Walden Catalyst Ventures
San Francisco, California, United StatesFounded 2021
Walden Catalyst Ventures is an early-stage venture capital firm focused on deep-tech investments in data and AI across the U.S., Europe, and Israel. Founded in 2021 as a spinoff of Walden International, the firm is led by Lip-Bu Tan and Young Sohn and manages over $550 million in committed capital.
Deal activity decreased year-over-year (2 deals in the last 12 months vs 6 prior). Average disclosed round size is $79.1M (across 40 rounds with reported amounts).
Portfolio
29
Fund Size
$550M
Top Stage
Seed
Last 12 Mo
2
Team
Lip-Bu Tan
Founding Managing Partner
Young Sohn
Founding Managing Partner
Teresa Smith
Chief Financial Officer
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
43 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Nearfield Instruments | Series D | $380M | Jun 2026 |
 Opaque Systems | Series B | $24M | Feb 2026 |
| OOpaque | Series B | $24M | Jan 2026 |
 NeoCognition | Seed | $40M | Jan 2026 |
 Empower Semiconductor | Series D | $140M | Sep 2025 |
 Speedata | Series B | $44M | Jun 2025 |
 Virtue AI | Seed | — | Apr 2025 |
| Virtue AI | Series A | $30M | Apr 2025 |
 Ati Motors | Series B | $20M | Jan 2025 |
| Speedata | Seed | $15M | Jan 2025 |
 ANYbotics | Series C | $60M | Dec 2024 |
| Nearfield Instruments | Series C | — | Jul 2024 |
| NNEARFIELD INSTRUMENTS B.V. | Series C | — | Jul 2024 |
| NNearfield | Series C | $148M | Jul 2024 |
| ANYbotics | Series B | $60M | Jan 2024 |
 AI21 | Series C | $155M | Aug 2023 |
 Mindsdb | Seed | $46.5M | Aug 2023 |
| ANYbotics | Series B | $50M | May 2023 |
 3D Glass | Series C | $30M | Apr 2023 |
 Artera | Unknown | $90M | Jan 2023 |
| Mindsdb | Seed | $25M | Jan 2023 |
 Galileo | Series A | $18M | Nov 2022 |
 Galileo | Series A | $18M | Nov 2022 |
| AI21 | Series B | $64M | Jul 2022 |
| Opaque Systems | Series A | $22M | Jun 2022 |
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Top Co-Investors
Factory9 shared
Intel Capital8 shared
Bessemer Venture Partners7 shared
Koch Disruptive Technologies6 shared
Fidelity Investments6 shared
Invest-NL6 shared
Innovation Industries6 shared
M&G Investments5 shared
NGP Capital4 shared
Pitango VC4 shared
GV4 shared
NVentures4 shared
Thomvest Ventures4 shared
Lightspeed Venture Partners4 shared
Prosperity7 Ventures4 shared
Cambium Capital4 shared
Battery Ventures3 shared
83North3 shared
Viola Ventures3 shared
Last updated: 20 October 2026