Sam's contract with Adidas is up this year. He is currently trying to show the brand his worth so he can get resigned (source I believe is Emma A's podcast with him recently). He is probably banking on some of his non-performance based attributes to push him over the edge with Adidas in order to get another contract. His track times alone are probably not going to get him there but the relatively large social media presence and the role as Tinman's creative director(?, he designs a lot of the stuff?) might do it.
Reed (and Drew of course) also has a contract with Adidas outside of the Tinman team sponsorship the other team members have (not sure about Goose). He also ran quite well at Boston so things are looking promising for him on the contract renewal front (not sure when his is up).