Siemens Digital Industries Software Acquires ZONA Technology, Inc.

ZenaTech Acquires ESM Software

August 25, 2026

Software

ZenaTech has completed the acquisition of ESM Software, a Boston-based strategy execution and performance management company. The deal adds ESM’s strategy/OKR and cybersecurity compliance capabilities to ZenaTech’s enterprise SaaS division and is expected to be integrated into ZenaTech’s beta-stage Zoo Office platform.

SimuTech Group Acquires Ozen Engineering (Merger)

September 19, 2025

Engineering Services

SimuTech Group and Silicon Valley-based Ozen Engineering announced a merger that will unite their Ansys channel partner businesses under the SimuTech Group name. The combination expands SimuTech's North American footprint and technical capability in engineering simulation, consulting, training, and support.

Siemens Industry Software Acquires Altair Engineering

March 26, 2025

AI & Machine Learning

Siemens has signed an agreement to acquire Altair Engineering Inc. for $113 per share in cash, valuing the deal at about USD 10 billion. The transaction will combine Altair’s simulation, HPC, data science and AI capabilities with Siemens Xcelerator to create a more comprehensive AI-powered industrial software and digital twin portfolio.

Ansys Acquires Zemax

August 30, 2021

Software

Ansys announced a definitive agreement to acquire Zemax, a leader in optical imaging and photonics simulation software, from EQT Private Equity. The acquisition expands Ansys' optics and photonics simulation capabilities by adding Zemax's OpticStudio and related technologies; the deal was expected to close in Q4 2021 pending customary approvals.

Siemens Digital Industries Software Acquires Fractal Technologies

May 12, 2021

Software

Siemens Digital Industries Software acquired Fractal Technologies in May 2021 to add production signoff–quality IP validation capabilities to its Xcelerator portfolio and Solido product family. The acquisition expands Siemens' EDA IC verification offerings by integrating Fractal's IP validation technology to improve design quality and accelerate time-to-market for semiconductor customers.

ZephyrTel Acquires Vasona Networks

September 26, 2018

Telecommunications

ZephyrTel, an ESW Capital software company focused on telecommunications solutions, has acquired Vasona Networks, a provider of mobile edge and network performance software for mobile operators. The deal strengthens ZephyrTel’s telco software portfolio and capabilities in mobile edge computing as part of its rapid build-out of a global telecommunications software group.