Every fact below carries a source link and an as-of date. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- Chicago, IllinoisSource: primeraeng.com/contact · As of 2026-10-06
- Founded
- 1987Source: primeraeng.com/about-us/history · As of 2026-10-06
- Ownership type
- Employee-owned (ESOP) and certified women-owned business enterprise (WBE): DOL Form 5500 lists Primera Engineers ESOP Plan (NAICS 541330); firm About pages state WBE; history page states co-founders sold the firm in March 2016 to Erin InmanSource: primeraeng.com/about-us · As of 2026-10-06
- Sponsor or parent
- DOL Form 5500 evidences the ESOP (ACK_ID 20251008072339NAL0002827267001, 313 active participants). History: March 2016 sale to Erin InmanSource: primeraeng.com/about-us/history · As of 2026-10-06
- Employees
- Nearly 400 employees spread across 25 states; About page also states more than 350 talented professionalsSource: primeraeng.com/contact · As of 2026-10-06
- Website
- primeraeng.comSource: primeraeng.com/about-us · As of 2026-10-06
Legal name, DBA and former names
- Primera Engineers, Ltd. (Primera)Source: primeraeng.com/about-us · As of 2026-10-06
Identifiers (UEI, state registrations)
- Texas TBPELS firm no. 15646, 20286.Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04
Ownership type
- Employee-owned (ESOP) and certified women-owned business enterprise (WBE): DOL Form 5500 lists Primera Engineers ESOP Plan (NAICS 541330); firm About pages state WBE; history page states co-founders sold the firm in March 2016 to Erin Inman.Source: primeraeng.com/about-us · As of 2026-10-06
Sponsor, parent or transaction
- DOL Form 5500 evidences the ESOP (ACK_ID 20251008072339NAL0002827267001, 313 active participants). History: March 2016 sale to Erin Inman.Source: primeraeng.com/about-us/history · As of 2026-10-06
- DOL ESOP filing.Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-10-08
Employee count or band
- Nearly 400 employees spread across 25 states; About page also states more than 350 talented professionals.Source: primeraeng.com/contact · As of 2026-10-06
Services and markets
- Buildings, transportation and utilities engineering design and consulting including MEP, structural, civil and telecommunications.Source: primeraeng.com · As of 2026-10-06
Leaders
- Erin Inman named on firm history page as purchaser in March 2016.Source: primeraeng.com/about-us/history · As of 2026-10-06
Deals
- March 2016: co-founders sold the firm to Erin Inman (then Utilities Division Manager)Source: primeraeng.com/about-us/history · As of 2026-10-06
Licences (board records)
- Texas TBPELS roster lists Primera Design Associates, LLC (firm no. 15646, type NS, expires 2026-11-30); Primera Engineers, Ltd. (firm no. 20286, type NS, expires 2026-11-30)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04
DOT prequalification
- TxDOT Active Precertified Firms lists PRIMERA ENGINEERS, LTD. with 24 areas of certification, renewal status MARCH 24, 2023 ( ACTIVE )Source: dot.state.tx.us/des/precert/precrt10.htm · As of 2026-10-05
ESOP plan data (Form 5500)
- DOL Form 5500 plan year beginning 2024-01-01: PRIMERA ENGINEERS ESOP PLAN (ACK_ID 20251008072339NAL0002827267001), 313 active participants and total plan assets of $2,974,144 at year end.Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-10-08
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: PRIMERA ENGINEERS ESOP PLAN (ACK_ID 20251008072339NAL0002827267001, 313 active participants); PRIMERA ENGINEERS 401K PLAN (ACK_ID 20251009123717NAL0011465872001, 326 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-10-08
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
- 2026-10-02 firm news teaser: Erin Inman Honored with March of Dimes Professional Services Award.Source: primeraeng.com · As of 2026-10-06
Sources of record
- https://primeraeng.com/about-us/
- https://tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
- https://primeraeng.com/contact/
- https://primeraeng.com/about-us/history/
- https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
- https://primeraeng.com/
- https://www.dot.state.tx.us/des/precert/precrt10.htm
- https://www.enr.com/toplists/2026-top-500-design-firms-4
Ownership tag: Employee-owned (ESOP). Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
