Rapid Micro Biosystems, Inc. (RPID) ownership: Top institutional holder: Bain Capital Life Sciences Investors, LLC ($19.15M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Bain Capital Life Sciences Investors, LLC | 8434560.00 | $19.15M | 2026-03-31 |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 1848296.00 | $4.20M | 2026-03-31 |
| VANGUARD GROUP INC | 978781.00 | $2.84M | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 982494.00 | $2.23M | 2026-03-31 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 883931.00 | $2.01M | 2026-03-31 |
| Advent International, L.P. | 552377.00 | $1.25M | 2026-03-31 |
| Parkman Healthcare Partners LLC | 354465.00 | $1.03M | 2025-12-31 |
| Schonfeld Strategic Advisors LLC | 352433.00 | $1.02M | 2025-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.