No split.
You get a dividend, which means additional gifted PREFERRED shares on top of your existing common shares. 1 preferred share for every 5000 common shares.
If you want, you can also exchange some or all of your commons back to the company in exchange for preferred shares. For that, you get 1 preferred share for every 250 common shares. This part is completely optional. The company will want it because it reduces common shares outstanding, but you can decide for yourself if you'd rather have common or preferred shares.