Brain-computer interface (BCI)-mediated functional electrical stimulation (FES) of stroke impaired upper extremity motor function has been shown to improve motor capacity but accurate dosing of BCI-FES has not been determined. This analysis seeks to determine whether participants with a greater number of FES runs realized greater change in the Stroke Impact Scale-Hand Function subdomain (SIS-hf) as a result of intervention. Participants (n = 14, 8 females, mean age = 61.3 ± 11.5 yr) in an ongoing study completed up to 30 hours of BCI-FES intervention. These participants were grouped post hoc into two groups, high (greater than 184 runs) and low (less than 184 runs) dosages of BCI-FES intervention. All participants underwent a series of behavioral tests at baseline and completion which included the Stroke Impact Scale-hand function (SIS-hf) domain. Group mean change in SIS-hf scores were compared using an independent samples t-test. Participants who completed 15 intervention sessions with fewer than 184 BCI-FES runs (n = 7) had a greater mean increase in SIS-hf scores (group mean difference = 2.29 ± 4.65) compared to those who completed more than 184 runs with paired FES (n = 7, group mean difference = 0.86 ± 1.68). These group mean differences as a result of intervention were not statistically significant t (7.54) = 0.77, p = 0.47. As expected, SIShf scores increased in both low-dose and high-dose groups of participants; however, the present results suggest that increasing the dose (i.e., number of runs) of BCI-FES intervention may not necessarily result in greater motor recovery in stroke participants.