v3.25.2
Revenue
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
Revenue Recognition and Product Sales, Net

The Company recognizes product revenue from sales of MACI biopsy kits, MACI implants, MACI Arthro instruments, Epicel grafts, and NexoBrid following the five-step model in Accounting Standards Codification 606, Revenue Recognition.

MACI Biopsy Kits

MACI biopsy kits are sold directly to hospitals and ambulatory surgical centers based on contracted rates set forth in an approved contract or sales order. The Company recognizes MACI kit revenue upon delivery of the biopsy kit, at which time the customer (the facility) is in control of the kit. The kit is used by the treating surgeon to provide a sample of cartilage tissue to the Company, which can later be used to manufacture a MACI implant. The ordering of the kit does not obligate the Company to manufacture an implant nor does the receipt of the cartilage tissue by the Company from the customer following biopsy. The customer’s order of an implant is separate from the process of ordering the biopsy kit. Therefore, the sale of the biopsy kit and any subsequent sale of an implant are distinct contracts and are accounted for separately.
MACI Arthro Instruments

MACI Arthro instruments are sold directly to hospitals and ambulatory surgical centers based upon rates set forth in price lists. The Company recognizes revenue from the sale of MACI Arthro instruments upon delivery of the instruments, at which time the customer (the facility) is in control of the instruments. MACI Arthro instruments can be used by an orthopedic surgeon to deliver MACI to a treated patient using an arthroscopic approach. The customer’s order of a MACI implant is separate from the process of ordering the MACI Arthro instruments. Therefore, the sale of the MACI Arthro instruments and any sale of an implant are distinct and are accounted for separately.

MACI Implants

The Company contracts with two specialty pharmacies, Orsini Pharmaceutical Services, Inc. (“Orsini”) and AllCare Plus Pharmacy, Inc. (“AllCare”) to distribute MACI in a manner in which the Company retains the credit and collection risk from the end customer. The Company pays each specialty pharmacy a fee in each instance when it dispenses MACI for use in treating a patient. Both Orsini and AllCare perform collection activities to collect payment from customers. In addition, the Company sells MACI directly to hospitals pursuant to an agreed upon purchase order and to a distributor, DMS Pharmaceutical Group, Inc. (“DMS”) at a contracted rate for the treatment of patients at military facilities throughout the U.S. The Company engages a third party to provide services in connection with a patient support program to manage patient cases and to ensure that complete and correct billing information is provided to the insurers and hospitals.

Prior authorization and confirmation of coverage level by the patient’s private insurance plan, hospital or government payer is a prerequisite to the shipment of a MACI implant to a patient. The Company recognizes product revenue from sales of all MACI implants upon delivery at which time the customer obtains control of the implant and the claim is billable. The total consideration that the Company expects to collect in exchange for MACI implants (the “Transaction Price”) may be fixed or variable. Direct sales to hospitals or distributors are recorded at a contracted price, and there are typically no forms of variable consideration.

When the Company sells MACI through its specialty pharmacies, the Company is typically reimbursed by a third-party insurer or government payer, subject to a patient co-pay amount. Reimbursements from third-party insurers and government payers vary by patient and payer and are based on either contracted rates, publicly available rates, fee schedules or past payer precedents. Net product revenue is recognized net of estimated contractual allowances, which considers historical collection experience from both the payer and patient, denial rates and the terms of the Company’s contractual arrangements. The Company estimates expected collections for these transactions using the portfolio approach. The Company records a reduction to revenue at the time of sale for its estimate of the amount of consideration that will not be collected. In addition, potential credit risk exposure has been evaluated for the Company’s accounts receivable in accordance with ASC 326, Financial Instruments - Credit Losses. The Company assesses risk and determines a loss percentage by pooling accounts receivable based on similar risk characteristics. The loss percentage is calculated through the use of forecasts that are based on current and historical economic and financial information. This loss percentage was applied to the accounts receivables as of June 30, 2025. The total allowance for uncollectible consideration as of June 30, 2025 and December 31, 2024 was $5.9 million and $5.4 million, respectively. Changes to the estimate of the amount of consideration that will not be collected could have a material impact on the revenue recognized. A 50 basis points change to the estimated uncollectible percentage could result in an approximately $0.5 million decrease or increase in the revenue recognized for the six months ended June 30, 2025.

Changes in estimates of the Transaction Price are recorded through revenue in the period in which such change occurs. Changes in estimates related to prior periods are shown in the Revenue by Product and Customer table below and relate primarily to changes in the initial expected reimbursement or collection expectation upon completion of the billing claims process for MACI implants that occurred in a prior period.

Epicel

The Company sells Epicel directly to hospitals and burn centers based on contracted rates stated in an approved contract or purchase order. Similar to MACI, there is no obligation to manufacture Epicel grafts upon receipt of a skin biopsy. The Company recognizes product revenue from sales of Epicel upon its delivery to the hospital, at which time the customer is in control of the Epicel grafts, and the claim is billable to the hospital.
NexoBrid

The Company entered into exclusive license and supply agreements with MediWound in May 2019, pursuant to which MediWound will manufacture and supply NexoBrid on a unit price basis, which may be increased pursuant to the terms of the agreements.

In December 2022, the FDA approved a BLA for NexoBrid, granting a license for its commercial use in the U.S. NexoBrid is a topically-administered biological orphan product containing proteolytic enzymes. Through the 2022 BLA, NexoBrid was originally indicated for the removal of eschar in adults with deep partial-thickness and/or full thickness thermal burns. In August 2024, the FDA authorized the expansion of the product’s indication to include pediatric patients.

The Company sells NexoBrid to specialty distributors. These customers subsequently resell NexoBrid to hospitals and burn centers. Product revenue is recorded net of reserves for specialty distributor fees, prompt payment or other discounts and allowances for returns, as applicable. The Company recognizes product revenue from sales of NexoBrid when the specialty distributors take control of the product, which typically occurs upon delivery to the specialty distributors.

Revenue by Product and Customer

The following table and descriptions below show the products from which the Company generated its revenue for the periods indicated:
 Three Months Ended June 30,Six Months Ended June 30,
Revenue by product (in thousands) 2025202420252024
MACI implants, kits, and instruments
Implants based on contracted rate sold through a specialty pharmacy (a)
$39,430 $30,704 $71,471 $58,083 
Implants subject to third party reimbursement sold through a specialty pharmacy (b)
2,688 3,332 5,371 6,529 
Implants sold direct based on contracted rates (c)
8,903 8,099 17,325 14,501 
Implants sold direct subject to third-party reimbursement (d)
991 965 2,615 2,150 
Biopsy kits and instruments - direct bill642 492 1,238 1,058 
Change in estimates related to prior periods (e)
804 543 1,735 1,995 
Total MACI implants, kits, and instruments53,458 44,135 99,755 84,316 
Epicel
Direct bill (hospital)8,614 7,758 13,578 18,422 
NexoBrid1,168 769 2,505 1,205 
Total revenue$63,240 $52,662 $115,838 $103,943 
(a) Represents implants sold through Orsini and AllCare whereby such specialty pharmacies have a direct contract with the underlying insurance provider. The amount of reimbursement is based on contracted rates at the time of sale supported by the pharmacy’s direct contracts.
(b) Represents implants sold through Orsini and AllCare whereby such specialty pharmacy does not have a direct contract with the underlying payer and are subject to third-party reimbursement. The amount of reimbursement is established based on publicly available rates, fee schedules or past payer precedents.
(c) Represents implants sold directly from the Company to the facility based on a contract and known price agreed upon prior to the surgery date. Also represents direct sales under a contract to specialty distributor DMS.
(d) Represents implants sold directly from the Company to the facility based on a contract and known price agreed upon prior to the surgery date. The payment terms are subject to third-party reimbursement from an underlying insurance provider.
(e) Primarily represents changes in estimates related to implants sold through Orsini or AllCare and relate to changes to the initial expected reimbursement or collection expectations upon completion of the billing claims process. The change in estimates is a result of additional information, changes in collection expectations or actual cash collections received in the current period.