The custodian shall transfer in an appropriate manner the custodial property to the minor or the minor's estate on the earlier of:

1. 1. The minor's twenty-first birthday with respect to custodial property transferred pursuant to section 14-7654 or 14-7655.
2. 2. The minor's eighteenth birthday with respect to custodial property transferred pursuant to section 14-7656 or 14-7657.
3. 3. The minor's death.