---
title: "64 Series A Cybersecurity Investors in the US (Nov 2026)"
last_updated: "2026-11-07"
rows: "64"
free_rows: "25"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/series-a-cybersecurity-investors-us/"
---

# 64 Series A cybersecurity investors in the US

We list 64 Series A cybersecurity investors in the US as of November 2026: 61 have an SEC filing on file and 3 were checked on the firm's own website or an official register, and the list was last checked on 7 Nov 2026. The cities with the most head offices on this list are Palo Alto (7), New York (7) and Menlo Park (5).

- 64 investors
- 47 with a fund filing or dated deal in the last 12 months
- $120M median fund size on file (SEC Form D, 48 firms)
- 422 named decision-makers on file

## First 25 of 64 Series A cybersecurity investors in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Jump Capital | VC firm | Chicago, IL | Seed, Series A | Cybersecurity, AI, Fintech, SaaS | New deal, Oct 2026 | $456M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/jump-capital/ |
| Mindset Consulting (US) | VC firm | San Francisco, CA | Seed, Series A | Cybersecurity, B2B, AI, Fintech | Portfolio news, Sep 2026 | $129M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/mindset-consulting-us/ |
| Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Cybersecurity, Energy, Climate Tech, AI | Portfolio news, Nov 2026 | $4.5B (own site) | 2026-11-05 | https://theinvestordatabase.com/investors/energy-impact-partners/ |
| Tribe Capital | VC firm | San Mateo, CA | Seed, Series A, Series B, Growth | Cybersecurity, AI, Crypto and Web3, Generalist | New fund, Oct 2026 | $500M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/tribe-capital/ |
| Translink Capital | VC firm | Palo Alto, CA | Seed, Series A, Series B | Cybersecurity, AI, Developer Tools, Mobility | New fund, Sep 2026 | $174M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/translink-capital/ |
| Madrona | VC firm | Seattle, WA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Biotech, Consumer | New deal, Oct 2026 | $490M (SEC Form D, 2025) | 2026-11-05 | https://theinvestordatabase.com/investors/madrona/ |
| Forgepoint Capital | VC firm | San Mateo, CA | Seed, Series A | Cybersecurity, Future of Work, AI, Defense Tech | Portfolio news, Oct 2026 | $1.2B (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/forgepoint-capital/ |
| Felicis | VC firm | Menlo Park, CA | Seed, Series A | Cybersecurity, AI, Developer Tools, Healthtech | New deal, Oct 2026 | $900M (SEC Form D, 2025) | 2026-11-05 | https://theinvestordatabase.com/investors/felicis/ |
| SixThirty Ventures, LLC | VC firm | Clayton, MO | Seed, Series A | Cybersecurity, Fintech, AI, Healthtech | New deal, Sep 2026 | $134M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/sixthirty-ventures-llc/ |
| Evolution | VC firm | New York, NY | Seed, Series A, Series B, Growth | Cybersecurity, AI, Developer Tools, SaaS | New fund, Sep 2026 | $1.2B (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/evolution/ |
| Ansa | VC firm | New York, NY | Series A, Series B, Growth | Cybersecurity, AI, Healthtech, Media | New fund, May 2026 | $200M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/ansa/ |
| FLF Accelerate | VC firm | Tampa, FL | Pre-seed, Seed, Series A, Series B | Cybersecurity, AI, Fintech, Media | New fund, Sep 2026 | $5M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/flf-accelerate/ |
| SignalFire | VC firm | San Francisco, CA | Seed, Series A, Series B, Growth | Cybersecurity, AI, Healthtech, Developer Tools | New fund, May 2026 | $357M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/signalfire/ |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Cybersecurity, AI, Data, Logistics | New fund, May 2026 | $49M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/techsquare-ventures/ |
| Notable Capital | VC firm | Menlo Park, CA | Series A, Growth | Cybersecurity, AI, Consumer, Fintech | New fund, Oct 2026 | $14M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/notable-capital/ |
| Massive VC | VC firm | Boulder, CO | Seed, Series A, Series B | Cybersecurity, Space, AI, Energy | New fund, May 2026 | $30M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/massive-vc/ |
| Costanoa | VC firm | Palo Alto, CA | Seed, Series A | Cybersecurity, AI, Fintech, Developer Tools | New fund, Sep 2026 | $300M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/costanoa/ |
| Silverton Partners | VC firm | Austin, TX | Seed, Series A | Cybersecurity, AI, Developer Tools, Fintech | New deal, Sep 2026 | $160M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/silverton-partners/ |
| SYN Ventures | VC firm | West Palm Beach, FL | Seed, Series A, Series B | Cybersecurity, AI, Defense Tech, Industrial Tech | New fund, Oct 2026 | $300M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/syn-ventures/ |
| Wing Strategic Partners | VC firm | Palo Alto, CA | Seed, Series A | Cybersecurity, AI, Healthtech, B2B | New deal, Oct 2026 | $40M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/wing-strategic-partners/ |
| Menlo Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Media, Robotics | New fund, Sep 2026 | $800M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/menlo-ventures/ |
| Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Energy, Industrial Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ |
| Dallas Venture Capital I DVC | VC firm | Irving, TX | Seed, Series A, Series B | Cybersecurity, AI, Fintech, Data | New deal, Oct 2026 | $75M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/dallas-venture-capital-i-dvc/ |
| Roo Capital | VC firm | Coconut Grove, FL | Pre-seed, Seed, Series A, Growth | Cybersecurity, AI, Healthtech, Future of Work | New fund, Aug 2026 | $125M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/roo-capital/ |
| Greenfield Partners | VC firm | New York, NY | Series A, Series B, Growth | Cybersecurity, AI, Deep Tech, Fintech | New fund, Jul 2026 |  | 2026-11-04 | https://theinvestordatabase.com/investors/greenfield-partners/ |

You are seeing 25 of 64. The full list adds 39 more investors and 422 named decision-makers.

Get all 64 investors and 422 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-a-cybersecurity-investors-us
This page: https://theinvestordatabase.com/lists/series-a-cybersecurity-investors-us/

## Method and limits
- Source: 61 of the 64 rows carry an SEC filing (Form D or Form ADV). All 64 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule: Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states cybersecurity as a focus on its own site, or we observed it in the firm's portfolio. Stage: the firm states that it invests at Series A.
- Order: Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when Series A is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Fill rates: Of 64 rows: stage 64, sector 64, fund size 57, website 64. In the paid file: named decision-makers on 62 rows, firm email on 26, LinkedIn page on 47, check size on 5.

## Questions
### How many Series A cybersecurity investors in the US are there?
We list 64 as of November 2026. 47 of the 64 have a fund filing or a dated deal in the last 12 months. The cities with the most are Palo Alto (7), New York (7) and Menlo Park (5).

### Which Series A cybersecurity investors in the US raised a new fund in the last 12 months?
32 of the 64 have a fund filing dated in the last 12 months. The most recent on this list are Bessemer Venture Partners (Oct 2026), SYN Ventures (Oct 2026) and Tribe Capital (Oct 2026).

### What is the typical fund size of Series A cybersecurity investors in the US?
The median fund size on file for this list is $120M, across the 48 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 16 do not disclose a size there.

### How do I contact Series A cybersecurity investors in the US?
The paid file holds 422 named decision-makers across 62 of these 64 and a firm email for 26. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.

### Where does the data on Series A cybersecurity investors in the US come from?
61 of the 64 rows have an SEC filing on file (Form D or Form ADV) and 3 were checked on the firm's own website or an official register. Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 7 Nov 2026 at the latest. The whole file is re-verified twice a year.