Quick Takeaways
- RPID - RAPID MICRO BIOSYSTEMS, INC. has 21 insiders with reported activity on this page.
- Net insider value flow over the last year: -$1,333,959.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 21 Insiders of RAPID MICRO BIOSYSTEMS, INC.
- Symbol
- RPID on Nasdaq
- Location
- Lexington, MA
What Changed
- Buy value: ; sell value: $1,333,959.
- Net share flow: -334,648.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$1,333,959.
Buys
$0
Shares: 0
Insiders: 0
Sells
$1,333,959
Shares: 334,648
Insiders: 4
Net
-$1,333,959
Shares: -334,648
Insiders: -4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 277,205 | $0 | $1,138,003 | -$1,138,003 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 11,881 | $0 | $39,481 | -$39,481 |
| 9-12 | 0 | 45,562 | $0 | $156,475 | -$156,475 |
RAPID MICRO BIOSYSTEMS, INC. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| KENNEDY LEWIS MANAGEMENT LP | 10%+ Owner | $13,548,284 | Filing P/S | 02 Jun 2022 | ||
| Longitude Capital Partners II, LLC | 10%+ Owner | $11,694,480 | -$663,949 | -5.4% | Median | 04 Feb 2026 |
| Bain Capital Life Sciences Investors, LLC | 10%+ Owner | $8,345,154 | Mixed | 19 Jul 2021 | ||
| Jeffrey Lawrence Schwartz | Director, 10%+ Owner | $8,288,331 | Mixed | 23 May 2024 | ||
| Robert G. Spignesi Jr. | PRESIDENT AND CEO, Director | $4,809,830 | -$467,124 | -8.9% | Filing P/S | 10 Mar 2026 |
| Sean M. Wirtjes | Chief Financial Officer | $2,401,701 | -$122,785 | -4.9% | Filing P/S | 11 Mar 2026 |
| John J. Addington Wilson | Chief Operating Officer | $1,367,809 | -$80,101 | -5.5% | Filing P/S | 11 Mar 2026 |
| Gurinder Grewal | 10%+ Owner | $291,863 | Mixed | 19 Jul 2021 | ||
| Richard S. Kollender | Director | $260,892 | Mixed | 22 May 2025 | ||
| Melinda Litherland Pei | Director | $161,210 | Mixed | 22 May 2025 | ||
| Longitude Prime Partners, LLC | 10%+ Owner | $148,410 | Mixed | 19 Jul 2021 | ||
| Jonathan Paris | Svp, General Counsel | $127,334 | Mixed | 09 Mar 2023 | ||
| Kirk Malloy | Director | $113,870 | Mixed | 14 Nov 2025 | ||
| Victoria Vezina | Chief Human Resources Officer | $110,468 | Mixed | 11 Mar 2024 | ||
| Inese Lowenstein | Director | $90,710 | Mixed | 22 May 2025 | ||
| Richard A. Keys | Chief Commercial Officer | $43,286 | Mixed | 11 Feb 2022 | ||
| Natale S. Ricciardi | Director | $22,081 | Mixed | 27 Feb 2026 | ||
| David Hirsch | Director | $14,028 | Mixed | 23 May 2024 | ||
| Michael Andrew Noyes | 10%+ Owner | Mixed | 14 Jul 2021 | |||
| Alexander Schmitz | Director | Mixed | 14 Jul 2021 | |||
| Dafni Bika | Director | Mixed | 22 May 2025 |
Top shareholders of RAPID MICRO BIOSYSTEMS, INC. (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
|
$24,460,224 | — | 31 Dec 2025 | |
| KENNEDY LEWIS MANAGEMENT LP |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
2,904,490
|
$13,548,284 | — | 02 Jun 2022 | |
| Longitude Capital Partners II, LLC |
3/4/5
|
10%+ Owner |
10%
|
4,029,245
|
$11,694,480 | -$663,949 | 04 Feb 2026 | |
| Robert G. Spignesi Jr. |
13D/G
3/4/5
|
SPIGNESI ROBERT G JR · PRESIDENT AND CEO, Director |
6.3%
|
2,647,256
|
$9,133,033 | $0 | 28 Mar 2024 | |
| Jeffrey Lawrence Schwartz |
3/4/5
|
Director, 10%+ Owner |
—
mixed-class rows
|
8,477,510
mixed-class rows
|
$8,288,331 | — | 23 May 2024 | |
| Endeavour Medtech Growth II LP |
13D/G
|
— |
5.7%
|
2,257,099
|
$6,545,587 | $0 | 31 Dec 2025 | |
| ABG-WTT Global Life Science Capital Partners GP Ltd |
13F
|
Company |
4.7%
|
1,848,296
|
$5,360,058 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.5%
|
978,781
|
$2,838,465 | — | 31 Dec 2025 | |
| Sean M. Wirtjes |
3/4/5
|
CHIEF FINANCIAL OFFICER |
—
mixed-class rows
|
749,194
mixed-class rows
|
$2,401,701 | -$122,785 | 11 Mar 2026 | |
| ADVENT INTERNATIONAL, L.P. |
13F
|
Company |
1.5%
|
577,777
|
$1,675,553 | — | 31 Dec 2025 | |
| John J. Addington Wilson |
3/4/5
|
CHIEF OPERATING OFFICER |
—
mixed-class rows
|
463,762
mixed-class rows
|
$1,367,809 | -$80,101 | 11 Mar 2026 | |
| Parkman Healthcare Partners LLC |
13F
|
Company |
0.9%
|
354,465
|
$1,027,949 | — | 31 Dec 2025 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.89%
|
352,433
|
$1,022,055 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.55%
|
217,568
|
$631,116 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.43%
|
172,235
|
$499,482 | — | 31 Dec 2025 | |
| Evernest Financial Advisors, LLC |
13F
|
Company |
0.32%
|
125,000
|
$468,750 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.4%
|
156,666
|
$454,332 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.32%
|
126,539
|
$366,963 | — | 31 Dec 2025 | |
| 683 Capital Management, LLC |
13F
|
Company |
0.3%
|
120,773
|
$350,242 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.29%
|
116,502
|
$337,856 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.29%
|
115,627
|
$335,318 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.27%
|
105,301
|
$305,372 | — | 31 Dec 2025 | |
| Gurinder Grewal |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
294,990
|
$291,863 | — | 19 Jul 2021 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.24%
|
93,616
|
$271,486 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.23%
|
91,474
|
$265,275 | — | 31 Dec 2025 | |
| Richard S. Kollender |
3/4/5
|
Director |
—
mixed-class rows
|
139,668
mixed-class rows
|
$260,892 | — | 22 May 2025 | |
| Informed Momentum Co LLC |
13F
|
Company |
0.19%
|
77,182
|
$223,828 | — | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.16%
|
62,911
|
$182,443 | — | 31 Dec 2025 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.16%
|
62,326
|
$180,745 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.14%
|
56,182
|
$162,481 | — | 31 Dec 2025 | |
| Melinda Litherland Pei |
3/4/5
|
Director |
—
mixed-class rows
|
97,250
mixed-class rows
|
$161,210 | — | 22 May 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.14%
|
55,306
|
$160,387 | — | 31 Dec 2025 | |
| Longitude Prime Partners, LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
150,000
|
$148,410 | — | 19 Jul 2021 | |
| Jonathan Paris |
3/4/5
|
SVP, GENERAL COUNSEL |
—
mixed-class rows
|
325,398
mixed-class rows
|
$127,334 | — | 09 Mar 2023 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.1%
|
40,487
|
$117,412 | — | 31 Dec 2025 | |
| Kirk Malloy |
3/4/5
|
Director |
—
mixed-class rows
|
67,250
mixed-class rows
|
$113,870 | — | 14 Nov 2025 | |
| Victoria Vezina |
3/4/5
|
CHIEF HUMAN RESOURCES OFFICER |
—
mixed-class rows
|
168,608
mixed-class rows
|
$110,468 | — | 11 Mar 2024 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.08%
|
33,099
|
$95,987 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.08%
|
31,389
|
$91,028 | — | 31 Dec 2025 | |
| Inese Lowenstein |
3/4/5
|
Director |
—
mixed-class rows
|
67,250
mixed-class rows
|
$90,710 | — | 22 May 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.08%
|
30,367
|
$88,064 | — | 31 Dec 2025 | |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P |
13F
|
Company |
0.06%
|
25,000
|
$72,500 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.06%
|
24,859
|
$72,091 | — | 31 Dec 2025 | |
| OMERS ADMINISTRATION Corp |
13F
|
Company |
0.06%
|
24,400
|
$70,760 | — | 31 Dec 2025 | |
| FIFTH LANE CAPITAL, LP |
13F
|
Company |
0.04%
|
17,700
|
$51,330 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.04%
|
16,922
|
$49,074 | — | 31 Dec 2025 | |
| Lighthouse Investment Partners, LLC |
13F
|
Company |
0.04%
|
15,720
|
$45,588 | — | 31 Dec 2025 | |
| Richard A. Keys |
3/4/5
|
CHIEF COMMERCIAL OFFICER |
—
mixed-class rows
|
131,250
mixed-class rows
|
$43,286 | — | 11 Feb 2022 | |
| Legato Capital Management LLC |
13F
|
Company |
0.04%
|
14,684
|
$42,584 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.04%
|
14,300
|
$41,470 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for RAPID MICRO BIOSYSTEMS, INC.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John J. Addington Wilson | RPID | Class A Common Stock | Sale | -2.94% | $41,467 | $4.32 | -9,603 | 316,762 | 11 Mar 2026 | Direct |
| Sean M. Wirtjes | RPID | Class A Common Stock | Sale | -1.33% | $32,299 | $4.32 | -7,480 | 556,194 | 11 Mar 2026 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.51% | $73,686 | $4.11 | -17,922 | 1,169,848 | 10 Mar 2026 | Direct |
| Natale S. Ricciardi | RPID | Class A Common Stock | Options Exercise | 2.94% | 842 | 29,442 | 27 Feb 2026 | Direct | ||
| Natale S. Ricciardi | RPID | Stock Option (Right to Buy) | Options Exercise | -100% | -842 | 0 | 27 Feb 2026 | Direct | ||
| John J. Addington Wilson | RPID | Class A Common Stock | Sale | -1.63% | $21,196 | $3.92 | -5,403 | 326,365 | 20 Feb 2026 | Direct |
| Sean M. Wirtjes | RPID | Class A Common Stock | Sale | -2.97% | $67,687 | $3.92 | -17,254 | 563,674 | 20 Feb 2026 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -3.13% | $148,912 | $3.89 | -38,327 | 1,187,770 | 19 Feb 2026 | Direct |
| John J. Addington Wilson | RPID | Class A Common Stock | Award | 28.7% | 74,000 | 331,768 | 11 Feb 2026 | Direct | ||
| John J. Addington Wilson | RPID | Stock Option (Right to Buy) | Award | 147,000 | 147,000 | 11 Feb 2026 | Direct | |||
| Sean M. Wirtjes | RPID | Class A Common Stock | Award | 20% | 97,000 | 580,928 | 11 Feb 2026 | Direct | ||
| Sean M. Wirtjes | RPID | Stock Option (Right to Buy) | Award | 193,000 | 193,000 | 11 Feb 2026 | Direct | |||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Award | 27.4% | 264,000 | 1,226,097 | 11 Feb 2026 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Stock Option (Right to Buy) | Award | 528,000 | 528,000 | 11 Feb 2026 | Direct | |||
| John J. Addington Wilson | RPID | Class A Common Stock | Sale | -1.76% | $17,438 | $3.78 | -4,610 | 257,768 | 09 Feb 2026 | Direct |
| Sean M. Wirtjes | RPID | Class A Common Stock | Sale | -1.23% | $22,798 | $3.78 | -6,027 | 483,928 | 09 Feb 2026 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.32% | $48,570 | $3.78 | -12,840 | 962,097 | 09 Feb 2026 | Direct |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Sale | -100% | $190,091 | $3.88 | -49,000 | 0 | 04 Feb 2026 | Held by Longitude Prime Fund, L.P. |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Sale | -36% | $116,641 | $4.24 | -27,500 | 49,000 | 03 Feb 2026 | Held by Longitude Prime Fund, L.P. |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Sale | -26.4% | $116,765 | $4.25 | -27,500 | 76,500 | 02 Feb 2026 | Held by Longitude Prime Fund, L.P. |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Sale | -30.7% | $209,001 | $4.54 | -46,000 | 104,000 | 30 Jan 2026 | Held by Longitude Prime Fund, L.P. |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Sale | -0.19% | $31,451 | $4.06 | -7,739 | 4,029,245 | 23 Jan 2026 | Held by Longitude Venture Partners II, L.P. |
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Exercise of in-the-money or at-the-money derivative security | 18.5% | 629,032 | 4,036,984 | 23 Jan 2026 | Held by Longitude Venture Partners II, L.P. | ||
| Longitude Capital Partners II, LLC | RPID | Class A Common Stock | Exercise of in-the-money or at-the-money derivative security | -100% | -629,032 | 0 | 23 Jan 2026 | Held by Longitude Venture Partners II, L.P. | ||
| Kirk Malloy | RPID | Class A Common Stock | Gift | -58.3% | -40,000 | 28,600 | 14 Nov 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Tax liability | -0.7% | -6,846 | 971,878 | 17 Oct 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 1.16% | 11,233 | 979,711 | 17 Oct 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Stock Option (Right to Buy) | Options Exercise | -100% | -11,233 | 0 | 17 Oct 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.21% | $39,481 | $3.32 | -11,881 | 970,550 | 14 Jul 2025 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 2.63% | 25,145 | 982,431 | 14 Jul 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.23% | $39,499 | $3.33 | -11,874 | 957,286 | 11 Jul 2025 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 2.66% | 25,145 | 969,160 | 11 Jul 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.22% | $39,475 | $3.40 | -11,617 | 944,015 | 10 Jul 2025 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 2.79% | 25,145 | 925,728 | 10 Jul 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.23% | $39,480 | $3.51 | -11,247 | 900,583 | 09 Jul 2025 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 2.84% | 25,144 | 911,830 | 09 Jul 2025 | Direct | ||
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Sale | -1.21% | $38,021 | $3.51 | -10,824 | 886,686 | 08 Jul 2025 | Direct |
| Robert G. Spignesi Jr. | RPID | Class A Common Stock | Options Exercise | 2.88% | 25,144 | 897,510 | 08 Jul 2025 | Direct | ||
| Dafni Bika | RPID | Stock Option (Right to Buy) | Award | 50,000 | 50,000 | 22 May 2025 | Direct | |||
| Inese Lowenstein | RPID | Class A Common Stock | Award | 58.8% | 14,300 | 38,600 | 22 May 2025 | Direct | ||
| Inese Lowenstein | RPID | Stock Option (Right to Buy) | Award | 28,650 | 28,650 | 22 May 2025 | Direct | |||
| Melinda Litherland Pei | RPID | Class A Common Stock | Award | 26.3% | 14,300 | 68,600 | 22 May 2025 | Direct | ||
| Melinda Litherland Pei | RPID | Stock Option (Right to Buy) | Award | 28,650 | 28,650 | 22 May 2025 | Direct | |||
| Richard S. Kollender | RPID | Class A Common Stock | Award | 14.8% | 14,300 | 111,018 | 22 May 2025 | Direct | ||
| Richard S. Kollender | RPID | Stock Option (Right to Buy) | Award | 28,650 | 28,650 | 22 May 2025 | Direct | |||
| Kirk Malloy | RPID | Class A Common Stock | Award | 22.2% | 14,300 | 78,600 | 22 May 2025 | Direct | ||
| Kirk Malloy | RPID | Stock Option (Right to Buy) | Award | 28,650 | 28,650 | 22 May 2025 | Direct | |||
| Natale S. Ricciardi | RPID | Class A Common Stock | Award | 100% | 14,300 | 28,600 | 22 May 2025 | Direct | ||
| Natale S. Ricciardi | RPID | Stock Option (Right to Buy) | Award | 28,650 | 28,650 | 22 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.