Overview

Zygo is a Middlefield, Connecticut company founded in 1970 that designs and manufactures optical metrology systems and precision optical components. It employs roughly 500 to 1,000 people and has been a subsidiary of AMETEK since 2014. Its customers span semiconductor, defense and aerospace, medical, automotive, and scientific research sectors. Its Somerset West, South Africa-based customer Simera Sense expanded production in 2026 with new Zygo laser interferometers.

At a glance

What Zygo makes

The company holds ISO 9001 and ISO 13485 certifications and is ITAR registered, and it lists machining, assembly, and electronics among its manufacturing capabilities.

Products and capabilities described on the company's own site include Machining, Semiconductor, Electronics, Assembly (source: zygo.com).

Certifications

Zygo is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:

• ISO 13485 — azooptics.com

• ISO 9001 — zygo.com

• ITAR registered — azooptics.com

Trade and customs footprint

Zygo's public records show recent news items dated October 2025 through October 2026, including a purchase reported in October 2026 and a supplier award nomination from ASML in October 2025. US customs bill-of-lading records list 63 inbound shipments across 15 foreign suppliers, with top origins including Mexico · Belgium · Greece · Spain.

Latest developments

• 2026-10-27 — Zygo Purchase | CLEATUS (cleat.ai)

• 2026-08-04 — We're proud to see Simera Sense expanding its production capabilities with new Zygo Laser interferometers at its Somerset West facility | Zygo (linkedin.com)

• 2026-07-21 — ZYGO 3 Year Service Contact (sweetspotgov.com)

• 2025-10-28 — Zygo™ Nominated for the ASML Supplier Day Award in the Quality Category (zygo.com)

• 2025-10-28 — News Releases (zygo.com)

• 2025-09-09 — Zygo to highlight advanced metrology solutions at w3+ fair 2025 (zygo.com)

Facilities

Zygo is headquartered in Middlefield, Connecticut. Public sources also reference these locations:

• Middlefield, Connecticut — zygo.com

Company details

Zygo is a subsidiary of AMETEK, Inc. and trades as a public company under the ticker ZIGO, with annual revenue reported in the $122.2 million band. Zygo was founded in 1970, has an estimated 500-1,000 employees, and is headquartered in Middlefield, Connecticut. On the LightSource stability read it is rated "Established & strong": 56 years in operation (founded 1970). Publicly listed; no distress event on record. Holds ISO 13485, ISO 9001, ITAR registered certification(s) per public sources.

Frequently asked questions

What does Zygo make?

Zygo is a Middlefield, Connecticut company founded in 1970 that designs and manufactures optical metrology systems and precision optical components. It employs roughly 500 to 1,000 people and has been a subsidiary of AMETEK since 2014. Its customers span semiconductor, defense and aerospace, medical, automotive, and scientific research sectors. Its Somerset West, South Africa-based customer Simera Sense expanded production in 2026 with new Zygo laser interferometers.

Where is Zygo headquartered?

Zygo is headquartered in Middlefield, Connecticut (Laurel Brook Road, Middlefield, Connecticut, 06455).

When was Zygo founded?

Zygo was founded in 1970.

How big is Zygo?

Zygo has an estimated 500-1,000 employees, with revenue in the 122.2M range.

Is Zygo publicly traded?

Publicly traded (NASDAQ: ZIGO). Public financial figures are drawn from its filings.

What certifications does Zygo hold?

Zygo lists ISO 13485 · ISO 9001 · ITAR registered on its website. Confirm the certified scope for the specific plant producing your part.

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Last verified Nov 2026. Is this your company? Request a correction.