
Life Sciences at Goldman Sachs Alternatives
Life Sciences at Goldman Sachs Alternatives is the life sciences investing group within Goldman Sachs Asset Management, established in 2021 and led by Amit Kakar. It invests in privately-held, innovative therapeutics, life sciences tools, and diagnostics companies across areas such as precision medicine, genetic medicine, cell therapy, and immunotherapy, typically at early-to-mid and growth stages. Its debut fund, West Street Life Sciences I, closed at $650 million in early 2024.
60% of their portfolio is in Biotech & Life Sciences. They made 3 investments in the last 12 months. Their most common stage is series-b (50% of deals). Average disclosed round size is $176.5M (across 10 rounds with reported amounts).
Portfolio
8
Fund Size
$650M
Top Stage
Series B
Last 12 Mo
3
Team
Colin Walsh, PhD
Managing Director, Life Sciences
Portfolio Breakdown
Stage Distribution
Investment Activity
Portfolio
| Company | Round | Amount | Date |
|---|---|---|---|
| Series B | $152.5M | Aug 2026 | |
| Series B | $137M | Apr 2026 | |
| Series A | $52M | Feb 2026 | |
| SSidewinder Therapeutics | Series B | $137M | Jan 2026 |
| Series B | $137M | Jan 2026 | |
| AAirNexis | Series A | $200M | Jan 2026 |
| Series D | $372.5M | Jan 2025 | |
| Series C | $225M | Oct 2023 | |
| Series B | $152M | Jan 2020 | |
| Series A | $200M | — |
Top Co-Investors
Last updated: 7 October 2026