Sebrango did not receive a qualifying offer from the Panthers on Monday, per Jordan McPherson of the Miami Herald.
Sebrango is now free to sign with any other NHL club when free agency opens July 1. The left-shot defenseman was claimed off waivers by Florida from Ottawa at the beginning of last season. Sebrango went on to supply eight helpers and 76 hits over 40 games with the Panthers, in addition to appearing in two regular-season contests with the Senators.