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ENR Ranks ISG Among 2026’s Top 500 Design Firms

Lynn Bruns, PE, LEED AP
,
Chief Executive Officer
May 22, 2026

ISG now ranks #230 on Engineering News-Record’s 2026 Top 500 Design Firms list, up from #245 in 2025. The annual ranking reflects sustained growth across ISG’s multidisciplinary services and expanding geographic footprint.

This continued progress among the nation’s largest design firms reinforces ISG’s commitment to making a difference and positions the firm for continued momentum.

View the full list of 2026 Top 500 Design Firms on ENR’s website.

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Lynn Bruns, PE, LEED AP
Chief Executive Officer
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