** Shares of health insurer Humana HUM.N fall 4% to $173.99 premarket

** Co expects 2026 adjusted profit to be at least $9 per share, compared with analysts' average estimate of $11.92 per share, according to data compiled by LSEG

** Co says "For 2026, the level of conservatism in our initial guidance is higher than typical to account for the dynamic environment"

** Humana expects 2026 individual Medicare Advantage membership growth of approximately 25% over 2025

** Co posts Q4 adjusted loss of $3.96 vs estimated loss of $4.01

** Humana's Q4 total revenue came in at $32.64 billion vs estimates of $32.08 billion

** Stock has been down 29.2% in 2025