Tex. Business Organizations Code § 200.307

(a) A governing document of a real estate investment trust may provide that all or some of the board of trust managers may be divided into two or three classes. Each class must include the same or a similar number of trust managers as each other class.

(b) The terms of office of trust managers constituting the first class expire on the election of successors at the first annual meeting of shareholders after the election of those trust managers. The terms of office of trust managers constituting the second class expire on the election of successors at the second annual meeting of shareholders after election of those trust managers. The terms of office of trust managers constituting the third class, if any, expire on the election of successors at the third annual meeting of shareholders after election of those trust managers.

(c) If a governing document of the real estate investment trust provides for the classification of trust managers, an annual election for trust managers as a whole is not necessary. At each annual meeting held after the classification of trust managers, an election shall be held to elect the number of trust managers equal to the number of trust managers in the class the term of which expires on the date of the meeting, and those trust managers serve until:

(1) the second succeeding annual meeting if there are two classes; or

(2) the third succeeding annual meeting if there are three classes.

(d) Unless provided by the certificate of formation or a bylaw adopted by shareholders, staggered terms for trust managers do not take effect until the next annual meeting of shareholders at which trust managers are elected. Staggered terms for trust managers may not be effected if any shareholder has the right to cumulate votes for the election of trust managers and the number of trust managers is fewer than nine trust managers.