No does not fit. Your Sigma lens has a Sony A-mount connection. Sony has stopped the production and distribution of A-mounts. The new Sonys have an E-mount connection. There are adapters from A to E-mount, but in my opinion this is only worthwhile for high-quality lenses. There are also various disadvantages. So it is best to buy everything new with a new E-mount connection. The other manufacturers are also phasing out their mirror systems. They are all going mirrorless.