About SignalFire
SignalFire is a venture capital firm founded in 2013. It is primarily based out of San Francisco, United States. As of Oct 2026, SignalFire is an active investor, having invested in 198 companies, with 22 new investments in the last 12 months. It primarily invests in Series A round in United States based startups. Its investments are spread across a wide range of sectors from Enterprise Applications to High Tech and FinTech. Most recently it participated in the $***** Seed round of Preference Model Overall, SignalFire portfolio has seen 12 unicorns, 3 IPOs and 24 acquisitions including key companies like Aura, Lime and Uber. A lot of funds co-invest with SignalFire, with names like Accel sharing a substantial percentage of its portfolio. SignalFire has team of 53 people including 12 partners.Key Metrics
Team Members
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Series A, Seed & 5 more
Portfolio Acquisitions
Portfolio Unicorns
Deals in last 12 months
SignalFire's List of Top Investments
SignalFire has a portfolio of 198 companies, including 12 unicorns. Their most notable investments are in Moxie and Karat.Their portfolio spans across United States, United Kingdom, Germany and 5 more locations. They have invested in Enterprise Applications, High Tech, FinTech and 25 other sectors, across stages such as Series A, Seed and 5 more. Here is the list of top investments by SignalFire:1. Aura
Provider of online safety solutions for identity, privacy, and devices. The company offers credit monitoring, identity theft protection, and suspicious transaction alerts. It provides a privacy assistant, parental controls, and cyberbullying protection. The company delivers a virtual private network, antivirus software, and a password manager.
Key facts about Aura
- Founded Year: 2017
- Location: Boston (United States)
- Stage: Public
- Total Funding till date: $672M
- Employee Count: 1,360 as on Sep 30, 2026
- Investors: Annox Capital, Ten Eleven Ventures and 13 Others
- Latest Funding Round: Series G, Mar 24, 2025, $*****
- Highlight: Public
2. Lime
App-based rental platform providing self-drive electric kick-scooter. The platform enables users to find the nearest available scooter and start the ride by scanning their QR code or access code. Users should provide rider details, payment details, location, and more for book the scooter. It offers features like variant payment options, and more. At the end of the ride, users can park the vehicle at their legal locations. Their mobile app is available for Android and iOS devices
Key facts about Lime
- Founded Year: 2017
- Location: San Francisco (United States)
- Stage: Public
- Total Funding till date: $1.4B
- Employee Count: 2,813 as on Sep 30, 2026
- Investors: Meritech, Star Tech NG and 100 Others
- Latest Funding Round: Conventional Debt, Nov 04, 2021, $*****
- Highlight: Public
3. Uber
Provider of multisided technology platforms that match consumers with independent providers of ride, delivery, and freight services. The company develops and maintains platforms that connect consumers looking for transportation, food delivery, and grocery services with independent providers. Additionally, the technology connects shippers and carriers within the freight industry to facilitate the movement of goods.
Key facts about Uber
- Founded Year: 2009
- Location: San Francisco (United States)
- Annual Revenue: $1B+ as on Dec 31, 2025
- Stage: Public
- Total Funding till date: $13.2B
- Employee Count: 34,000 as on Dec 31, 2025
- Investors: TrueBridge, InvestX and 192 Others
- Latest Funding Round: Post IPO, Dec 19, 2020, $*****
- Highlight: Public
4. Grammarly
Developer of software providing automated writing assistance and grammar corrections. This platform offers real-time suggestions for text clarity, tone adjustment, and stylistic consistency across various digital applications. It utilizes artificial intelligence to identify errors, propose rewrites, and assist with document drafting. The tools are designed to facilitate communication by providing feedback on phrasing and structure to ensure intended messages are conveyed effectively. These services support users in maintaining consistent brand voices and professional standards throughout their written correspondence and project materials.
Key facts about Grammarly
- Founded Year: 2009
- Location: San Francisco (United States)
- Valuation: $*****
- Stage: Series B
- Total Funding till date: $545M
- Employee Count: 4,208 as on Sep 30, 2026
- Investors: Section Partners, Archer Venture Capital and 9 Others
- Latest Funding Round: Conventional Debt, May 29, 2025, $*****
- Highlight: Editors' Pick
5. Alchemy
Provider of complete blockchain developer platform. It provides enterprise-grade Web3 infrastructure rollups-as-a-service, embedded, smart wallets, gasless transactions, stablecoin orchestration, DeFi primitives, real-time webhooks, portfolio/token APIs, and comprehensive devtools.
Key facts about Alchemy
- Founded Year: 2013
- Location: San Francisco (United States)
- Valuation: $*****
- Stage: Series C
- Total Funding till date: $564M
- Employee Count: 366 as on Sep 30, 2026
- Investors: Silver Lake, Redpoint Ventures and 37 Others
- Latest Funding Round: Series C, Jan 28, 2022, $*****
- Highlight: Editors' Pick
SignalFire's Year-on-Year Investment Trends
SignalFire has invested in 198 companies over the last 11 years, with an average of 15 new investments annually in the last 10 years. In 2025, it made 28 investments, while as of Oct 2026, it has made 24 investments in this year. Its most recent first time investment was in Preference Model and most recent follow-on round was in Outmarket.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 17 | 7 | 24 |
2025 | 19 | 9 | 28 |
2024 | 9 | 13 | 22 |
2023 | 8 | 10 | 18 |
2022 | 20 | 17 | 37 |
2021 | 25 | 20 | 45 |
2020 | 20 | 6 | 26 |
2019 | 15 | 8 | 23 |
2018 | 6 | 0 | 6 |
2017 | 10 | 1 | 11 |
SignalFire's Investments by Stage
SignalFire has made 66 investments in Series A stage with an average round size of $19.5M, 55 investments in Seed stage with an average round size of $5.67M and 28 investments in Series B stage with an average round size of $34.4M.Stage of entry | No. of Investments |
|---|---|
Series A | 66 |
Seed | 55 |
Series B | 28 |
Series C | 4 |
Conventional Debt | 1 |
Others | 2 |
Note: We have considered here, only first round of investments
SignalFire's Investments by Sector
SignalFire has a diverse portfolio, with companies operating in the Enterprise Applications, FinTech, HealthTech, Vertical SaaS and Enterprise Infrastructure. Notably, it has invested in 191 Tech companies, 162 Enterprise (B2B) companies, 148 Software companies and at least 87 companies focusing on Saas.Sector | No. of Investments |
|---|---|
Enterprise Applications | 113 |
FinTech | 30 |
HealthTech | 30 |
Vertical SaaS | 28 |
Enterprise Infrastructure | 26 |
Others | 135 |
Note: We have considered here, only first round of investments
SignalFire's Investments by Geography
SignalFire has made most investments in United States (139), followed by United Kingdom where it has made 4 investments.Country | No. of Investments |
|---|---|
United States | 139 |
United Kingdom | 4 |
Germany | 3 |
Israel | 3 |
India | 2 |
Others | 3 |
Note: We have considered here, only first round of investments
SignalFire's recent investments
SignalFire has made 24 investments in 2026 so far. Preference Model and Outmarket are the latest among them.Here are the most recent investments by SignalFire:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Oct 07, 2026 | - | Seed | 1975 | [+5] | |
Sep 28, 2026 | United States | Series B | 5094 | [+3] | |
Aug 31, 2026 | United States | Series A | 8577 | [+2] | |
Aug 11, 2026 | United States | Series B | 2960 | ||
Aug 03, 2026 | United States | Series E | 7397 | [+11] |
Unicorns in SignalFire's Portfolio
SignalFire has 12 unicorns in its portfolio - Horizon Three AI, Whop, Solace Health and others. The most recent unicorn in their portfolio is Horizon Three AI. It became a unicorn in 2026, 5 years after SignalFire first invested in it.Here is a list of unicorns in SignalFire's portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
62 | Cloud based pentesting platform | 2019 | San Francisco | Series E | wfd{omo | ||
75 | Digital platform that provides tools for building and managing online businesses | 2021 | Brooklyn | Series D | wljgeyk | ||
63 | Provider of patient centered healthcare platform | 2022 | Redwood City | Series C | mbymecc | ||
70 | Developer of AI platform for personal injury claim management solutions | 2019 | San Francisco | Series E | okrmems | ||
66 | Digital platform that connects clients with licensed therapists and insurance companies | 2020 | New York City | Series D | szxcznd |
IPOs and Publicly Listed companies in SignalFire's Portfolio
3 of SignalFire's portfolio companies have become public. Aura got listed on the Australian Securities Exchange (ASX), in Jul 2026 and Lime got listed on the National Association of Securities Dealers Automated Quotations (NASDAQ) at marketcap of $1.6B.Here are SignalFire's portfolio companies that went public:
Company | IPO Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Jul 09, 2026 | - | - | 6668 | |
Jul 01, 2026 | - | - | 2478 | |
May 09, 2019 | - | - | 9162 |
Acquired companies in SignalFire's Portfolio
24 companies from SignalFire's portfolio have been acquired. The most recent acquisition was Scope AR in Jul 2026 by Flatirons for $*****.Here are SignalFire's portfolio companies that got acquired most recently:
Company | Acquisition Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Jul 01, 2026 | Mar 20, 2019 | Series A | 5386 | |
Mar 10, 2026 | Aug 25, 2020 | Series A | 3934 | |
Feb 25, 2026 | Dec 01, 2017 | Series A | 8164 | |
Jan 14, 2026 | Nov 16, 2021 | Seed | 6068 | |
Jan 14, 2026 | - | - | 4497 |
Team profile of SignalFire
SignalFire has a team of 53 members including 12 Partners, 4 Venture Partners and 3 Principals located in United States. SignalFire's team sits on the board of 2 companies.Here is a list of top team members in SignalFire:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Denver | - | ||
Partner | Redwood City | - | ||
Partner | Fremont | |||
Partner | United States | - | ||
Partner | New York City | - | ||
Partner | San Francisco | - | ||
Partner | San Francisco | - | - | |
Partner | San Francisco | - | ||
Partner | Boston | - | ||
Partner | San Francisco | - | ||
Partner | San Francisco | - |
Co-investors of SignalFire
Over the past 11 years, 1062 investors have co-invested in SignalFire's portfolio companies. This includes funds and angels.
- Invested before SignalFire: Y Combinator, General Catalyst and 301 others have invested in rounds before SignalFire. There are 15 companies where Y Combinator has invested before SignalFire and 4 companies where General Catalyst has invested before SignalFire.
- Top Co-investors of SignalFire: 464 investors entered a company along with SignalFire. These include investors like Accel (6 companies).
- Invested after SignalFire: A total of 295 investors have invested in SignalFire's portfolio after their investments. Top Investors include Insight Partners (5 companies), New Enterprise Associates (5 companies) and SoftBank Vision Fund (4 companies).
Recent News related to SignalFire
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Outmarket AI Secures $34.5M Series B Funding Led by SignalFireMassinvestor•Sep 29, 2026•Outmarket, Fika Ventures, SignalFire, TTV Capital and 2 others
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Horizon3 Raises $250 Million for AI-Driven Cyber DefensePYMNTS.com•Aug 04, 2026•Horizon Three AI, Nea, NightDragon, New Enterprise Associates and 10 others
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Credible Data Raises $10M Seed Funding for Enterprise AI PlatformThe SaaS News•Jul 29, 2026•Gradient Ventures, Credible Data, K5 Global, SignalFire and 2 others
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Cordant emerges from stealth with $8M to build financial infrastructureRefresh Miami•Jul 21, 2026•Oak HC/FT, Motive Partners, Nascent Ventures, Motive and 9 others
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Tangos AI Secures $20M in Seed Funding to Automate Financial Crime InvestigationsSiliconAngle•Jul 07, 2026•Red Dot Capital Partners, VentureIsrael, Leaders Fund, scrape.do and 3 others
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Fan Engagement Platform swsh Raises $4 Million in Seed FundingMBW•Jun 16, 2026•swsh, SignalFire, Groupeugc, MaC Venture Capital and 1 other
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Billables AI Raises $10.2 Million Series A to Scale LegalTipRanks•Jun 10, 2026•Billables, Avenue Growth Partners, Alumni Ventures, SignalFire and 1 other
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Vector Secures $10M Series A for AI-Driven B2B Audience TargetingC2 Media•May 31, 2026•Vector AI, HubSpot, SignalFire
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Blank Bio Announces Seed Financing and Strategic Collaboration with PacBio to Advance RNA Foundation Models for Precision OncologyBusiness Wire•May 19, 2026•Blank Bio, PacBio, Leonis Capital, Ripple Ventures and 3 others
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Outmarket AI Secures $17 Million Series A Funding Led by Permanent Capital VenturesMassinvestor•May 13, 2026•Outmarket, SignalFire, TTV Capital, Dash Fund and 1 other
