Siwash Rock Investments makes 'foundational investment' in Stack Modular

What's the deal? Vancouver-based Siwash Rock InvestmentsDealroom has a profile for this one. Try Dealroom → has completed a "foundational investment" in Stack Modular, a design-build firm that manufactures steel-frame modular buildings in Shanghai for delivery across North America. The deal marks Siwash Rock's fourth private market transaction in the past two years; no dollar figure was disclosed. Siwash Rock chief executive Ted Reid said the move continues the firm's mandate to support the next generation of entrepreneurs with growth capital, and called Stack "an inflection point" after 15 years of operation, citing nine-figure historical sales and continued investment in processes, systems, and people.

Why it matters. Stack Modular, founded in 2009 by engineer and architect Jim Dunn, designs and manufactures customised steel-frame modules capable of being stacked up to 40 storeys high — serving residential, hospitality, commercial, institutional, and resource sectors. It operates three CSA-certified fabrication facilities in Shanghai totalling over 750,000 square feet, and runs a turnkey partnership with Bird ConstructionDealroom has a profile for this one. Try Dealroom → for on-site installation. Modular construction remains a niche segment where firms continue to struggle to scale: Dealroom tracks US-based competitor FullStack ModularDealroom has a profile for this one. Try Dealroom → at the early-growth stage, underscoring how nascent the broader industry remains.

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