Prototek Holdings

ServiceContoocook, NH, USAFounded 1987· One of 2188 Service companies tracked by AMPulse

Digital manufacturing services provider specializing in rapid prototyping and production across CNC machining, sheet metal, and additive manufacturing.

CEO / Founder: Bill Bonadio
Team Size: 201-500
Stage: Active
Total Funding: $51.4M
Latest Round: Acquired
Key Investors: TruArc Partners (successor firm to Snow Phipps Group; current PE owner)

Technology & Products

Key Products

CNC machining; Precision sheet metal fabrication; Additive manufacturing / 3D printing services; Wire EDM; Waterjet cutting; Value-added assembly

Technological Advantage

Verified advantages include ISO 9001:2015, AS9100D, ITAR, NIST SP 800-171, and CMMC 2.0 Level 2 C3PAO certifications for defense/aerospace; business advantage lies in high-mix, low-volume production scale across a multi-site US footprint (NH, WI, CA, PA) plus digital quoting (Prototek IQ) with ITAR-capable CNC/sheet metal workflows.

Differentiation

Value Proposition

Reduces lead times for complex metal and polymer parts through integrated digital manufacturing services including CNC, sheet metal, and AM.

How They Differentiate

Offers a broader range of traditional manufacturing (sheet metal, CNC) integrated with AM compared to pure-play AM service bureaus.

Market & Competition

Target Customers

S&P 500 companies to startups

Industry Verticals

Aerospace and defense; Medical technology; Industrial; Electronics and robotics; Consumer products; Telecommunications

Competitors

Protolabs; Xometry; Fictiv

Growth & Milestones

Growth Metrics

About page states ±300 employees; national provider with HQ Contoocook NH and manufacturing locations listed as Allentown PA, Concord NH, Eau Claire WI, Madison WI, Sacramento CA (5 sites); revenue figure $27.5M not reconfirmed on official site.

Major Milestones

1987: Company founded; 2017: Acquired by CORE Industrial Partners; 2020: Acquired by Snow Phipps Group (now TruArc Partners); 2024: Strategic absorption of four business units (ProtoCAM, Sac EDM, Midwest Prototyping, Cal-X); 2026-03: John Sidorowicz named Chief Commercial Officer; 2026-04: Achieved CMMC 2.0 Level 2 C3PAO certification; expanded Prototek IQ for ITAR-compliant CNC and sheet metal.

Notable Customers

Trek Bicycle; Saris; Sub-Zero

https://prototek.com

Official records

Filings, certifications, and programme counts AMPulse can show for this company.

[C] AS9100 · claimed
[C] ISO_9001 · claimed
[C] ITAR · claimed

Funding rounds

AcquisitionUndisclosed2020-10
AcquisitionUndisclosed2017

Why this company matters

AMPulse analysis, not a company disclosure

Prototek Holdings occupies a distinct position in the digital manufacturing services landscape by integrating CNC machining, precision sheet metal fabrication, and additive manufacturing into a single high-mix, low-volume production platform. Unlike pure-play AM service bureaus, Prototek offers customers a multi-modal manufacturing capability that reduces lead times for complex metal and polymer parts by eliminating the need to coordinate across separate suppliers.

The company's core technology stack spans metal and polymer AM alongside traditional processes including wire EDM, waterjet cutting, and value-added assembly. Prototek leverages proprietary QuickCast technology for investment casting patterns, acquired through its ProtoCAM business unit, to serve foundry and aerospace customers. The company holds AS9100D and ITAR certifications, enabling it to serve defense and aerospace primes directly.

Prototek serves a broad customer base ranging from S&P 500 companies to startups, with named clients including Trek Bicycle, Saris, and Sub-Zero. Key verticals include aerospace and defense, medical technology, industrial equipment, electronics and robotics, consumer products, and telecommunications. The company's national footprint spans four US facilities, a result of strategic acquisitions including ProtoCAM, Sac EDM, Midwest Prototyping, and Cal-X in 2024.

Competing against Protolabs, Xometry, and Fictiv, Prototek differentiates through its broader integration of traditional sheet metal and CNC capabilities with AM, rather than offering AM as a standalone service. The company is backed by Snow Phipps Group and TruArc Partners, with $51.4 million in total funding and approximately 300 employees. An open question is whether the multi-modal model can scale profitably against increasingly automated, platform-driven competitors in the on-demand manufacturing space.