Aperture Regions › United States › Cybersecurity AI
US Cybersecurity AI startup funding
US Cybersecurity AI startups raised $6.4B across 122 funding rounds at 112 companies in the 12 months to Nov 14, 2026, against $4.2B across 126 rounds in the 12 months before (+53% in capital, -3% in rounds).
Companies headquartered in the United States, all funding stages, by announcement date. Data as of Nov 15, 2026; the last 12 months run Nov 15, 2025 – Nov 14, 2026. Capital counts disclosed amounts only (110 of 122 rounds in the last 12 months).
How much did US Cybersecurity AI startups raise in the last 12 months?
| Last 12 months | 12 months before | Change | |
|---|---|---|---|
| Capital raised (disclosed) | $6.4B | $4.2B | +53% |
| Rounds | 122 | 126 | -3% |
| Companies funded | 112 | 121 | -7% |
How much have US Cybersecurity AI startups raised in 2026?
In 2026 through Nov 14, 2026, US Cybersecurity AI startups raised $5.1B across 100 rounds, against $3.8B across 116 rounds in the same period of 2025.
Which US Cybersecurity AI startups raised the most?
Saviynt raised the most in the last 12 months, 11% of the capital; the three largest companies together took 28%.
| Company | City | Capital raised | Rounds | Latest round |
|---|---|---|---|---|
| Saviynt | El Segundo | $700M | 1 | Series B · Dec 2025 |
| Upwind | San Francisco | $650M | 2 | Series C · Sep 2026 |
| Armadin | Palo Alto | $445M | 2 | Series B · Oct 2026 |
| Island | Dallas | $400M | 1 | Series F+ · Sep 2026 |
| Horizon3 | San Francisco | $250M | 1 | Series E · Aug 2026 |
| TENEX.AI | Sarasota | $250M | 1 | Series B · Mar 2026 |
| XBOW | Seattle | $155M | 2 | Series C · May 2026 |
| Claroty | New York | $150M | 1 | Series F+ · Jan 2026 |
| Torq | Portland | $140M | 1 | Series D · Jan 2026 |
| Twenty | Arlington | $130M | 3 | Series B · Jul 2026 |
Which Cybersecurity AI sub-sectors are growing in the US?
AI & agent security added the most companies: 10 raised in the 12 months before and 21 in the last 12 months.
| Sub-sector | Companies funded (year before → last 12 months) | Rounds | Capital raised |
|---|---|---|---|
| Security operations & incident response | 30 → 23 | 23 | $1.1B |
| AI & agent security | 10 → 21 | 22 | $720M |
| Identity & access | 14 → 15 | 16 | $1.1B |
| Exposure & vulnerability management | 5 → 13 | 13 | $329M |
| Offensive security & pentesting | 4 → 10 | 14 | $1.1B |
| Email, fraud & brand protection | 10 → 10 | 10 | $292M |
| Application & code security | 16 → 8 | 10 | $328M |
| Network & endpoint | 7 → 4 | 4 | $653M |
| Governance, risk & compliance | 12 → 4 | 4 | $64M |
| Cloud & data security | 11 → 3 | 5 | $747M |
1 companies are not yet tagged with a sub-sector (Other / unclear).
How large is a typical US Cybersecurity AI round?
In the last 12 months, the median disclosed Seed round was $8M, Series A round was $28M, Series B round was $72M.
| Stage | Rounds | With a disclosed amount | Median disclosed round |
|---|---|---|---|
| Pre-Seed | 6 | 5 | — |
| Seed | 36 | 33 | $8M |
| Pre-A | 1 | 1 | — |
| Series A | 37 | 32 | $28M |
| Series B | 24 | 23 | $72M |
| Series C | 7 | 7 | — |
| Series D | 2 | 2 | — |
| Series E | 1 | 1 | — |
| Series F+ | 2 | 2 | — |
| Stage not stated | 6 | 4 | — |
Medians are shown where at least 10 amounts are disclosed.
US Cybersecurity AI funding by quarter
| Quarter | Rounds | Capital raised |
|---|---|---|
| 2025 Q1 | 22 | $1.3B |
| 2025 Q2 | 36 | $1.3B |
| 2025 Q3 | 36 | $754M |
| 2025 Q4 | 44 | $1.8B |
| 2026 Q1 | 41 | $2.1B |
| 2026 Q2 | 22 | $736M |
| 2026 Q3 | 26 | $1.8B |
| 2026 Q4 (to date) | 11 | $466M |
Other US sectors: AI Models & Research · AI Infrastructure · Robotics & Physical AI · Industry AI · Defense & Public Safety AI · AI Hardware & Chips · Healthcare & Life Sciences · Fintech AI · Enterprise & Vertical AI · AI Agents · AI Developer Tools · Consumer & Media AI.
Definitions are in the methodology. Report a missing or misreported deal from the link in the footer.