Topsort

Topsort is a retail media infrastructure company founded in 2021 and based in Menlo Park, California, with additional offices in Boston, São Paulo, and Santiago. The company focuses on making auction-based advertising and AI-driven monetization tools accessible to e-commerce businesses worldwide. Topsort emphasizes privacy-friendly solutions and carbon-neutral operations, aiming to empower retailers, marketplaces, and brands to effectively monetize through transparent tools. Their main offerings include a media monetization platform that allows retailers to manage retail media networks with optimized bidding and targeting, as well as APIs and tools for ad format creation and campaign management. Topsort's privacy-first framework utilizes product data for ad targeting, aligning with cookie-less advertising trends. The company serves omni-channel retailers and delivery apps in over 40 countries, helping them maximize return on ad spend. Co-founded by Regina Ye, Francisco Larrain, and Michael Ostrovsky, Topsort combines expertise in data science and engineering to drive innovation in ad performance.

Information Technology & Services San Francisco, United States Founded 2021 ~101 employees Private · Series A

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Employees
101
+14.8% in the 3 months to Jun 2025
Revenue / employee
$36.6K
Revenue ~$3.7M
Total funding
$42.8M
Last round Series A, Feb 2024
12-month attrition
23.9%
Tech: 8%
H1B filings, FY2026
1
Sponsors visas
Open jobs
1
Last 30 days

Headcount trend

Topsort went from 36 employees in Jul 2023 to 101 in Jun 2025. Jan to Jun 2025: 39 people joined, 8 left.

Headcount data through Jun 2025

Org structure

Headcount by department

Engineering42
Other19
Sales8
Marketing8
HR7
Operations5
Product5
Success3

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Salaries at Topsort

All salaries

4 salary profiles in the US

Pay by level, gender and ethnicity

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Marketing3
Finance1
HR1

The department split adds up all the years listed above. FY2026 alone: 1 filings.

Funding

  • Feb 2024 · Series A · $20M · Upload Ventures, Quiet Capital, Pear Ventures
  • Nov 2023 · $14.8M
  • Feb 2022 · Seed · $8M · Pear Ventures, Quiet Capital, FJLabs

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Topsort FAQ

How many employees does Topsort have?

Topsort has about 101 employees, up 14.8% over the 3 months to Jun 2025.

Does Topsort sponsor H1B visas?

Yes. Topsort filed 1 H1B (LCA) application in FY2026, according to the latest U.S. Department of Labor disclosures. It was for a HR role.

What is Topsort's revenue per employee?

Topsort makes about $37K in revenue per employee, based on $3.7M annual revenue and 101 employees.

How much does Topsort pay?

6figr has 4 salary profiles for Topsort in the US, with pay broken down by role, level, gender and ethnicity on the Topsort salaries page. See Topsort salaries

How much funding has Topsort raised?

Topsort has raised $42.85M in total funding; its latest round was Series A in Feb 2024.

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