Yuri Sagalov
Angel Investor
Palo Alto, United States
Yuri Sagalov is a seed investor in Palo Alto focused on Software and Artificial Intelligence. Yuri Sagalov is the CEO and co-founder of AeroFS, which he started with his co-founder and CTO Weihan Wang in 2010. He graduated from the University of Toronto's elite Engineering Science program, majoring in Computer Engineering. Yuri was studying towards a Masters of Applied Science focusing on Distributed Systems at the UofT before taking aleave of absence to start AeroFS.
- Total investments:
- 42
- Last investment:
- Lead investor:
- 33%
Last updated:
For AI agents: llms.txt
Industries Yuri Sagalov invests in
Stages Yuri Sagalov invests in
Countries Yuri Sagalov invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $3.1M–$11M
- Pre-Seed
- $500k–$9M
- Series A
- $4M–$40M
Investment Focus
Industry
- Software 17 (40%)
- Artificial Intelligence 15 (36%)
- Information Technology 10 (24%)
- Marketplace 5 (12%)
- E-Commerce 4 (10%)
Stage
- Seed 29 (69%)
- Pre-Seed 6 (14%)
- Series A 6 (14%)
- Venture - Series Unknown 1 (2%)
Country
- United States 32 (76%)
- Sweden 2 (5%)
- India 1 (2%)
- Canada 1 (2%)
- United Arab Emirates 1 (2%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Arga Labs
|
Arga Labs develops software testing and validation infrastructure for AI agents and applications. The company provides real-world sandbox environments that replicate third-party services, APIs, command-line interfaces, and MCPs, allowing developers to test software without affecting production systems. Its platform provides digital twins, isolatedsandboxes, production-informed scenarios, automated test runs, and detailed evidence of provider calls, responses, latency, and side effects. Arga also supports pull request validation, browser-based testing, security testing, and autonomous agent testing through deterministic environments. The platform integrates with development and observability tools such as GitHub, Jira, Linear, Sentry, and PostHog to incorporate application context into testing workflows. Arga Labs serves software development teams building applications and AI agents that interact with external services. | $10M / Seed / Aug 26, 2026 | |
Aurelius Systems
|
Aurelius Systems is a defense technology company pioneering the future of defense with the development of edge-deployed, AI-powered laser systems designed to counter unmanned aerial systems (UAS) threats. | $40M / Series A / Aug 05, 2026 | |
1001 AI
|
1001 AI is building The Sovereign Artificial Intelligence Platform of the Middle East | $30M / Series A / Jun 30, 2026 | |
Amphiform
|
Amphiform is a clean energy company that develops materials for scalable and portable power systems using atom-by-atom engineering. | $5.5M / Pre-Seed / May 19, 2026 | |
Luel
|
Luel develops AI training data marketplace that supplies training datasets to connect AI enterprises and content contributors. | $31M / Seed / May 15, 2026 | |
Numos
|
Numos develops an AI-powered platform designed to automate financial operations for businesses. Its platform integrates with existing enterprise systems and uses advanced reasoning to turn raw financial data into actionable insights, helping finance teams reduce manual work and focus on strategic decision-making. | $4.3M / Seed / Apr 02, 2026 | |
Nexus
|
Nexus build production-ready AI agents without code for non-technical teams in large organizations. | $4.3M / Seed / Mar 31, 2026 | |
Autoscience
|
Autoscience merges science and tech to automate vehicles, improving safety, efficiency, and performance. It integrates AI, robotics, and materials science to transform transportation. | $14M / Seed / Mar 18, 2026 | |
AgentMail
|
AgentMail provides an API-first email platform that enables AI agents to send, receive, and manage emails with automation and analytics. | $6M / Seed / Mar 10, 2026 | |
QFEX
|
QFEX is the 24/7 exchange for traditional financial markets. We let you trade US equities, commodities and FX pairs with (or without) leverages of up to 50x. On QFEX, UX comes first: brokerless market access, seamless integration with traditional payment rails, and ultra-efficient Perpetual Futures offered over all asset classes. Trading hasnever been simpler or cheaper than with QFEX.Founded by Quants and Engineers from Citadel & Tower Research who saw an opportunity to make markets how they always should have been, QFEX will eventually replace the entire $100 billion exchange and clearing industry. | $9.5M / Seed / Mar 05, 2026 | |
| See all 42 investments → | |||
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FAQ
What does Yuri Sagalov invest in?
Yuri Sagalov invests primarily in Software, Artificial Intelligence and Information Technology startups, most often at Seed and Pre-Seed stage. Most of the 42 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Yuri Sagalov's check size?
Yuri Sagalov typically joins rounds of $3.1M–$11M at Seed, $500k–$9M at Pre-Seed and $4M–$40M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Yuri Sagalov participates in.
How do I contact Yuri Sagalov?
Public channels for Yuri Sagalov include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Yuri Sagalov last invest?
The most recent investment recorded for Yuri Sagalov closed in Aug 2026. Shizune tracks 42 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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