WSB

Legal name, DBA and former names

• WSB & Associates, Inc. (Form 5500 sponsor name), operating as WSB; Texas roster lists WSB LLC.Source: newswire.com/news/ghk-capital-partners-lp-co… · As of 2023-09-20

Identifiers (UEI, state registrations)

• Texas TBPELS firm no. 16849.Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04

Offices

• 36 offices nationwide as of the September 2023 announcement (17 offices across five states before the EST acquisition)Source: wsbeng.com/wsb-minneapolis-based-design-an… · As of 2023-09-20

Ownership type

• PE-backed: GHK Capital Partners LP completed a majority recapitalization of WSB in August 2023, per the firm's announcement.Source: wsbeng.com/wsb-minneapolis-based-design-an… · As of 2023-09-20

Sponsor, parent or transaction

• GHK Capital Partners LP (Greenwich, Connecticut) announced on 2023-09-20 that it completed the acquisition of WSB & Associates, Inc. and EST Inc., then contributed EST into WSB under the WSB banner.Source: newswire.com/news/ghk-capital-partners-lp-co… · As of 2023-09-20

Employee count or band

• More than 1,100 employees and 36 offices nationwide after the 2023 EST combination, per the firm's announcement.Source: wsbeng.com/wsb-minneapolis-based-design-an… · As of 2023-09-20

Services and markets

• Infrastructure engineering consulting for transportation, environmental, utility, renewable energy and other critical infrastructure markets; WSB also lists construction engineering and inspection, municipal infrastructure and digital construction work.Source: newswire.com/news/ghk-capital-partners-lp-co… · As of 2023-09-20

Leaders

• Bret Weiss, PE, President and Chief Executive Officer.Source: wsbeng.com/leadership · As of 2026-10-05
• Jon Chiglo, PE, Chief Operating Officer.Source: wsbeng.com/leadership · As of 2026-10-05
• James Bainbridge, Chief Financial Officer.Source: wsbeng.com/leadership · As of 2026-10-05
• Mike Vahabzadegan, Executive Vice President, Strategy.Source: wsbeng.com/leadership · As of 2026-10-05

Deals

• 2023-08: GHK Capital Partners majority recapitalization of WSB; 2023-09-20: EST Inc. (Oklahoma City) acquired and combined into WSB, described by the firm as its third acquisition in the southwest.Source: wsbeng.com/wsb-minneapolis-based-design-an… · As of 2023-09-20
• 2019-09: acquired Houston-based Nathelyne A. Kennedy & Associates, Inc.; 2018: acquired Rogers Design Services.Source: wsbeng.com/wsb-minneapolis-based-design-an… · As of 2023-09-20

Licences (board records)

• Texas TBPELS roster lists WSB LLC (firm no. 16849, type NS, expires 2028-07-31)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04

DOT prequalification

• TxDOT Active Precertified Firms lists WSB LLC with 109 areas of certification, renewal status JANUARY 5, 2024 ( ACTIVE )Source: dot.state.tx.us/des/precert/precrt14.htm · As of 2026-10-05

Public filings

• DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: WSB & ASSOCIATES, INC. 401(K) NEW COMPARABILITY PLAN AND TRUST (ACK_ID 20251013145024NAL0003343554001, 1,329 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-10-13

Rankings and awards

• Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi… · As of 2026-10-05

News timeline

• 2023-09-20: GHK Capital Partners completes the combination of WSB and EST.Source: newswire.com/news/ghk-capital-partners-lp-co… · As of 2023-09-20

Sources of record

1. https://www.newswire.com/news/ghk-capital-partners-lp-completes-the-combination-of-wsb-associates-22131814
2. https://tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
3. https://www.wsbeng.com/wsb-minneapolis-based-design-and-consulting-firm-announces-acquisition-of-est/
4. https://www.wsbeng.com/
5. https://www.wsbeng.com/leadership/
6. https://www.dot.state.tx.us/des/precert/precrt14.htm
7. https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
8. https://www.enr.com/toplists/2026-top-500-design-firms-2