Temporal funding, valuation and investors

Overview

Temporal provides durable execution primitives for distributed workflows — handling retries, partial failures, and state across long-running processes. The Seattle company, founded in 2019 by Samar Abbas and Maxim Fateev, announced a $550 million Series E at $12.55 billion on September 14, 2026. The company said Lightspeed co-led with Wellington Management, Growth Equity at Goldman Sachs Alternatives, and Tiger Global, with T. Rowe Price and SV Angel participating and a16z, Sequoia, Index, GIC, Sapphire Ventures, and Amplify returning. Reuters matched $12.55 billion and rounded its headline to $12.6 billion. Prior company mark: $300 million Series D at $5 billion post-money on February 17, 2026, led by Andreessen Horowitz. Series E metrics are company-claimed: annualized revenue run rate up more than 200% year over year; net dollar retention above 200% since February; more than 4,300 paying customers (+139% YoY); 1.9 trillion billable actions in August (+350% YoY); 43 million open-source installs; 570 employees. Named customers include OpenAI, Snap, NVIDIA, and JPMorgan Chase. ARR dollars, primary vs secondary, cheque sizes, and pre- vs post-money on the Series E were not disclosed. Wellington, Goldman, GIC, Sapphire, Amplify, T. Rowe, and SV Angel do not have Venture Capital Tracker /fund/ pages. Rillet named Temporal as a customer in its August 17, 2026 Series C post.

Why Temporal is interesting

September 14, 2026 company close: $550 million Series E at $12.55 billion — 2.5× the February 17, 2026 $5 billion post-money Series D in seven months. August 18 Bloomberg talks (~$500M at ≥$12B pre-money) are superseded. The Series E post printed usage and growth rates, not ARR dollars. Reuters $12.6 billion is rounding.

Product & use cases

Open-source durable execution engine and cloud platform for fault-tolerant workflows — used for payments, data pipelines, and increasingly AI agent orchestration.

• Reliable AI agent and tool-chain orchestration
• Payment and fintech workflow durability
• ETL and data pipeline fault tolerance

Key facts

• Sep 14, 2026: $550M Series E at $12.55B; Lightspeed co-led with Wellington, GS Alternatives, Tiger (company / Reuters)
• ARR dollars not disclosed; run-rate +200% YoY and NDR >200% since February are company growth claims
• Feb 17, 2026: $300M Series D at $5B post-money, a16z led
• August 18 Bloomberg ~$500M / ≥$12B pre-money talks are superseded
• Reuters headline $12.6B is rounding of $12.55B

Funding history (newest first)

Competitive landscape

Edge: OSS adoption plus a $12.55 billion Series E on usage and NDR — the diligence gap is the missing ARR dollar, not whether enterprises run Temporal.

Workflow orchestration competes with cloud-native tools and newer durable-function startups. Temporal wins on OSS adoption and reliability primitives; cloud vendors bundle competing services.

• AWS Step Functions incumbent

  Cloud-native workflow orchestration; single-vendor.

• Inngest direct

  Durable functions platform; newer entrant.

• Airflow adjacent

  Batch orchestration; less transactional durability.

Notable stories

• August $12B talks closed at $12.55B without an ARR dollar.
• Agent runs as distributed workflows elevate Temporal's strategic position.

Market / IPO context

Related funding articles

Venture Capital Tracker pieces that cover Temporal's financing or category context.

• Temporal’s $550M Series E Is $12.55B — ARR Dollars Still Missing
• September 14–15 Investment News: Temporal $12.55B, Cornelis $205M
• Temporal's $300M Series D: Durable Execution Is the Unsexy AI Infrastructure Winner
• What Is Rillet’s Valuation in 2026? $1B After $100M Series C
• August 2026 VC News: What Closed Through the 31st?
• September 2026 VC News: Tabby $6.5B, May $1.4B SPAC, Manus $4B Talks