California Code, Financial Code - FIN § 14851

(a) A credit union may issue shares as follows:

(b) Membership privileges, including voting and obtaining a loan, may not be made available to a nonmember as a result of ownership of shares solely as a coowner of shares with a member.  A certificate or other evidence of shares that is issued shall contain the words “No transfer of voting rights or other membership privilege is permitted by virtue of a transfer of shares.” Shares may be transferred to a public agency lawfully entitled to receive the shares when designated by a member as an assignee of an account pledged as a surety deposit to the public agency by the member.

(c) A credit union that has a low-income designation pursuant to Section 701.34 of the regulations of the National Credit Union Administration (12 C.F.R. Sec. 701.34) may issue shares to nonmembers.  Except with the written approval of the commissioner, the total number of shares issued by the credit union to nonmembers pursuant to this subdivision shall not exceed 20 percent of the unimpaired capital and surplus of the credit union.