Cal. Code Regs. tit. 10 § 260.141.10
In cases where securities are issued pursuant to a limited offering qualification and (a) a variation from the standards normally imposed in an open qualification is approved by the Commissioner based upon the characteristics of the particular purchasers or their close relationship with the issuer and the Commissioner determines that there is a substantial danger that subsequent transfers of such securities might be unfair, unjust or inequitable to the subsequent purchasers thereof despite the provisions of the Code requiring the qualification of nonissuer transactions, or (b) the applicant requests that a restriction on transfer be imposed, a condition may be imposed on the qualification restricting the transfer of the securities to be offered and sold and requiring a legend on the certificates therefor in accordance with Section 260.141.11 of these rules.
Cal. Code Regs. Tit. 10, § 260.141.10