We haven't run one of these since last fall, so here goes.  These are senior offers declined over roughly the last six months:

Ben Caplan (metaphysics, philosophy of language) at Ohio State University turned down an offer from the University of Bergen (Norway).

Richard Samuels (philosophy of mind & cognitive science) at Ohio State University turned down an offer from the University of Massachussetts, Amherst.

Declan Smithies (epistemology, philosophy of mind & cognitive science) at Ohio State University turned down an offer from the University of Rochester.

Feel free to add others in the comments–either the candidate or the Chair of the candidate's department may post the information.  Or you can e-mail me at bleiter-at-uchicago-dot-edu.