REPLIGEN CORP Commitments Disclosure

License Agreement

In 2022, the Company entered into a 15-year exclusive License Agreement (the “Daylight Agreement”) with DRS Daylight Solutions, Inc. (“Daylight”), giving the Company exclusive license and commercialization rights to use certain technology and intellectual property subject to conditions set forth in the Daylight Agreement. This was later extended by one additional year in 2024. The Company agreed to pay Daylight (i) an initial, one-time, non-refundable, non-creditable upfront cash payment and (ii) certain quarterly royalty payments.

Pursuant to the Daylight Agreement, the Company obtains the exclusive, non-transferrable, right and license to use specifically in the field of bioprocessing, the Daylight intellectual property called Culpeo® QCL-IR Liquid Analyzer (“Culpeo”), which is a compact, intelligent spectrometer that uses the power of quantum cascade lasers to analyze and identify chemicals. Under the Daylight Agreement, the Company assumes responsibility for the commercialization and sale of Culpeo, in addition to the ability to incorporate the intellectual property into optimized products over the term of the Daylight Agreement. Daylight will continue to sell the products in the specified fields of Aerospace and Defense.

Collaboration Agreements

The Company licenses certain technologies that are, or may be, incorporated into its technology under several agreements and also has entered into several clinical research agreements that require the Company to fund certain research projects. Generally, the license agreements require the Company to pay annual maintenance fees and royalties on product sales once a product has been established using the technologies. Research and development expenses associated with license agreements were immaterial amounts for the years ended December 31, 2025, 2024 and 2023.

In 2018, the Company secured an agreement with Navigo Proteins GmbH (“Navigo”) for the exclusive co-development of multiple affinity ligands for which Repligen holds commercialization rights. The Company is manufacturing and supplying the first of these ligands, NGL-Impact®, exclusively to Purolite, who is pairing the Company’s high-performance ligand with Purolite’s agarose jetting base bead technology used in their Jetted A50 Protein A resin product. The Company also signed a long-term supply agreement with Purolite for NGL-Impact and other potential additional affinity ligands that may advance from the Company’s Navigo collaboration. The Navigo and Purolite agreements are supportive of the Company’s strategy to secure and reinforce the Company’s proteins business. The Company made royalty payments to related to these agreements of $4.7 million, $3.1 million and $3.8 million in the years ended December 31, 2025, 2024 and 2023, respectively.

Purchase Obligations

The Company has entered into purchase obligations in the normal course of business, that represent legally enforceable, non-cancellable commitments. These primarily include inventory contracts, such as agreements with manufacturers or distributors and software licenses. Outstanding obligations, at December 31, 2025 were $17.6 million. Future commitments to be settled in one year is $7.2 million, $7.6 million to be settled in one to three years, and $2.8 million to be settled in three to five years.

Legal Proceedings

From time to time, in the normal course of its operations, the Company is subject to litigation matters and claims relating to employee relations, business practices and patent infringement. Litigation can be expensive and disruptive to normal business operations. Moreover, the results of complex legal proceedings are difficult to predict, and the Company’s view of these matters may change in the future as the litigation and events related thereto unfold. The Company expenses legal fees as incurred. The Company records a provision for contingent losses when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. An unfavorable outcome to any legal matter, if material, could have an adverse effect on the Company’s operations or its financial results.