Subsection (a)(2) of this section shall not obligate any person, in or in connection with a transaction in a contract of sale of a commodity for future delivery, or other agreement, contract or transaction subject to paragraphs (1) and (2) of section
7a
(g) of this title, with another person, to disclose to the other person nonpublic information that may be material to the market price, rate, or level of the commodity or transaction, except as necessary to make any statement made to the other person in or in connection with the transaction not misleading in any material respect.