Registration Statement on Form S-1 (Registration No. 333-261887), as amended (the “Registration Statement”)

the Articles of Organization of NuWave filed with the State Department of Assessments and Taxation of Maryland (the “Department”) on September 30, 1999 and the Articles of Amendment of NuWave filed with the Department on January 28, 2021 (the “NuWave Articles of Organization”);

the Third Amended and Restated Operating Agreement of NuWave, dated as of June 20, 2020, as amended by Amendment No. 1 to Third Amended and Restated Operating Agreement of NuWave, dated as of December 21, 2020 (the “NuWave Operating Agreement”);

the Articles of Organization of PCI filed with the Department on September 12, 2007 (the “PCI Articles of Organization” and together with the NuWave Articles of Organization, the “Maryland Articles of Organization”);

the Second Amended and Restated Operating Agreement of PCI, dated as of December 21, 2020 (the “PCI Operating Agreement” and together with the NuWave Operating Agreement, the “Maryland Operating Agreements”);

the Articles of Entity Conversion of Open Solutions Group, Inc. filed with the Virginia State Corporation Commission (the “Commission”) on December 1, 2020, including the Plan of Entity Conversion attached thereto as Attachment A (the “Plan of Entity Conversion”), the Articles of Organization of Open Solutions attached to the Plan of Entity Conversion as Exhibit A (the “Virginia Articles of Organization”), and the Certificate of Entity Conversion issued by the Commission on December 1, 2020;

the Amended and Restated Operating Agreement of Open Solutions, dated as of December 2, 2020 (the “Virginia Operating Agreement”);

the Articles of Incorporation of ProModel filed with the Utah Department of Commerce, Division of Corporations & Commercial Code (the “Division”) on August 4, 1988, the Articles of Restatement of the Articles of Incorporation of ProModel filed with the Division on June 24, 1994, the Articles of Merger of ProModel filed with the Division on April 14, 2000 and the Articles of Amendment to Articles of Incorporation of ProModel filed with the Divisions on December 23, 2020 (collectively, the “Utah Articles of Incorporation”);

the Amended and Restated Bylaws of ProModel dated as of December 21, 2020 (the “Utah Bylaws”);

certain resolutions adopted by the board of managers or the board of directors, as applicable, of each of the Guarantors (the “Authorizing Resolutions”);

an executed copy of the Indenture, dated as of December 7, 2021 (the “Indenture”), by and among the Registrant, as issuer, the Guarantors and each of the other guarantors party thereto from time to time, and Wilmington Trust, National Association, as trustee;

a certificate of one or more officers of each of the Guarantors, dated as of a recent date (the “Officers’ Certificate”), to the effect that, among other things, the Maryland Articles of Organization, the Maryland Operating Agreements, the Virginia Articles of Organization, the Virginia Operating Agreement, the Utah Articles of Incorporation, the Utah Bylaws and the Authorizing Resolutions are true, correct and complete, have not been rescinded or modified and are in full force and effect on the date of the Officers’ Certificate, and certifying, among other things, as to the manner of adoption of the Authorizing Resolutions and the form, approval, execution and delivery of the Indenture (which includes the Guarantees); and

such other documents and matters as we have deemed necessary and appropriate to render the opinions set forth in this letter, subject to the limitations, assumptions, and qualifications noted below.

each person executing any instrument, document or agreement on behalf of any party (other than the Guarantors) is duly authorized to do so;

each natural person executing any instrument, document or agreement is legally competent to do so;

there are no material modifications of, or amendments to, the pertinent sections of the Indenture (which includes the Guarantee);

all documents submitted to us as originals are authentic; all documents submitted to us as certified, facsimile or photostatic copies conform to the original document; all signatures on all documents submitted to us for examination are genuine; and all public records reviewed are accurate and complete;

the Officers’ Certificate and all other certificates submitted to us are true and correct both when made and as of the date hereof;

the consummation of the transactions contemplated by the Indenture will result in receipt by the Guarantors of good and valuable consideration, and such transactions are fair and reasonable to the Guarantors; and

each of the parties thereto (other than the Guarantors) have duly and validly authorized, executed and delivered each instrument, document and agreement, including but not limited to the Indenture, executed in connection with the transactions contemplated by the Indenture to which such party is a signatory, and such party’s obligations set forth therein are its legal, valid and binding obligations, enforceable in accordance with their respective terms.

The execution and delivery by each of NuWave, PCI and Open Solutions of the Indenture (which includes the Guarantees) have been duly authorized by all necessary limited liability company action on the part of each of NuWave, PCI and Open Solutions, and the Indenture (which includes the Guarantees) has been duly executed and delivered by each of NuWave, PCI and Open Solutions.

The execution and delivery by ProModel of the Indenture (which includes the Guarantees) have been duly authorized by all necessary corporate action on the part of ProModel, and the Indenture (which includes the Guarantees) has been duly executed and delivered by ProModel.