Every fact below links to its source. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- ConnecticutSource: fando.com/about
- Ownership type
- Private equity backed: Trilon history states Fuss & O'Neill joined in December 2023; Trilon is backed by Alpine InvestorsSource: trilon.com
- Sponsor or parent
- Trilon.com history: Fuss & O'Neill joining in December 2023Source: trilon.com
- Website
- fando.comSource: fando.com/about
Legal name, DBA and former names
- Fuss & O'Neill, Inc.Source: fando.com/about
Identifiers (UEI, state registrations)
- SAM UEI LE5DAR1LLZK9 (as shown on the USAspending recipient record)Source: usaspending.gov/recipient/7a790cd7-a785-9a85-15…
Ownership type
- Private equity backed: Trilon history states Fuss & O'Neill joined in December 2023; Trilon is backed by Alpine Investors.Source: trilon.com
Sponsor, parent or transaction
- Trilon.com history: Fuss & O'Neill joining in December 2023.Source: trilon.com
Services and markets
- Engineering consulting including transportation, water, resilience and related infrastructure.Source: fando.com/about
Leaders
- Patrick Herold, Vice President of Operations.Source: fando.com/about/people
- Aimee Couture, Vice President, Director of Marketing.Source: fando.com/about/people
Deals
- December 2023: joined Trilon Group.Source: trilon.com
Federal awards (contracts)
- USAspending recipient record FUSS & O'NEILL, INC (Hartford, CT), contract award obligations: FY2021 $5,897, FY2022 $0, FY2023 $0, FY2024 $23,794, FY2025 $0 (award types A to D; obligations as published, including modifications and negative adjustments)Source: usaspending.gov/recipient/7a790cd7-a785-9a85-15…
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: FUSS & O'NEILL PROFIT SHARING & EMPLOYEE SAVINGS PLAN (ACK_ID 20250918150512NAL0001544561001, 0 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac…
Rankings and awards
- Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi…
Sources of record
- https://fando.com/about/
- https://www.usaspending.gov/recipient/7a790cd7-a785-9a85-1568-19b243223689-P/latest
- https://www.trilon.com/
- https://www.fando.com/about/people/
- https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
- https://www.enr.com/toplists/2026-top-500-design-firms-3
Ownership tag: Private equity backed. Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
