Book patents that expire in 2035: U.S. Patent Nos. 10,125,102; 10,329,260; 10,689,346; 11,230,530; 11,708,333; and 12,116,346.

On March 10, 2025 (as supplemented by the First Amended Complaint filed in December 2025), the Company ﬁled a patent infringement lawsuit in the United States District Court for the District of Delaware against Annora, Hetero Labs Limited, Hetero USA, Inc., and Camber Pharmaceuticals, Inc. (collectively, the “Defendants”), asserting infringement of the Challenged Patents arising from Annora’s ANDA filing with the FDA. The Company is seeking, among other remedies, equitable relief enjoining the Defendants from infringing the Challenged Patents, as well as an order that the eﬀective date of any FDA approval of the ANDA would be a date no earlier than the expiration of the Challenged Patents (including any regulatory extensions). While the Company intends to vigorously defend its intellectual property rights protecting ORLADEYO, this matter is in the early stages of litigation and no assessment can be made as to the likely outcome of this matter or whether it will be material to the Company. Accordingly, an estimate of the potential loss, or range of loss, if any, to the Company relating to this matter is not possible at this time.

The Company has collaborative, licensing, and research and development services agreements in place for which it could be obligated to make payments upon certain developmental, regulatory, or commercial milestones, and future royalty payments, which would be reflected in the financial statements upon the occurrence of such contingent events. Except as disclosed in “Note 12—Collaborative and Other Relationships”, there have been no changes to material arrangements during the six months ended June 30, 2026 as compared to those disclosed in “Note 16—Collaborative and Other Relationships” to the audited consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2025.