Proofpoint is a suite of email security and security awareness training tools, headquartered in Sunnyvale, United States, founded in 2002.
| Date | Round | Amount | Investors |
|---|---|---|---|
| 2019-08-21 | Post-IPO | $800M | Public Offering |
| 2008-02-26 | Series E+ | $28M | DAG Ventures, KG Investments, Lighthouse Capital Partners, Mohr Davidow Ventures, RRE Ventures, Meritech Capital Partners, Inventures Group, Bridgescale Partners, Benchmark, Icon Ventures |
| 2006-03-23 | Series E+ | $20M | Bridgescale Partners, Benchmark, Greenspring Associates, Icon Ventures, Inventures Group, Meritech Capital Partners, Mohr Davidow Ventures, RRE Ventures |
| 2005-06-29 | Series D | $2M | Icon Ventures |
| 2004-09-14 | Series C | $20M | Bridgescale Partners, Meritech Capital Partners, DAG Ventures, Inventures Group, Benchmark, Lighthouse Capital Partners, Icon Ventures, Mohr Davidow Ventures, RRE Ventures, Greenspring Associates |
| 2003-10-14 | Series B | $9M | RRE Ventures, Benchmark, Inventures, Stanford University |
| 2003-01-02 | Series A | $6.5M | Benchmark, Mohr Davidow Ventures |
Proofpoint was acquired by Thoma Bravo for $12.3B (2021-04-26).
| Date | Company | Amount |
|---|---|---|
| 2026-02-12 | Acuvity | Undisclosed |
| 2025-05-19 | Nuclei | Undisclosed |
| 2025-05-12 | Hornetsecurity | Undisclosed |
| 2024-10-28 | Normalyze | Undisclosed |
| 2023-10-30 | Tessian | Undisclosed |
| 2022-12-12 | Illusive | Undisclosed |
Data from The Signal by Return on Security — cybersecurity funding, M&A activity, and company intelligence.