How many institutions held RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 in Q4 2025?

42 institutional investors reported RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 for Q4 2025. Use the holders table for investor-level position and value details.

RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID)

Q: What does CUSIP 75340L104 represent in this 13F holders report?

CUSIP 75340L104 is the security identifier for RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 used to aggregate holder disclosures.

CUSIP: 75340L104

Q4 2025 13F Holders as of 31 Dec 2025

Type / Class: Equity / Common Stock, par value $0.01
Shares outstanding: 39,598,228
Total 13F shares: 14,620,290
Share change: -241,171
Total reported value: $42,504,363
Price per share: $2.90
Number of holders: 42
Value change: -$778,137
Number of buys: 24
Number of sells: 9

Quarterly Holders Quick Answers

What is CUSIP 75340L104?
CUSIP 75340L104 identifies RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 in SEC institutional holdings data.

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SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2026
Previous quarter: Q3 2025

Recent filing periods for CUSIP 75340L104:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of RPID - RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Bain Capital Life Sciences Investors, LLC	13F 3/4/5	Company · 10%+ Owner	21%	8,434,560	$28,171,430	—	30 Sep 2025	13F 3/4/5
KENNEDY LEWIS MANAGEMENT LP	3/4/5	10%+ Owner	— class O/S missing	2,904,490	$13,548,284	—	02 Jun 2022	3/4/5
Robert G. Spignesi Jr.	13D/G	SPIGNESI ROBERT G JR	6.3%	2,647,256	$9,133,033	$0	28 Mar 2024	13D/G
Jeffrey Lawrence Schwartz	3/4/5	Director, 10%+ Owner	— mixed-class rows	8,477,510 mixed-class rows	$8,288,331	—	23 May 2024	3/4/5
Endeavour Medtech Growth II LP	13D/G	—	5.7%	2,257,099	$6,545,587	$0	31 Dec 2025	13D/G
ABG-WTT Global Life Science Capital Partners GP Ltd	13F	Company	4.7%	1,848,296	$6,173,309	—	30 Sep 2025	13F
VANGUARD GROUP INC	13F	Company	2.4%	965,018	$3,223,160	—	30 Sep 2025	13F
Parkman Healthcare Partners LLC	13F	Company	2.3%	913,443	$3,050,900	—	30 Sep 2025	13F
Schonfeld Strategic Advisors LLC	13F	Company	1.6%	646,579	$2,159,572	—	30 Sep 2025	13F
ADVENT INTERNATIONAL, L.P.	13F	Company	1.5%	577,777	$1,929,775	—	30 Sep 2025	13F
BlackRock, Inc.	13F	Company	1.2%	483,871	$1,616,130	—	30 Sep 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.52%	204,687	$683,859	—	30 Sep 2025	13F
Evernest Financial Advisors, LLC	13F	Company	0.51%	200,234	$668,782	—	30 Sep 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.28%	110,187	$368,025	—	30 Sep 2025	13F
STATE STREET CORP	13F	Company	0.23%	91,474	$305,523	—	30 Sep 2025	13F
Gurinder Grewal	3/4/5	10%+ Owner	— class O/S missing	294,990	$291,863	—	19 Jul 2021	3/4/5
Richard S. Kollender	3/4/5	Director	— mixed-class rows	139,668 mixed-class rows	$260,892	—	22 May 2025	3/4/5
ESSEX INVESTMENT MANAGEMENT CO LLC	13F	Company	0.16%	62,326	$208,169	—	30 Sep 2025	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.15%	58,387	$195,013	—	30 Sep 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.14%	55,642	$185,725	—	30 Sep 2025	13F
Melinda Litherland Pei	3/4/5	Director	— mixed-class rows	97,250 mixed-class rows	$161,210	—	22 May 2025	3/4/5
NORTHERN TRUST CORP	13F	Company	0.12%	47,726	$159,405	—	30 Sep 2025	13F
Longitude Prime Partners, LLC	3/4/5	10%+ Owner	— class O/S missing	150,000	$148,410	—	19 Jul 2021	3/4/5
JANE STREET GROUP, LLC	13F	Company	0.1%	38,140	$127,388	—	30 Sep 2025	13F
Jonathan Paris	3/4/5	SVP, GENERAL COUNSEL	— mixed-class rows	325,398 mixed-class rows	$127,334	—	09 Mar 2023	3/4/5
Kirk Malloy	3/4/5	Director	— mixed-class rows	67,250 mixed-class rows	$113,870	—	14 Nov 2025	3/4/5
Victoria Vezina	3/4/5	CHIEF HUMAN RESOURCES OFFICER	— mixed-class rows	168,608 mixed-class rows	$110,468	—	11 Mar 2024	3/4/5
Inese Lowenstein	3/4/5	Director	— mixed-class rows	67,250 mixed-class rows	$90,710	—	22 May 2025	3/4/5
XTX Topco Ltd	13F	Company	0.06%	22,165	$74,031	—	30 Sep 2025	13F
MORGAN STANLEY	13F	Company	0.05%	20,550	$68,637	—	30 Sep 2025	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.04%	16,922	$56,519	—	30 Sep 2025	13F
Legato Capital Management LLC	13F	Company	0.04%	14,684	$49,045	—	30 Sep 2025	13F
Richard A. Keys	3/4/5	CHIEF COMMERCIAL OFFICER	— mixed-class rows	131,250 mixed-class rows	$43,286	—	11 Feb 2022	3/4/5
Hudson Bay Capital Management LP	13F	Company	0.03%	11,461	$38,280	—	30 Sep 2025	13F
David Hirsch	3/4/5	Director	— mixed-class rows	42,950 mixed-class rows	$14,028	—	23 May 2024	3/4/5
BNP PARIBAS FINANCIAL MARKETS	13F	Company	0.01%	3,626	$12,111	—	30 Sep 2025	13F
RESOURCES MANAGEMENT CORP /CT/ /ADV	13F	Company	0%	500	$2,000	—	30 Sep 2025	13F
OSAIC HOLDINGS, INC.	13F	Company	0%	300	$990	—	30 Sep 2025	13F
UBS Group AG	13F	Company	0%	290	$969	—	30 Sep 2025	13F
JPMORGAN CHASE & CO	13F	Company	0%	109	$364	—	30 Sep 2025	13F
SBI Securities Co., Ltd.	13F	Company	0%	17	$57	—	30 Sep 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0%	15	$50	—	30 Sep 2025	13F
CITIGROUP INC	13F	Company	0%	1	$3	—	30 Sep 2025	13F
Dafni Bika	3/4/5	Director	— class O/S missing	50,000	—	—	22 May 2025	3/4/5
Alexander Schmitz	3/4/5	Director	— class O/S missing	25,000	—	—	14 Jul 2021	3/4/5

Institutional Holders of RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) as of Q4 2025

As of 31 Dec 2025, RAPID MICRO BIOSYSTEMS, INC. - Common Stock, par value $0.01 (RPID) was held by 42 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 14,620,290 shares. The largest 10 holders included Bain Capital Life Sciences Investors, LLC, ABG-WTT Global Life Science Capital Partners GP Ltd, VANGUARD GROUP INC, Advent International, L.P., Parkman Healthcare Partners LLC, Schonfeld Strategic Advisors LLC, GEODE CAPITAL MANAGEMENT, LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, BlackRock, Inc., and CITADEL ADVISORS LLC. This page lists 42 institutional shareholders reporting positions in this security for the Q4 2025 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2025 vs Q3 2025 Across Filers

Q3 2025 holders

Q4 2025 holders

Holder diff

Investor	Q3 2025 Shares	Q4 2025 Shares	Share Diff	Share Chg %	Q3 2025 Value $	Q4 2025 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.