Sound Ventures is a Beverly Hills-based venture capital firm co-founded by Ashton Kutcher and Guy Oseary in 2015. The firm invests early in transformative technology companies, with a focus on category-defining AI businesses and broad technology platforms.
Deal activity decreased year-over-year (3 deals in the last 12 months vs 6 prior). Average disclosed round size is $56.4M (across 164 rounds with reported amounts).
Portfolio
137
Fund Size
$240M
Top Stage
Series A
Last 12 Mo
3
Team
EE
Effie Epstein
Managing Partner
AK
Ashton Kutcher
General Partner
ZG
Zach Gronfein
Investor
JB
Juliette Bolea
VC
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
182 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Witness AI | Series C | $58M | Jan 2026 |
 Polsia | Series A | $30M | Jan 2026 |
| WWitnessAI | Unknown | $58M | Jan 2026 |
 Anthropic | Growth | — | Jan 2026 |
 GC AI | Unknown | $60M | Nov 2025 |
 GC AI | Series B | $60M | Nov 2025 |
 Knit | Series A | $16.1M | Jul 2025 |
| EEphemera | Series B | $20M | Jul 2025 |
 Landbase | Series A | $30M | Jun 2025 |
| CConduit Technology | Series A | $36M | May 2025 |
 Forethought | Series D | $25M | May 2025 |
 Serval | Series B | $75M | Jan 2025 |
| CConduit Technology | Series A | $36M | Jan 2025 |
| Landbase | Series A | $30M | Jan 2025 |
 World Labs | Growth | $230M | Oct 2024 |
 Stability | Growth | $80M | Jun 2024 |
| WWitnessAI | Strategic | $58M | May 2024 |
 Altruist | Series E | $169M | May 2024 |
 Rabbit | Seed | $50M | Jan 2024 |
 Supra | Unknown | $24M | Sep 2023 |
 Hugging Face | Series D | $235M | Aug 2023 |
 Collective | Series C | $50M | Jul 2023 |
| Anthropic | Series C | — | May 2023 |
 EquipmentShare | Growth | $290M | Apr 2023 |
| Anthropic | Series H | $450M | Jan 2023 |
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Top Co-Investors
Y Combinator19 shared
General Catalyst19 shared
Sequoia Capital15 shared
Insight Partners14 shared
Thrive Capital12 shared
BoxGroup12 shared
Nyca Partners11 shared
Salesforce Ventures11 shared
Founders Fund10 shared
Optum Ventures9 shared
Coinbase Ventures9 shared
Lightspeed Venture Partners8 shared
Valor Equity Partners8 shared
Andreessen Horowitz8 shared
Greycroft7 shared
Tusk Venture Partners7 shared
Index Ventures7 shared
500 Global7 shared
GV7 shared
Primary Venture Partners7 shared
Last updated: 7 October 2026