Sierra's latest publicly disclosed primary financing record is a $950M Series E dated May 4, 2026 at a reported valuation of $15.8B. The event is shown on the company page using the event date—not the date Captables published this historical profile.
Tiger Global, GV, Tiger Global Management are identified as lead investors. Other named participants include Benchmark, Sequoia Capital, Greenoaks Capital, Greenoaks Capital Partners.
The preceding primary records in the ledger are $350M Series C dated September 4, 2025; $175M Series B dated October 28, 2024; $110M Seed dated February 13, 2024. These entries describe disclosed company financings; they do not include every secondary trade, employee tender, valuation mark or rumored transaction unless those events are separately labeled in the company ledger.
Sierra is ranked number 35 in the Captables Private 100 source universe. It operates in AI Customer Service and is based in United States. Its $10.0B ranking value is a third-party snapshot and should not be treated as a current executable share price or as the valuation for this round.
The round is currently supported by a public financing-database entry rather than an issuer filing, so Captables labels it as database-listed evidence. This page is a public-source reconstruction, not the issuer's stock ledger or legal capitalization table; undisclosed terms remain undisclosed and readers can submit stronger evidence for editorial review.