| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Spignesi Robert G. Jr. | 6.3% | $9,133,033 | 2,647,256 | SPIGNESI ROBERT G JR | 28 Mar 2024 | |||
| Endeavour Medtech Growth II LP | 5.7% | $6,545,587 | 2,257,099 | Endeavour Medtech Growth II LP | 31 Dec 2025 |
As of 31 Dec 2025, 42 institutional investors reported holding 14,620,290 shares of RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID). This represents 37% of the company’s total 39,598,228 outstanding shares.
The largest institutional shareholders of RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) together control 36% 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 | 21% | 8,434,560 | 0% | 1.9% | $24,460,224 |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 4.7% | 1,848,296 | 0% | 36% | $5,360,058 |
| VANGUARD GROUP INC | 2.5% | 978,781 | +1.4% | 0% | $2,838,465 |
| Advent International, L.P. | 1.5% | 577,777 | 0% | 0.03% | $1,675,553 |
| Parkman Healthcare Partners LLC | 0.9% | 354,465 | -61% | 0.1% | $1,027,949 |
| Schonfeld Strategic Advisors LLC | 0.89% | 352,433 | -45% | 0.01% | $1,022,055 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.55% | 217,568 | +6.3% | 0% | $631,116 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.43% | 172,235 | +195% | 0% | $499,482 |
| BlackRock, Inc. | 0.4% | 156,666 | -68% | 0% | $454,332 |
| CITADEL ADVISORS LLC | 0.32% | 126,539 | 0% | $366,963 | |
| Evernest Financial Advisors, LLC | 0.32% | 125,000 | -38% | 0.1% | $468,750 |
| 683 Capital Management, LLC | 0.3% | 120,773 | 0.03% | $350,242 | |
| MILLENNIUM MANAGEMENT LLC | 0.29% | 116,502 | 0% | $337,856 | |
| RENAISSANCE TECHNOLOGIES LLC | 0.29% | 115,627 | +4.9% | 0% | $335,318 |
| JANE STREET GROUP, LLC | 0.27% | 105,301 | +176% | 0% | $305,372 |
| SEI INVESTMENTS CO | 0.24% | 93,616 | 0% | $271,486 | |
| STATE STREET CORP | 0.23% | 91,474 | 0% | 0% | $265,275 |
| Informed Momentum Co LLC | 0.19% | 77,182 | 0.02% | $223,828 | |
| MARSHALL WACE, LLP | 0.16% | 62,911 | 0% | $182,443 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 0.16% | 62,326 | 0% | 0.03% | $180,745 |
| DIMENSIONAL FUND ADVISORS LP | 0.14% | 56,182 | +0.97% | 0% | $162,481 |
| GOLDMAN SACHS GROUP INC | 0.14% | 55,306 | 0% | $160,387 | |
| NORTHERN TRUST CORP | 0.1% | 40,487 | -15% | 0% | $117,412 |
| Qube Research & Technologies Ltd | 0.08% | 33,099 | 0% | $95,987 | |
| MORGAN STANLEY | 0.08% | 31,389 | +53% | 0% | $91,028 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 14,620,290 | $42,504,363 | -$778,137 | $2.90 | 42 |
| 2025 Q3 | 14,828,987 | $49,529,221 | -$1,092,903 | $3.34 | 29 |
| 2025 Q2 | 15,145,610 | $52,253,212 | -$495,637 | $3.45 | 29 |
| 2025 Q1 | 15,315,094 | $40,431,707 | +$9,172,017 | $2.64 | 28 |
| 2024 Q4 | 11,949,084 | $10,753,903 | -$597,113 | $0.90 | 18 |
| 2024 Q3 | 17,558,874 | $15,627,447 | -$775,836 | $0.89 | 18 |
| 2024 Q2 | 18,509,095 | $12,216,040 | -$367,966 | $0.66 | 18 |
| 2024 Q1 | 18,013,714 | $17,474,138 | -$839,869 | $0.97 | 20 |
| 2023 Q4 | 20,091,717 | $14,868,385 | -$1,022,717 | $0.74 | 24 |
| 2023 Q3 | 21,456,755 | $23,172,706 | -$417,040 | $1.08 | 22 |
| 2023 Q2 | 21,872,837 | $21,873,560 | -$1,294,374 | $1.00 | 22 |
| 2023 Q1 | 22,805,840 | $29,875,332 | -$3,621,510 | $1.31 | 30 |
| 2022 Q4 | 24,500,193 | $27,692,193 | -$71,950 | $1.13 | 40 |
| 2022 Q3 | 25,605,992 | $82,661,264 | -$10,626,216 | $3.23 | 47 |
| 2022 Q2 | 26,054,592 | $112,038,000 | -$10,349,820 | $4.30 | 47 |
| 2022 Q1 | 26,648,497 | $180,967,834 | +$33,474,300 | $6.79 | 58 |
| 2021 Q4 | 21,436,197 | $227,867,000 | -$13,559,494 | $10.64 | 55 |
| 2021 Q3 | 21,751,532 | $401,371,000 | +$401,371,000 | $18.47 | 49 |