Tex. Bus. & Com. Code § 38.107
§ 38.107. Security
(a)
A registration statement filed under this chapter must be accompanied by:
(1)
a bond executed by a corporate surety approved by the secretary of
state and licensed to do business in this state;
(2)
an irrevocable letter of credit issued for the benefit of the
registrant by a supervised financial institution whose deposits are
insured by an agency of the federal government; or
(3)
a certificate of deposit in a supervised financial institution
whose deposits are insured by an agency of the federal government, the
principal of which may be withdrawn only on the order of the secretary
of state.
(b)
The bond, letter of credit, or certificate of deposit must be:
(1)
in the amount of $ 10,000; and
(2)
conditioned on the seller's compliance with this chapter.