Upper limits on the F444W and F210M flux ratio of ϵ Eri b with respect to the host star from deep JWST/NIRCam imaging observations. Left column: S/N measured in an image following D. Mawet et al. (2014) that corresponds to a 5σ significance detection as a function of separation for observations in F444W (top) and F210M (bottom). Center column: retrieved S/N for a synthetic companion injected at various contrast ratios at 1″ separation, averaged across multiple position angles, for the reduction geometry noted in the title (using 10 principal components). The S/N equivalent to 5σ significance is marked with a horizontal dashed line. Right column: the ADI+RDI PSF-subtracted images of ϵ Eri in both filters for the reduction geometries in the center panel with an example synthetic companion injected at the contrast ratio corresponding to 5σ detection significance. The expected location of ϵ Eri b on 2025 August 29 (W. Thompson et al. 2025) is shown with a “+” marker and the corresponding 1σ (solid) and 2σ (dotted) uncertainty contours. No significant point-source signal is recovered at ϵ Eri b’s expected location.