Latest Period
Q4 2025
Security Snapshot
RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) Institutional Ownership
CUSIP: 75340L104
13F Institutional Holders and Ownership History from Q3 2021 to Q1 2026
Institutions Reporting
42
Shares (Excl. Options)
14,620,290
Price
$2.90
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- Type / Class
- Equity / Common Stock, par value $0.01
- Symbol
- RPID on Nasdaq
- Shares outstanding
- 39,598,228
- Price per share
- $2.27
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 14,620,290
- Total reported value
- $42,504,363
- % of total 13F portfolios
- 0%
- Share change
- -241,171
- Value change
- -$778,137
- Number of holders
- 42
- Price from insider filings
- $2.27
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 is tracked under CUSIP 75340L104.
- 42 institutions reported positions in Q4 2025.
- 2 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 42 to 3 between Q4 2025 and Q1 2026.
- Reported value moved from $42,504,363 to $1,046,300.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 42 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 75340L104?
CUSIP 75340L104 identifies RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 75340L104:
Significant Owners of RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) based on Schedule 13D/G filings
| 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.
Top 25 Institutional Shareholders
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 |
Institutional Holders of RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 443,777 | $1,046,300 | +$751,173 | $2.27 | 3 |
| 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 |