(1) net revenue of the pharmacy benefits manager from sales of prescription drugs to purchasers made through the pharmacy benefits manager's network of contractually affiliated retail pharmacies or through the pharmacy benefits manager's mail order pharmacies, with respect to the pharmacy benefits manager's entire client base of purchasers;

(2) total prescription drug expenditures applicable to the purchaser;

(3) total manufacturer payments earned by the pharmacy benefits manager during the applicable reporting period; and

(4) total rebates applicable to the purchaser during the applicable reporting period.

(1) its current best estimate of the amount of each item; and

(2) an updated report containing the exact amount of each item immediately after it becomes available.

(2) Notwithstanding the provisions of paragraph (1) of this subsection, if a pharmacy benefits manager requires a nondisclosure agreement under which a purchaser agrees that the information in subsections (a) and (b) of this section is proprietary information, the pharmacy benefits manager may not be required to provide the information until the purchaser has signed the nondisclosure agreement.