13 CFR 124.508 - How is an 8(a) contract executed?
(a) An 8(a) contract can be awarded in the following ways:
(1) As a tripartite agreement in which the procuring activity, SBA and the Participant all sign the appropriate contract documents. There may be separate prime and subcontract documents (i.e., a prime contract between the procuring activity and SBA and a subcontract between SBA and the selected 8(a) concern) or a combined contract document representing both the prime and subcontract relationships; or
(b) Where SBA receives a contract for signature valued at or below the simplified acquisition threshold, it will sign the contract and return it to the procuring activity within three (3) days of receipt.