---
title: "MidOcean Partners agrees to sell SI Solutions to Macquarie group"
url: https://burnaze.com/article/368f47db-214e-47e4-a0a8-de65fe1aa6c3
source: "PE Hub"
original_url: https://www.pehub.com/midocean-partners-agrees-to-sell-si-solutions-to-macquarie-group/
category: "Finance"
topics: ["Finance & M&A"]
published: 2026-09-10T19:49:49.000Z
modified: 2026-10-31T12:09:03.087Z
image: https://images.unsplash.com/photo-1551288049-bebda4e38f71?w=1600&q=80&auto=format&fit=crop
---

# MidOcean Partners agrees to sell SI Solutions to Macquarie group

**TL;DR:** Macquarie Asset Management has agreed to acquire a majority stake in SI Solutions from MidOcean Partners for undisclosed terms. The deal is expected to close in fall 2026.

*originally published in PE Hub on 2026-09-10. [Read the original](https://www.pehub.com/midocean-partners-agrees-to-sell-si-solutions-to-macquarie-group/).*

## Story

- SI supports more than 330 clients across nuclear, gas power, pipeline, petrochemical, civil and industrial sectors
- UniSuper, one of Australia’s largest superannuation funds, is co-investing alongside Macquarie Asset Management in the transaction
- The deal is expected to close in fall 2026

Macquarie Asset Management, along with co-investors including UniSuper, has agreed to acquire a majority stake in SI Solutions from MidOcean Partners for undisclosed terms.

The investment follows a Macquarie strategy targeting high-quality, stable businesses that provide critical services, products and technologies to infrastructure end markets.

Headquartered in Huntersville, North Carolina, the company operates from 16 locations, five of which include testing laboratories, and currently supports more than 330 clients.

SI’s engineers and technicians evaluate remaining useful life through stress, fatigue and materials analysis, diagnose the root cause of equipment and system performance issues, and apply that expertise across the full asset lifecycle. These services are backed by non-destructive evaluation, laboratory testing, failure analysis and asset management software. The platform was built by integrating specialist firms with long-established technical track records.

> “SI is a highly regarded industry leader with a strong track record of serving many of the largest utilities, who seek out SI for their most challenging structural integrity problems,” said Andrew Olinick, senior managing director at Macquarie Asset Management. “SI’s specialization in the power generation markets is a strong fit for our strategy.”

Macquarie Asset Management manages US$498 billion in assets and is part of Macquarie Group, which was founded in 1969.

## Entities

- private equity (topic)
- Finance (sector)
- PE Hub (publication)
- MidOcean Partners (investor)
- asset management (topic)
- majority stake acquisition (topic)
- Macquarie Asset Management (investor)
- SI Solutions (company)
- UniSuper (investor)
- Macquarie Group (company)
- Andrew Olinick (person)
- Macquarie Asset Management acquisition of SI Solutions (deal)

---
Originally reported by PE Hub (https://www.pehub.com/midocean-partners-agrees-to-sell-si-solutions-to-macquarie-group/). Summarized by Burnaze (https://burnaze.com/article/368f47db-214e-47e4-a0a8-de65fe1aa6c3).