Pharmacy Benefit Prompt Pay Act; bring forward and prohibit spread pricing.

SB 2678 prohibits pharmacy benefit managers (PBMs) from charging "spread pricing" (extra fees beyond a drug’s actual cost plus dispensing fees) and requires transparency. Drug manufacturers must report wholesale drug costs quarterly, PBMs must submit annual financial reports detailing rebates and fees, and health insurers must report on prescription drug spending patterns. The Mississippi Department of Insurance will publish this data on a public website and enforce the law through investigations and penalties. The bill directly affects PBMs, drug manufacturers, insurers, and pharmacies by mandating financial transparency and banning unfair pricing practices.