Compound for organic electric element, organic electric element comprising the same, and electronic device thereof

A compound of Formula 24:

• wherein Ar4, Ar5, Ar10 and Ar11 are each independently a C6-C20 aryl group or a fluorenyl group,
• L5 is a C12-C20 heterocyclic group containing at least one heteroatom selected from the group consisting of O and S,
• wherein Ar4, Ar5, Ar10, Ar11 and L5 may be each optionally substituted with one or more substituents selected from the group consisting of deuterium, a C1-C20 alkyl group, a C6-C20 aryl group, and a C6-C20 aryl group substituted with deuterium.