RBRK FY4Q26: Net New ARR Accelerates Into FY27; Identity S-Curve Inflection Confirmed

Growth momentum remains intact. Net new subscription ARR of $115M marked a post-IPO quarterly record, accelerating sequentially on a $1.46B base, with no signs of end-market demand softening.

Two structural shifts in the business mix warrant close monitoring: identity customer count more than doubled from ~400 to 900+ in a single quarter, with adoption running ahead of expectations and extending Rubrik’s buyer coverage from CIO data protection budgets into CISO security budgets; and Agent Cloud reached general availability and entered POC stage with Fortune 500 enterprises, with management indicating that FY27 guidance does not embed meaningful AI contribution—creating potential upside optionality should commercialization accelerate.

FY27 subscription ARR growth guidance of 25–26% narrows from FY26’s 34%, but the implied full-year net new ARR of ~$374M exceeds the ~$305M embedded in FY26’s initial guide—the deceleration is a base effect, not a reduction in absolute momentum. Given management’s track record of multiple beat-and-raise cycles since IPO, we are inclined to view this as habitual guidance conservatism rather than a leading indicator of fundamental deceleration.

This quarter confirms Rubrik’s evolution toward a multi-product platform spanning data, identity, and AI operations. That said, continued improvement in hyperscaler native backup capabilities and the early-stage ramp of newer product lines remain risks that require ongoing monitoring.

---

I. Executive Summary