TOI-4336 A is a cool M-dwarf (about 0.31 solar masses, 3,307 K, 0.33 solar radii), 22.5 light-years from Earth. TOI-4336 A c is a 1.6-Earth-mass planet, with an orbital period of 7.6 days, at 0.051 AU from its star, and an equilibrium temperature near 400 K, discovered in 2026 via transit. TOI-4336 A b is a 3.3-Earth-mass planet, with an orbital period of 16.3 days, at 0.085 AU from its star, and an equilibrium temperature near 309 K, discovered in 2024 via transit. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.