| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Spignesi Robert G. Jr. | 6.3% | $7,094,646 | 2,647,256 | SPIGNESI ROBERT G JR | 28 Mar 2024 |
As of 30 Sep 2025, 29 institutional investors reported holding 14,828,987 shares of RAPID MICRO BIOSYSTEMS, INC. - Class A Common Stock, $0.01 par value per share (RPID). This represents 35% of the company’s total 42,019,937 outstanding shares.
The largest institutional shareholders of RAPID MICRO BIOSYSTEMS, INC. - Class A Common Stock, $0.01 par value per share (RPID) together control 35% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Bain Capital Life Sciences Investors, LLC | 20% | 8,434,560 | 0% | 1.9% | $28,171,430 |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 4.4% | 1,848,296 | 0% | 33% | $6,173,309 |
| VANGUARD GROUP INC | 2.3% | 965,018 | +6.7% | 0% | $3,223,160 |
| Parkman Healthcare Partners LLC | 2.2% | 913,443 | 0% | 0.34% | $3,050,900 |
| Schonfeld Strategic Advisors LLC | 1.5% | 646,579 | -38% | 0.02% | $2,159,572 |
| Advent International, L.P. | 1.4% | 577,777 | 0% | 0.04% | $1,929,775 |
| BlackRock, Inc. | 1.2% | 483,871 | +1.5% | 0% | $1,616,130 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.49% | 204,687 | +0.3% | 0% | $683,859 |
| Evernest Financial Advisors, LLC | 0.48% | 200,234 | +355% | 0.19% | $668,782 |
| RENAISSANCE TECHNOLOGIES LLC | 0.26% | 110,187 | -0.72% | 0% | $368,025 |
| STATE STREET CORP | 0.22% | 91,474 | +53% | 0% | $305,523 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 0.15% | 62,326 | 0% | 0.03% | $208,169 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.14% | 58,387 | +13% | 0% | $195,013 |
| DIMENSIONAL FUND ADVISORS LP | 0.13% | 55,642 | +38% | 0% | $185,725 |
| NORTHERN TRUST CORP | 0.11% | 47,726 | -1.7% | 0% | $159,405 |
| JANE STREET GROUP, LLC | 0.09% | 38,140 | 0% | $127,388 | |
| XTX Topco Ltd | 0.05% | 22,165 | -47% | 0% | $74,031 |
| MORGAN STANLEY | 0.05% | 20,550 | -43% | 0% | $68,637 |
| AMERICAN CENTURY COMPANIES INC | 0.04% | 16,922 | 0% | 0% | $56,519 |
| Legato Capital Management LLC | 0.03% | 14,684 | 0% | 0.01% | $49,045 |
| Hudson Bay Capital Management LP | 0.03% | 11,461 | 0% | $38,280 | |
| BNP PARIBAS FINANCIAL MARKETS | 0.01% | 3,626 | 0% | 0% | $12,111 |
| RESOURCES MANAGEMENT CORP /CT/ /ADV | 0% | 500 | 0% | 0% | $2,000 |
| OSAIC HOLDINGS, INC. | 0% | 300 | 0% | 0% | $990 |
| UBS Group AG | 0% | 290 | -97% | 0% | $969 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q3 | 14,828,987 | $49,529,221 | -$1,092,903 | $3.34 | 29 |
| 2025 Q2 | 15,145,610 | $52,253,212 | -$495,636 | $3.45 | 29 |
| 2025 Q1 | 15,315,094 | $40,431,707 | +$9,172,018 | $2.64 | 28 |
| 2024 Q4 | 11,949,084 | $10,753,903 | -$597,116 | $0.90 | 18 |
| 2024 Q3 | 17,558,874 | $15,627,447 | -$775,835 | $0.89 | 18 |
| 2024 Q2 | 18,509,095 | $12,216,040 | -$367,965 | $0.66 | 18 |
| 2024 Q1 | 18,013,714 | $17,474,138 | -$839,346 | $0.97 | 20 |
| 2023 Q4 | 20,091,717 | $14,868,385 | -$1,022,716 | $0.74 | 24 |
| 2023 Q3 | 21,456,755 | $23,172,706 | -$417,040 | $1.08 | 22 |
| 2023 Q2 | 21,872,837 | $21,873,560 | -$1,294,384 | $1.00 | 22 |
| 2023 Q1 | 22,801,270 | $29,869,332 | -$1,708,625 | $1.31 | 29 |
| 2022 Q4 | 24,499,693 | $27,691,193 | -$72,453 | $1.13 | 39 |
| 2022 Q3 | 25,604,357 | $82,656,264 | -$10,619,055 | $3.23 | 46 |
| 2022 Q2 | 25,990,589 | $111,762,000 | -$10,206,238 | $4.30 | 44 |
| 2022 Q1 | 26,648,173 | $180,964,834 | +$33,477,260 | $6.79 | 56 |
| 2021 Q4 | 21,435,440 | $227,859,000 | -$13,559,105 | $10.64 | 54 |
| 2021 Q3 | 21,751,575 | $401,372,000 | +$401,372,081 | $18.47 | 49 |