RPID Insider Trading

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About

Insider Ownership Percentage: 29.96%

Insider Buying (Last 12 Months): $9,484.80

Insider Selling (Last 12 Months): $195,952.35

Rapid Micro Biosystems Insider Trading History Chart

Rapid Micro Biosystems Share Price & Price History

^$4.03

▲ +0.03 (0.75%)

As of 12/4/2025 05:00 PM ET

Days: 30 | 90 | 365

Rapid Micro Biosystems Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
7/14/2025	Robert G Jr. Spignesi	CEO	Sell	11,881	$3.32	$39,444.92	970,550
7/11/2025	Robert G Jr. Spignesi	CEO	Sell	11,874	$3.33	$39,540.42	957,286
7/10/2025	Robert G Jr. Spignesi	CEO	Sell	11,617	$3.40	$39,497.80	944,015
7/9/2025	Robert G Jr. Spignesi	CEO	Sell	11,247	$3.51	$39,476.97	900,583
7/8/2025	Robert G Jr. Spignesi	CEO	Sell	10,824	$3.51	$37,992.24	886,686
12/5/2024	Melinda Litherland Pei	Director	Buy	9,120	$1.04	$9,484.80	54,300
12/3/2024	Melinda Litherland Pei	Director	Buy	10,880	$1.00	$10,880.00	45,180
11/26/2024	Melinda Litherland Pei	Director	Buy	108	$1.04	$112.32	14,408
8/8/2024	Kirk Malloy	Director	Buy	50,000	$0.91	$45,500.00	64,300
8/7/2024	Sean M Wirtjes	CFO	Buy	10,000	$0.78	$7,800.00	348,157
8/6/2024	Richard S Kollender	Director	Buy	65,000	$0.77	$50,050.00	96,718
8/6/2024	Robert G Jr. Spignesi	CEO	Buy	50,000	$0.77	$38,500.00	540,012
9/6/2023	Sean M Wirtjes	CFO	Buy	10,000	$0.99	$9,900.00	285,651
8/15/2023	Robert G Jr. Spignesi	CEO	Buy	20,000	$0.97	$19,400.00	375,512
5/17/2023	Robert G Jr. Spignesi	CEO	Buy	20,000	$0.91	$18,200.00	321,512

SEC Filings (Institutional Ownership Changes) for Rapid Micro Biosystems (NASDAQ:RPID)

52.60% of Rapid Micro Biosystems stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Rapid Micro Biosystems Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
11/17/2025	Susquehanna International Group LLP	58,387	$0.20M	0.0%	+12.6%	0.132%
11/14/2025	Schonfeld Strategic Advisors LLC	646,579	$2.16M	0.0%	-37.7%	1.459%
11/12/2025	Dimensional Fund Advisors LP	55,642	$0.19M	0.0%	+37.8%	0.126%
11/12/2025	Evernest Financial Advisors LLC	200,234	$0.67M	0.2%	+355.1%	0.453%
11/7/2025	Vanguard Group Inc.	965,018	$3.22M	0.0%	+6.7%	2.183%
8/12/2025	XTX Topco Ltd	41,800	$0.14M	0.0%	N/A	0.095%
8/12/2025	American Century Companies Inc.	16,922	$58K	0.0%	+46.1%	0.039%
8/8/2025	Geode Capital Management LLC	204,079	$0.70M	0.0%	+1.6%	0.466%
7/28/2025	Evernest Financial Advisors LLC	44,000	$0.15M	0.0%	-66.5%	0.100%
5/16/2025	Parkman Healthcare Partners LLC	735,621	$1.94M	0.2%	N/A	1.701%
5/16/2025	ABG WTT Global Life Science Capital Partners GP Ltd	1,848,296	$4.88M	12.7%	+78.0%	4.275%
5/15/2025	OMERS ADMINISTRATION Corp	109,400	$0.29M	0.0%	N/A	0.253%
5/13/2025	American Century Companies Inc.	11,581	$31K	0.0%	N/A	0.027%
5/13/2025	Informed Momentum Co LLC	176,949	$0.47M	0.1%	N/A	0.409%
5/12/2025	Evernest Financial Advisors LLC	131,265	$0.35M	0.1%	N/A	0.304%
5/7/2025	Essex Investment Management Co. LLC	63,057	$0.17M	0.0%	N/A	0.146%
5/6/2025	Legato Capital Management LLC	15,415	$41K	0.0%	N/A	0.036%
2/17/2025	Millennium Management LLC	61,375	$55K	0.0%	+17.6%	0.143%
2/17/2025	Citadel Advisors LLC	72,024	$65K	0.0%	N/A	0.167%
2/13/2025	Renaissance Technologies LLC	183,087	$0.17M	0.0%	+122.9%	0.425%
12/26/2024	JPMorgan Chase & Co.	321,330	$0.29M	0.0%	-44.0%	0.747%
5/12/2023	Rhenman & Partners Asset Management AB	127,152	$0.17M	0.0%	-57.6%	0.301%
5/11/2023	Resources Management Corp CT ADV	50,029	$4.65M	0.7%	+9,905.8%	0.119%
2/15/2023	Glenview Capital Management LLC	810,391	$0.92M	0.0%	+8.1%	1.930%
2/7/2023	TD Asset Management Inc	117,184	$0.13M	0.0%	-12.4%	0.279%
11/15/2022	Parian Global Management LP	40,000	$0.13M	0.4%	N/A	0.095%
11/14/2022	Tudor Investment Corp Et Al	10,760	$35K	0.0%	N/A	0.026%
11/14/2022	Boothbay Fund Management LLC	10,073	$33K	0.0%	-46.3%	0.024%
11/3/2022	Royce & Associates LP	17,900	$58K	0.0%	N/A	0.043%
11/3/2022	Valmark Advisers Inc.	11,101	$36K	0.0%	N/A	0.026%
11/2/2022	Arena Investors LP	190,047	$0.61M	0.3%	-19.1%	0.453%
8/12/2022	Glenview Capital Management LLC	750,000	$3.23M	0.1%	+12.6%	1.788%
7/28/2022	Hamilton Lane Advisors LLC	97,916	$0.42M	0.2%	N/A	0.233%
7/8/2022	Industry Ventures L.L.C.	287,502	$1.24M	1.3%	N/A	0.686%
5/16/2022	Glenview Capital Management LLC	665,807	$4.52M	0.1%	N/A	1.588%
5/16/2022	ABG WTT Global Life Science Capital Partners GP Ltd	1,038,296	$7.05M	57.2%	N/A	2.476%
5/16/2022	Ally Bridge Group NY LLC	699,664	$4.75M	3.5%	+59.8%	1.668%
5/10/2022	TD Asset Management Inc.	133,814	$0.91M	0.0%	+61.1%	0.319%
2/25/2022	EDBI Pte Ltd	24,515	$0.26M	0.1%	N/A	0.059%
2/15/2022	Cinctive Capital Management LP	25,178	$0.27M	0.0%	N/A	0.061%
2/15/2022	Adage Capital Partners GP L.L.C.	581,243	$6.18M	0.0%	-18.9%	1.406%
2/14/2022	Perceptive Advisors LLC	385,693	$4.10M	0.1%	+10.2%	0.933%
2/10/2022	JPMorgan Chase & Co.	1,785,773	$19M	0.0%	+6.0%	4.318%
2/10/2022	Panagora Asset Management Inc.	19,690	$0.21M	0.0%	N/A	0.048%
2/10/2022	TD Asset Management Inc.	83,074	$0.88M	0.0%	+71.9%	0.201%
2/8/2022	Northern Trust Corp	80,764	$0.86M	0.0%	+13.1%	0.195%
2/7/2022	Mitsubishi UFJ Kokusai Asset Management Co. Ltd.	34,583	$0.38M	0.0%	N/A	0.084%
2/2/2022	New York State Common Retirement Fund	6,093	$65K	0.0%	N/A	0.015%
1/28/2022	Allspring Global Investments Holdings LLC	3,272	$34K	0.0%	N/A	0.008%
12/3/2021	Perceptive Advisors LLC	350,000	$6.47M	0.1%	N/A	0.846%
12/1/2021	Balyasny Asset Management LLC	62,841	$1.16M	0.0%	N/A	0.152%
11/16/2021	Janus Henderson Group PLC	28,870	$0.54M	0.0%	N/A	0.070%
11/16/2021	Bain Capital Life Sciences Investors LLC	8,434,560	$155.79M	9.7%	N/A	20.531%
11/15/2021	Pura Vida Investments LLC	332,136	$6.14M	0.2%	N/A	0.808%
11/15/2021	Balyasny Asset Management LLC	62,841	$1.16M	0.0%	N/A	0.153%
11/15/2021	Sectoral Asset Management Inc	510,835	$9.44M	0.8%	N/A	1.243%
11/15/2021	Caas Capital Management LP	239,727	$4.43M	0.1%	N/A	0.584%
11/12/2021	Ghisallo Capital Management LLC	50,000	$0.92M	0.0%	N/A	0.122%
11/12/2021	Geode Capital Management LLC	97,756	$1.81M	0.0%	N/A	0.238%
11/12/2021	Magnetar Financial LLC	41,373	$0.76M	0.0%	N/A	0.101%
11/10/2021	Goldman Sachs Group Inc.	133,513	$2.47M	0.0%	N/A	0.325%
11/9/2021	BlackRock Inc.	1,360,027	$25.12M	0.0%	N/A	3.311%
11/9/2021	Jennison Associates LLC	123,605	$2.28M	0.0%	N/A	0.301%
11/9/2021	TD Asset Management Inc.	48,316	$0.89M	0.0%	N/A	0.118%
11/4/2021	Deutsche Bank AG	4,602	$85K	0.0%	N/A	0.011%
10/25/2021	KPCB XIII Associates LLC	32,400	$0.60M	0.1%	N/A	0.079%

Data available starting January 2016

Rapid Micro Biosystems, Inc., a life sciences technology company, provides products for the detection of microbial contamination in the manufacture of pharmaceutical, medical devices, and personal care products in the United States, Germany, Switzerland, Japan, and internationally. The company offers Growth Direct platform, which includes Growth Direct system, proprietary consumables, lab information management system connection software, and customer support and validation services. Its platform automates and modernizes the manual microbial quality control (MQC) testing workflows for therapeutic modalities, such as biologics, vaccines, cell and gene therapies, and sterile injectables. The company also provides onsite technical training services. Its solutions are used in environmental monitoring, water, bioburden, and sterility release testing applications. In addition, the company offers RMBNucleus software for the Growth Direct system; RMBNucleus Mold Alarm signals at the first sign of mold detection; RMBNucleus Central Manager portal streamlines coordination of multiple instruments; and Growth Direct LIMS connection software. Rapid Micro Biosystems, Inc. was formerly known as Genomic Profiling Systems, Inc. and changed its name to Rapid Micro Biosystems, Inc. in January 2007. The company was incorporated in 2006 and is headquartered in Lowell, Massachusetts.

Today's Range

Now: $4.03

$4.00

$4.20

50 Day Range

MA: $3.51

$2.70

$4.46

52 Week Range

Now: $4.03

$0.87

$4.50

Volume

103,156 shs

Average Volume

116,059 shs

Market Capitalization

$178.61 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.33

Who are the company insiders with the largest holdings of Rapid Micro Biosystems?: Rapid Micro Biosystems' top insider shareholders include:
Robert G Jr Spignesi (CEO)
Sean M Wirtjes (CFO)
Richard S Kollender (Director)
Kirk Malloy (Director)
Melinda Litherland Pei (Director)
Learn More about top insider investors at Rapid Micro Biosystems.
Who are the major institutional investors of Rapid Micro Biosystems?: Rapid Micro Biosystems' top institutional shareholders include:
Vanguard Group Inc. — 2.18%
Schonfeld Strategic Advisors LLC — 1.46%
Evernest Financial Advisors LLC — 0.45%
Susquehanna International Group LLP — 0.13%
Dimensional Fund Advisors LP — 0.13%
Learn More about top institutional investors of Rapid Micro Biosystems stock.
Which institutional investors are selling Rapid Micro Biosystems stock?: Within the previous quarter, RPID stock was sold by these institutional investors:
Schonfeld Strategic Advisors LLC
Which institutional investors are buying Rapid Micro Biosystems stock?: In the previous quarter, RPID stock was purchased by institutional investors including:
Evernest Financial Advisors LLC
Vanguard Group Inc.
Dimensional Fund Advisors LP
Susquehanna International Group LLP
In the last year, these company insiders have bought Rapid Micro Biosystems stock:
Robert G Jr Spignesi (CEO)
Sean M Wirtjes (CFO)
Richard S Kollender (Director)
Kirk Malloy (Director)
Melinda Litherland Pei (Director)
Learn More investors buying Rapid Micro Biosystems stock.