Calyxo

Calyxo, Inc. is a medical device company based in Pleasanton, California, founded in February 2016. The company focuses on enhancing the treatment and care for patients with kidney stones, operating within the urology sector. Calyxo aims to transform kidney stone treatment by providing innovative solutions that help urologists achieve safe and effective clinical outcomes. The company's main product is the CVAC System, recognized as the world's first all-in-one kidney stone treatment system. This technology addresses the healthcare resources and costs associated with kidney stone disease, which affects many individuals. Calyxo's mission is to deliver solutions that allow for efficient, one-time treatments, ensuring peace of mind for both patients and healthcare providers. Calyxo has raised a total of $97.61 million in funding, with its most recent round bringing in $50 million. The leadership team comprises experienced professionals in medical device development and healthcare, committed to improving patient outcomes in the kidney stone treatment landscape.

Medical Devices Pleasanton, United States Founded 2016 ~183 employees Private · Series D

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Employees
183
+9.6% in the 3 months to Jun 2025
Revenue / employee
$18.6K
Revenue ~$3.4M
Total funding
$119M
Last round Series D, Oct 2023
12-month attrition
7.9%
Tech: 34.4%
H1B filings, FY2026
2
Sponsors visas
Open jobs
15
Last 30 days

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering3

The department split adds up all the years listed above. FY2026 alone: 2 filings.

Funding

  • Oct 2023 · Series D · $50M · Questa Capital, CRG
  • Jul 2022 · Series C · $32.7M · Questa Capital, CRG
  • Jan 2022 · $22.7M
  • Oct 2019 · $12.9M
  • Apr 2019 · Debt Financing · $450K

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Calyxo FAQ

How many employees does Calyxo have?

Calyxo has about 183 employees, up 9.6% over the 3 months to Jun 2025.

Does Calyxo sponsor H1B visas?

Yes. Calyxo filed 2 H1B (LCA) applications in FY2026, according to the latest U.S. Department of Labor disclosures. Most of them were for Engineering roles.

What is Calyxo's revenue per employee?

Calyxo makes about $19K in revenue per employee, based on $3.4M annual revenue and 183 employees.

How much funding has Calyxo raised?

Calyxo has raised $118.71M in total funding; its latest round was Series D in Oct 2023.

Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.