Post-event processing (PEP) refers to a prolonged and negative rumination following anxiety-provoking social events. Because PEP may maintain social anxiety over time, it is important to reduce this repetitive, negative thinking. Past research has shown that PEP can be reduced through self-compassion. As such, the primary purpose of the present study was to examine the circumstances under which self-compassion buffers against PEP. Given that PEP may be exacerbated by negative performance feedback, we examined whether self-compassion would buffer against PEP under these circumstances (i.e., receiving negative performance feedback). Participants (N = 66) provided an impromptu speech and were randomly assigned to receive either positive or negative speech feedback. As expected, negative performance feedback led to significantly more PEP than positive feedback. However, whereas this effect was particularly pronounced amongst those low on self-compassion, there were no significant differences between conditions on PEP amongst those high on self-compassion. The findings from the present study suggest that trait self-compassion serves to limit PEP in situations where negative performance feedback is provided. This work builds on the benefits of self-compassion in the context of social stress.