YC Summer 2026 (S26) founder

Anish Mariathasan

Founder of Osseus, The secure research brain for accelerating R&D

Company

Anish Mariathasan is listed as a founder of Osseus. Osseus is the secure research brain for R&D teams. Today, research knowledge is fragmented across specialist tools, decisions, conversations, and people's heads. Osseus crafts this into a permissioned memory that grows with every experiment, decision, failure, and lesson learned. Rather than only retrieving the current state of connected tools, Osseus preserves how work evolved: what was tried, what failed, why decisions were made, and who holds the relevant context. Each person gets a personal AI agent that uses this growing history to proactively surface relevant evidence, help prevent duplicated work and repeated mistakes, and identify the exact expert who can unblock the next decision. By preserving both technical history and the organizational know-how behind team processes and decision making, Osseus helps R&D teams move faster before time and money are wasted.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. LinkedIn

    Joining Y Combinator this summer to build Osseus

    Super excited to be joining Y Combinator this summer to build Osseus (YC S26).

  2. LinkedIn

    We want to introduce Osseus (YC S26) to everyone!!

    We want to introduce Osseus (YC S26) to everyone!!