Every fact below carries a source link and an as-of date. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- Herndon, Va., as listed by ENR in the 2026 Top 500 Design FirmsSource: enr.com/toplists/2026-top-500-design-fi… · As of 2026-10-05
- Ownership type
- Ownership not published
Legal name, DBA and former names
- ATCS (name as shown on the firm's website)Source: atcs.com · As of 2026-10-11
Offices
- ATCS has offices in Virginia, Maryland, Pennsylvania, North Carolina, and South Carolina.Source: atcs.com/about/locations · As of 2026-10-11
Services and markets
- ATCS provides services in air and noise abatement, aviation, bridges and structures, buildings and facilities, construction management and inspection, emergency management, environmental planning, land survey and geomatics, multimodal transportation, program management and project controls, public involvement, site civil, traffic engineering and transportation planning, transit and rail, transportation design, and water resources.Source: atcs.com · As of 2026-10-11
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: ATCS, P.L.C. 401(K) PLAN (ACK_ID 20251007092314NAL0004553217001, 292 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-10-07
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
- 2026-07-08: Josh Wilson joined the ATCS ownership group.Source: atcs.com · As of 2026-10-11
Sources of record
Ownership tag: Ownership not published. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
