companies / abnormal-ai
Generated UTC · publication cutoff 2026-11-09
Insufficient cited evidence for a two-sentence summary.
Abnormal AI was listed in Greylock's portfolio, recorded 2026-09-27.
verified=2026-05-18 json
| total_raised | 546,000,000546.0M | ○ |
|---|---|---|
| founded | 2018 | |
| hq | San Francisco, USA | |
| industry | unknown | |
| stage | series-b+ |
Abnormal AI runs an email security platform that uses behavioral AI to detect phishing, business email compromise, and account takeovers by modeling normal user behavior. It serves Microsoft 365 and Google Workspace enterprises, including 25% of the Fortune 500. Unlike signature-based gateways, Abnormal catches BEC that bypasses M365.
No cited completed company acquisition recorded.
Dated disclosures. Customer relationships and classifications are historical; ARR is separate from revenue.
No cited disclosure recorded: named customer, disclosed revenue, ARR, count, B2B / B2C, sector, go-to-market.
No cited valuation with an explicit basis is recorded.
Historical post-money / actual annual or stated TTM revenue. Same currency; economic valuation date within 90 days of revenue period end, inclusive. No FX, ARR, annualized revenue, estimates or projections. Conflicts and ambiguous ties are withheld.
No qualifying pair recorded.
| date | type | amount | lead | src |
|---|---|---|---|---|
| 2024-08-07 | series-d+ | 250,000,000250.0M | null | ○ |
| investor | src |
|---|---|
| Greylock | ○ |
| Insight Partners | ○ |
Vercel, Next.js, Filestack, Osano, React, Webpack
| fact | status | src |
|---|---|---|
| Series D+, $250.0M | attributed | ○ |
| Investor Greylock | sourced | WEB |
| existence | self-reported | WEB |
| description | self-reported | WEB |
| date | fact | change | src |
|---|---|---|---|
| 2026-09-27latest_round: series-d+, $250.0M, 2024-08-07, lead: greylock → series-d+, $250.0M, 2024-08-07, lead: null, ○ 2026-05-18 | latest_round | series-d+, $250.0M, 2024-08-07, lead: greylock → series-d+, $250.0M, 2024-08-07, lead: null | ○ 2026-05-18 |
| 2026-09-27provenance_investor_greylock: unknown → sourced, WEB 2026-09-27 | provenance_investor_greylock | unknown → sourced | WEB 2026-09-27 |
Records begin 2026-09-24. all_changes