v3.25.4

License Agreements | 6 Months Ended
--- | ---
Dec. 31, 2025
License Agreements |
License Agreements | Note 5 — License Agreements XOMA License Agreement In December 2017, the Company entered into a license agreement that has been subsequently amended (“XOMA License Agreement”) with XOMA Corporation (“XOMA”), through its wholly-owned subsidiary, XOMA (U.S.) LLC, pursuant to which XOMA granted an exclusive global license to the Company to develop and commercialize XOMA 358 (formerly X358 or RZ358, now ersodetug) for all indications. To date the Company has paid a total of $12.0 million in milestone payments to XOMA. The most recent milestone payment of $5.0 became due in May 2025 upon dosing of the last patient in the Company’s Phase 3 clinical trial for ersodetug and was paid in June 2025. The next milestone payment of $25.0 million will be due upon regulatory approval for ersodetug by any regulatory authority. After the final regulatory milestone, the Company will be required, upon the future commercialization of ersodetug, to pay royalties to XOMA based on the net sales of the related products and additional milestone payments to XOMA up to $185.0 million related to annual net sales amounts. There have been no events that would result in any royalty payments owed under the XOMA License Agreement to date. The Company records a liability for milestone payments under license agreements in the period that the milestone event is achieved. ActiveSite License Agreement In August 2017, the Company entered into a Development and License Agreement (the “ActiveSite License Agreement”) with ActiveSite Pharmaceuticals, Inc. (“ActiveSite”) pursuant to which the Company acquired the rights to ActiveSite’s Plasma Kallikrein Inhibitor program (“PKI Portfolio”). The Company initially focused on the development of RZ402 as a therapy for diabetic macular edema (“DME”). Following the completion of a Phase 2 clinical study for RZ402, the Company decided to pause the program to focus its resources on ersodetug. The Company is currently exploring the use of the PKI Portfolio to develop therapies for different indications. To date the company has paid a total of $4.0 million in milestone payments to ActiveSite. The most recent milestone payment of $3.0 million was in February 2023 after dosing of the first patient in a Phase 2 clinical trial for RZ402. The next milestone payment of $5.0 million will be due upon dosing of the first patient in a Phase 3 clinical trial. Upon the achievement of certain clinical and regulatory events and various sales-based milestones and alternative indication regulatory approvals under the ActiveSite License Agreement the company will be required to make additional milestone payments to ActiveSite up to $42.5 million. The Company is also required to pay royalties equal to 2.0% of any sales of products that use the PKI Portfolio. There have been no events that would result in any royalty payments owed under the ActiveSite License Agreement to date.

X
- Definition n/a + References No definition available. + Details
Name: | rzlt_LicenseAgreementsAbstract
Namespace Prefix: | rzlt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for information about License agreements. + References No definition available. + Details
Name: | rzlt_LicenseAgreementsTextBlock
Namespace Prefix: | rzlt_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration