SignalFire
VC Fund
San Francisco, United States
SignalFire is a venture capital firm that invests in seed-stage companies and breakout companies. The company focuses on providing data-driven insights and tailored advisory programs across various sectors, including health, fintech, and cybersecurity.
- Total investments:
- 318
- Last investment:
- Lead investor:
- 40%
Last updated:
For AI agents: llms.txt
Industries SignalFire invests in
Stages SignalFire invests in
Countries SignalFire invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $2.2M–$12M
- Series A
- $9.7M–$55M
- Series B
- $20M–$75M
Investment Focus
Industry
- Software 56 (18%)
- Artificial Intelligence 38 (12%)
- Information Technology 34 (11%)
- Health Care 25 (8%)
- SaaS 23 (7%)
Stage
- Series A 76 (24%)
- Seed 72 (23%)
- Series B 42 (13%)
- Series C 20 (6%)
- Funding Round 14 (4%)
Country
- United States 142 (45%)
- Israel 3 (1%)
- Germany 2 (1%)
- United Kingdom 2 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Chris Scoggins
Partner
|
Partner | Total investments: 23 | Find email | |
Elaine Zelby
Venture Partner
|
Venture Partner | Total investments: 3 | Find email | |
Jim Stoneham
Partner
|
Partner | Total investments: 1 | Find email | |
Josh Constine
Principal investor and Head Of Content
|
Principal investor and Head Of Content | Total investments: 6 | Find email | |
Alex Garden
Venture Partner
|
Venture Partner | Total investments: 3 | Find email | |
| See all 19 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Horizon3.ai
|
Horizon3.ai's mission is to help you find and fix your attack vectors before criminals exploit them. NodeZero, our automated penetration testing solution, enables organizations to continuously assess the security posture of their enterprise, including external, identity, on-prem, IoT, and cloud attack surfaces. Like APTs, ransomware, andother threat actors, our algorithms discover and fingerprint your attack surface, identifying the ways exploitable vulnerabilities, misconfigurations, harvested credentials, and dangerous product defaults can be chained together to facilitate a compromise. NodeZero is a true self-service SaaS offering that is safe to run in production and requires no persistent or credentialed agents. You will see your enterprise through the eyes of the attacker, identify your ineffective security controls, and ensure your limited resources are spent fixing problems that can actually be exploited. Founded in 2019 by industry, US Special Operations, and US National Security veterans, Horizon3.ai is headquartered in San Francisco, CA, and made in the USA. | $250M / Series E / Aug 03, 2026 | |
Cordant
|
Cordant serves as the connective operational fabric for modern financial infrastructure. Operating as a shared context layer above existing legacy systems, it enables institutions to analyze activity, surface underlying risk, and coordinate critical payment decisions in real time. The platform provides a single operational picture acrossdisconnected networks to help risk and treasury teams remain proactive rather than reactive. | $8M / Seed / Jul 21, 2026 | |
Pure
|
Pure Poker is a privately held fintech and software company that develops a legal, compliant, rake-free real-money online poker platform. Headquartered in San Francisco, California, the company replaces the traditional casino "house" model with a trusted, identity-verified social gaming network. | $8M / Seed / Jul 15, 2026 | |
Tangos Ai
|
Tangos Ai creates autonomous agents that reason, research, connect evidence, and produce audit-ready results for banks, financial institutions, and national security organizations. | $20M / Seed / Jul 07, 2026 | |
Swsh
|
Swsh is a social app that aims to strengthen true friendships rather than superficial relationships with followers. | $4M / Seed / Jun 16, 2026 | |
Billables AI
|
Billables AI is the AI platform for modern professional services including lawyers, consultants, accountants, and marketers. The flagship product, the Automated Billable Time Report, helps professional service providers streamline their billing process and recover more billable time. The software integrates with workflows (like Microsoft, Google,Adobe, and Zoom), and captures billable time in the background, generating a completed time report with client matching and auto-generated descriptions that are personalized to each user. | $10.2M / Series A / Jun 09, 2026 | |
Blank Bio
|
Blank Bio develops a computational toolkit for RNA therapeutics that applies foundation models. | $7.2M / Seed / May 19, 2026 | |
Outmarket AI
|
Outmarket AI offers an AI-driven platform to transform commercial insurance operations by enhancing efficiency and productivity. The platform integrates data to provide real-time insights, automate workflows, and streamline processes such as data analysis, submission generation, and market placement. It serves brokers, managing general agents(MGAs), and wholesalers, helping them to boost sales, improve strategic performance, and accelerate growth. Leveraging natural language processing, machine learning and knowledge graphs, it helps brokers and carriers identify cross-selling potential, optimize carrier placements, and maximize profitability. | $17M / Series A / May 13, 2026 | |
Vector
|
Vector helps B2B sales reps and SDRs generate pipeline by activating company's network avoiding cold prospecting and screaming into a void. | $10M / Series A / May 13, 2026 | |
CopilotKit
|
CopilotKit is the full-stack framework for building user interactive agents and copilots. The company behind the AG-UI Protocol. | $20.5M / Series A / May 05, 2026 | |
| See all 318 investments → | |||
Co-Investors
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FAQ
What does SignalFire invest in?
SignalFire invests primarily in Software, Artificial Intelligence and Information Technology startups, most often at Series A and Seed stage. Most of the 318 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 SignalFire's check size?
SignalFire typically joins rounds of $2.2M–$12M at Seed, $9.7M–$55M at Series A and $20M–$75M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds SignalFire participates in.
How do I contact SignalFire?
Public channels for SignalFire 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.
Who are the partners at SignalFire?
The team at SignalFire includes Chris Scoggins (Partner), Elaine Zelby (Venture Partner) and Jim Stoneham (Partner), among 19 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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