| Website | altosventures.com |
| Blog | blog.altosventure... |
| @altosventures | |
| Phone | 650-234-9771 |
| investments@altos... | |
| Employees | 7 |
| Founded | 1/96 |
| Altos Ventures I L.P. | |
| Altos Ventures II L.P. | |
| Altos Ventures III L.P. | |
| Altos Ventures IV L.P. |
Altos Ventures is a first-stage venture capital firm. The firm has been the first and lead investor in over 50 high-growth technology companies. More than a dozen of these companies were incubated by Altos and started from scratch.
| Company | Date | Round | Size | Participants |
| Demandbase | 3/13 | Series D | $15M | 6 |
| TVU Networks | 2/13 | Venture Round | 3 | |
| NetBase Solutions | 6/12 | Venture Round | $18.1M | 3 |
| BrightEdge | 3/12 | Series C | $12.6M | 4 |
| Kontagent | 11/11 | Series B | $12M | 3 |
| ROBLOX | 6/11 | Series B | $4M | 2 |
| Demandbase | 5/11 | Series C | $10M | 4 |
| Koofers | 9/10 | Series A | $5M | 4 |
| Kontagent | 6/10 | Series A | $4.5M | 2 |
| NetBase Solutions | 3/10 | Series C | $9M | 2 |
| Koofers | 1/10 | Seed | $2M | 2 |
| Orbit Media | 1/10 | Seed | $500k | 3 |
| Branders.com | 12/09 | Venture Round | $5M | 4 |
| Immunet Corporation | 11/09 | Series A | $2M | 2 |
| ROBLOX | 8/09 | Series A | $2.2M | 2 |
| Hooked Media Group | 5/09 | Series A | $3M | 2 |
| Echo | 10/08 | Series B | $3.6M | 2 |
| Demandbase | 8/08 | Series B | $8M | 3 |
| Provade | 6/08 | Venture Round | $3.3M | 1 |
| CrownPeak | 6/08 | Series B | $6M | 3 |
| WhiteHat Security | 6/08 | Series D | $7M | 4 |
| Hooked Media Group | 4/08 | Seed | $1.5M | 3 |
| Trilibis | 1/08 | Series B | $5.7M | 2 |
| Outspark | 1/08 | Series B | $11M | 3 |
| NetBase Solutions | 12/07 | Series B | $4M | 2 |
| Billeo | 11/07 | Series B | $7M | 4 |
| DemandTec | 8/07 | Debt | $6M | 3 |
| GuardianEdge Technologies | 7/07 | Series B | $10M | 4 |
| GuardianEdge Technologies | 7/07 | Debt | $3.5M | 4 |
| Accolo | 6/07 | Series B | 1 | |
| Outspark | 4/07 | Series A | $4M | 2 |
| Pandora.TV | 4/07 | Series B | $10M | 4 |
| Provade | 9/06 | Series C | $5.2M | 1 |
| WhiteHat Security | 6/06 | Venture Round | $3.5M | 1 |
| Xignite | 6/06 | Series A | $2.2M | 2 |
| Billeo | 4/06 | Series A | $4M | 3 |
| Pandora.TV | 2/06 | Series A | $6M | 2 |
| Provade | 1/06 | Series A | $4M | 1 |
| Cogency Software | 12/05 | Venture Round | $2.5M | 4 |
| SeeControl | 7/05 | Series A | $4.5M | 5 |
| SeeControl | 7/05 | Series A | $4.5M | 5 |
| GuardianEdge Technologies | 6/05 | Series A | $6M | 2 |
| NetBase Solutions | 6/05 | Series A | $5M | 2 |