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Naprotek
Naprotek is a privately held manufacturer of complex electronic assemblies, headquartered in San Jose, California.
Naprotek
Naprotek is a privately held manufacturer of complex electronic assemblies, headquartered in San Jose, California. The firm's leadership includes Tim Filteau, James Eisenhaure, Anil Kumar, Fida Mustafa, and Freddie Chavez, though no founding year or wealth origin is publicly disclosed. The company focuses on high-mix, low-to-mid volume production for regulated industries. Strategy centers on quick-turn prototype and batch manufacturing of printed circuit board assemblies, RF/microwave assemblies, and semiconductor-related products. The firm holds ISO 9001, AS9100, ISO 13485, and ITAR compliance certifications, enabling work across defense, aerospace, medical diagnostics, and analytical instrumentation. Confirmed clients include BAE Systems, for whom subsidiary SemiGen won a Partner 2 Win Silver Tier Award in March 2026 (per BAE Systems, 2026). Other customer references mention work on vehicle simulators, probe cards, and power electronics. Geographically, operations span three facilities: two in San Jose for PCBA and one in Londonderry, New Hampshire for RF assembly under the SemiGen brand. Naprotek does not disclose headcount, total deployment, or revenue. The company has grown through at least one acquisition: SemiGen, now its RF/microwave division. A recent operational event: in March 2026, SemiGen received a Silver Tier Award from BAE Systems' Partner 2 Win supplier program (per BAE Systems, 2026). The firm also appointed QuantumFlow Manufacturing Representatives for Southern California and Nevada in February 2026, and exhibited at the 2026 IEEE MTT-S International Microwave Symposium in Boston. What distinguishes Naprotek from generic EMS providers is its vertically integrated cell-based manufacturing model purpose-built for high-mix, rapid-turn, and high-reliability work. Rather than optimizing for massive volumes, the firm maintains separate centers of excellence for each capability — prototype, production, RF, and test — enabling it to serve space-rated and FDA-regulated programs that demand full traceability and MIL-STD compliance. Succession and ownership structure remain undisclosed.
General information
Firm type
Asset Manager
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
San Jose
Corporate office
San Jose, CA, United States
Additional offices
Londonderry, NH, United States
Principals
Tim Filteau
President / CEO (implied by leadership page)
James Eisenhaure
Leadership
Anil Kumar
Leadership
Fida Mustafa
Leadership
Freddie Chavez
Leadership
Sector focus
Frequently asked questions
Who runs investment decisions at Naprotek?
Naprotek is led by Tim Filteau, with James Eisenhaure, Anil Kumar, Fida Mustafa, and Freddie Chavez listed on the leadership page. No single CIO or investment committee is publicly identified, and the firm does not disclose ownership structure (per firm website).
Is Naprotek a single family office or an operating company?
Naprotek presents itself as an operating electronics manufacturer, not a family office. The firm's website describes it as an electronics technology solutions provider, and its activities are focused on contract manufacturing of PCBAs and RF assemblies. Ownership is not disclosed.
What certifications does Naprotek hold?
Naprotek holds ISO 9001, AS9100, ISO 13485, and ITAR compliance, qualifying it for defense, aerospace, and medical device production (per firm website). SemiGen, its RF division, operates a MIL-STD compliant testing lab.
Does Naprotek make capital commitments or deploy investment capital?
Naprotek does not present itself as an investment firm. It is a contract electronics manufacturer that builds products for customers in defense, aerospace, medical, and semiconductor test. There is no public record of fund commitments, direct equity deals, or LP relationships.
Which sectors does Naprotek serve?
Naprotek's website and case studies reference space-rated satellite systems, FDA-regulated medical diagnostic equipment, defense electronics, semiconductor ATE and RF test, analytical instruments, and advanced probe card manufacturing.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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