Dynatrace completes $915M Arize acquisition

Dynatrace said on October 1, 2026 that it has completed its acquisition of Arize, sealing a previously announced cash-and-stock deal valued at $915 million under August agreement terms that included about $815 million in cash plus replacement equity awards.

Dynatrace closed its purchase of Arize on October 1, 2026 — a sealed Completes announcement, not another pending-deal update.

Completes on October 1

Dynatrace (NYSE: DT) said on October 1, 2026 that it has completed its acquisition of Arize, an AI observability and evaluation platform focused on continual learning for agents. The Dynatrace investor-relations Completes release, timed 4:05 PM ET and carried on Business Wire (release id 20261001218006), is the sealed close for a transaction Dynatrace announced by definitive agreement in August.

The Completes release frames the combination as bringing evaluation and observability together so teams can test AI applications before launch and keep them dependable once they are live. It says Arize will continue supporting both Phoenix, its open-source platform, and AX, its enterprise platform, and that over time Arize capabilities will be integrated into Dynatrace for a unified AI observability experience.

What the August agreement set as consideration

The Completes release confirms closing. It does not restate purchase-price dollars. Those terms sit in Dynatrace's August 13, 2026 definitive-agreement announcement: a cash and stock transaction valued at $915 million, subject to customary adjustments, consisting of approximately $815 million in cash as well as replacement equity awards for Arize employees joining Dynatrace. Dynatrace said then that it planned to fund the transaction through cash on hand and/or its existing credit facility.

Readers should keep the layers straight: October 1 Completes seals consummation; the $915 million / approximately $815 million cash split is the announced agreement economics from August 13, not a fresh Completes re-pricing.

Product and integration framing

In the Completes release, Dynatrace presents Arize as an AI observability and evaluation platform delivering continual learning for agents, and says the combination is expected to surface issues earlier and resolve them faster by giving developers and AI builders visibility into model and agent behavior from development through production alongside Dynatrace's existing performance, cost, and reliability tooling. Those are company and quoted third-party framing points in the Completes text — not independent integration audits.

Why the close matters

A Completes release on October 1 turns the previously announced Arize acquisition into a sealed close for a large public-issuer AI-observability deal whose announced consideration was $915 million in cash and stock.

Sources & evidence

- Dynatrace Completes Acquisition of Arize, Extending AI Observability Across the Full Development Lifecycle (Dynatrace IR / Business Wire; Oct 1, 2026 4:05 PM ET; BW id 20261001218006) — https://ir.dynatrace.com/news-events/press-releases/detail/439/dynatrace-completes-acquisition-of-arize-extending-ai-observability-across-the-full-development-lifecycle - Dynatrace to Acquire AI Observability Leader Arize (Dynatrace IR / Business Wire; Aug 13, 2026) — consideration terms ($915 million; approximately $815 million cash + replacement equity awards) — https://ir.dynatrace.com/news-events/press-releases/detail/435/dynatrace-to-acquire-ai-observability-leader-arize