Canadian-US actor Michael J. Fox (L) and US singer/songwriter/guitarist John Mayer attend the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)

Canadian-US actor Michael J. Fox attends the third annual Social Impact Summit, hosted by The Hollywood Reporter and the Social Impact Fund, at the DGA Theatre in Los Angeles on July 22, 2026. (Photo by VALERIE MACON / AFP via Getty Images)