Leases	3 Months Ended
Mar. 31, 2026
Leases [Abstract]
Leases	Leases Redwood City Lease The Company’s lease arrangements at March 31, 2026 consist of a sublease for office space at its headquarters in Redwood City, California that commenced in July 2022 (the “Redwood Sublease”). The Redwood Sublease is classified as an operating lease. GPCR USA was subleasing approximately 8,392 square feet of office space in Redwood City, California for its operations that began on July 15, 2022. This 45-month sublease is an operating lease agreement that ended on April 14, 2026. The monthly base rent was approximately $50 for the first six months after the Acquisition. Base rent thereafter is subject to an increase of 3% over the remaining nine months. On January 29, 2026, the Company received a payment demand letter and notice of default from Dren Bio Management, Inc. (formerly known as Dren Brio, Inc.) (“Dren Bio”) whereby Dren Bio notified the Company that an event of default has occurred under the sublease for failure to make rent payments and related late charges and interest and demanded that the Company immediately pay the past due rent and late charges and interest. On March 3, 2026, the Company received a Three Day Notice to Pay Rent or Quit from Dren Bio demanding payment of unpaid rent payments of approximately $0.7 million in connection with the sublease of its facilities situated in Redwood City or in the alternative quit and deliver up possession of the premises. Following receipt of such notice, the Company did not remit a payment and on March 9, 2026, Dren Bio filed a Complaint for Unlawful Detainer against GPCR USA in the Superior Court of California, County of San Mateo, seeking restitution of possession of the premises and forfeiture of the sublease and the unpaid rent payments of approximately $0.7 million, damages and attorney’s fees. The Company vacated the facility in Redwood City as of April 15, 2026. The Company is currently reviewing the complaint and evaluating its available defenses and potential responses. Chicago Lease On February 13, 2025, the Company executed a Lease Termination Agreement with its landlord related to the Chicago, Illinois lease effective as of January 31, 2025 (the “Chicago Lease”). As a result of this early termination for the Chicago Lease that commenced on July 1, 2020 and would have ended on June 30, 2030, the Company vacated the Chicago office and stopped paying any further amounts owed to its landlord. There were no additional fees or costs related to the early termination. The Company recognized a $6,000 gain in the first quarter of 2025 related to this early termination.

GPCR USA was subleasing approximately 8,392 square feet of office space in Redwood City, California for its operations that began on July 15, 2022. This 45-month sublease is an operating lease agreement that ended on April 14, 2026. The monthly base rent was approximately $50 for the first six months after the Acquisition. Base rent thereafter is subject to an increase of 3% over the remaining nine months. On January 29, 2026, the Company received a payment demand letter and notice of default from Dren Bio Management, Inc. (formerly known as Dren Brio, Inc.) (“Dren Bio”) whereby Dren Bio notified the Company that an event of default has occurred under the sublease for failure to make rent payments and related late charges and interest and demanded that the Company immediately pay the past due rent and late charges and interest. On March 3, 2026, the Company received a Three Day Notice to Pay Rent or Quit from Dren Bio demanding payment of unpaid rent payments of approximately $0.7 million in connection with the sublease of its facilities situated in Redwood City or in the alternative quit and deliver up possession of the premises. Following receipt of such notice, the Company did not remit a payment and on March 9, 2026, Dren Bio filed a Complaint for Unlawful Detainer against GPCR USA in the Superior Court of California, County of San Mateo, seeking restitution of possession of the premises and forfeiture of the sublease and the unpaid rent payments of approximately $0.7 million, damages and attorney’s fees. The Company vacated the facility in Redwood City as of April 15, 2026. The Company is currently reviewing the complaint and evaluating its available defenses and potential responses.

On February 13, 2025, the Company executed a Lease Termination Agreement with its landlord related to the Chicago, Illinois lease effective as of January 31, 2025 (the “Chicago Lease”). As a result of this early termination for the Chicago Lease that commenced on July 1, 2020 and would have ended on June 30, 2030, the Company vacated the Chicago office and stopped paying any further amounts owed to its landlord. There were no additional fees or costs related to the early termination. The Company recognized a $6,000 gain in the first quarter of 2025 related to this early termination.