** Real estate investment trust Iron Mountain's IRM.N shares rise ~2% to $102.14 premarket

** Co forecasts 2026 rev between $7.63 bln and $7.78 bln, vs. analysts' avg. estimate of $7.60 bln - data compiled by LSEG

** Expects adj. AFFO between $5.69 and $5.79 per share for 2026 vs. estimates of $5.73 per share

** Reports Q4 rev of $1.84 bln vs. estimates of $1.80 bln

** Up to last close, IRM has fallen 5.6% in the last 12 months

(Reporting by Anhata Rooprai in Bengaluru)

((Anhata.Rooprai@thomsonreuters.com))