RPID
Rapid Micro Biosystems, Inc.$1.77-0.10 (-5.59%)Prev Close$1.88·MCap$186.2M·P/E—·Vol116.2K·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
14
$1.57M
◆
Net Activity
Net Seller
$1.57M
●
Active Insiders
4
last 12 mo
Over the past 12 months, insider activity at Rapid Micro Biosystems, Inc. (RPID) has been exclusively selling, with 0 insider purchases totaling $0.00 and 14 insider sales totaling $1.57M. The most recent insider transaction was by Spignesi Robert G. Jr. (director, officer: PRESIDENT AND CEO), who sold $73.7K worth of shares on Mar 12, 2026. Rapid Micro Biosystems, Inc. operates in the Healthcare sector, within the Medical - Devices industry, with a market cap of $186.2M.
RPID Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Mar 12, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 17,922 | $4.11 | $73.7K | 1,169,848 |
| Mar 12, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 9,603 | $4.32 | $41.5K | 316,762 |
| Mar 12, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 7,480 | $4.32 | $32.3K | 556,194 |
| Feb 20, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 38,327 | $3.89 | $148.9K | 1,187,770 |
| Feb 20, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 10,806 | $3.92 | $42.4K | 326,365 |
| Feb 20, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 34,508 | $3.92 | $135.4K | 563,674 |
| Feb 19, 2026 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 38,327 | $3.89 | $148.9K | 0 |
| Feb 10, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 12,840 | $3.78 | $48.6K | 962,097 |
| Feb 10, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 4,610 | $3.78 | $17.4K | 257,768 |
| Feb 10, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 6,027 | $3.78 | $22.8K | 483,928 |
| Feb 6, 2026 | Longitude Capital Partners II, LLC | 10 percent owner | Sell | 49,000 | $3.88 | $190.1K | 0Exit |
| Feb 3, 2026 | Longitude Capital Partners II, LLC | 10 percent owner | Sell | 108,739 | $4.36 | $473.9K | 4,029,245 |
| Jul 15, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 23,755 | $3.32 | $79.0K | 970,550 |
| Jul 10, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 33,688 | $3.47 | $117.0K | 944,015 |
| Dec 5, 2024 | PEI MELINDA LITHERLAND | Director | Buy | 20,000 | $1.02 | $20.4K | 54,300+58% |
| Nov 27, 2024 | PEI MELINDA LITHERLAND | Director | Buy | 20,000 | $1.05 | $21.0K | 34,300+140% |
| Aug 9, 2024 | Malloy Kirk | Director | Buy | 50,000 | $0.91 | $45.3K | 64,300+350% |
| Aug 8, 2024 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 10,000 | $0.78 | $7.8K | 348,157 |
| Aug 7, 2024 | Kollender Richard S | Director | Buy | 65,000 | $0.77 | $50.1K | 96,718+205% |
| Aug 7, 2024 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 50,000 | $0.77 | $38.4K | 540,012 |
| Sep 8, 2023 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 10,000 | $0.99 | $9.9K | 285,651 |
| Aug 16, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 20,000 | $0.97 | $19.5K | 375,512 |
| Aug 10, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 34,000 | $0.92 | $31.4K | 355,512 |
| May 18, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 20,000 | $0.91 | $18.2K | 321,512 |
| Jun 6, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 60,100 | $4.72 | $283.6K | 2,904,490 |
| Jun 1, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 68,617 | $4.87 | $334.4K | 2,869,154 |
| May 26, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 49,883 | $4.59 | $228.9K | 2,828,810 |
| May 19, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 96,516 | $4.08 | $393.8K | 2,799,481 |
| May 18, 2022 | Spignesi Robert G. Jr. | President and CEO | Buy | 10,000 | $3.80 | $38.0K | 194,027 |
| Mar 14, 2022 | LOWENSTEIN INESE | Director | Buy | 10,000 | $6.95 | $69.5K | 10,000 |
| Jul 21, 2021 | Bain Capital Life Sciences Investors, LLC | 10% Owner | Buy | 100,000 | $20.00 | $2.00M | 8,434,560 |
| Jul 20, 2021 | Longitude Capital Partners II, LLC | 10% Owner | Buy | 150,000 | $20.00 | $3.00M | 150,000 |
RPID Insider Buying Activity
The following table shows recent insider purchases of Rapid Micro Biosystems, Inc. (RPID) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 5, 2024 | PEI MELINDA LITHERLAND | Director | Buy | 20,000 | $1.02 | $20.4K | 54,300+58% |
| Nov 27, 2024 | PEI MELINDA LITHERLAND | Director | Buy | 20,000 | $1.05 | $21.0K | 34,300+140% |
| Aug 9, 2024 | Malloy Kirk | Director | Buy | 50,000 | $0.91 | $45.3K | 64,300+350% |
| Aug 8, 2024 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 10,000 | $0.78 | $7.8K | 348,157 |
| Aug 7, 2024 | Kollender Richard S | Director | Buy | 65,000 | $0.77 | $50.1K | 96,718+205% |
| Aug 7, 2024 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 50,000 | $0.77 | $38.4K | 540,012 |
| Sep 8, 2023 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 10,000 | $0.99 | $9.9K | 285,651 |
| Aug 16, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 20,000 | $0.97 | $19.5K | 375,512 |
| Aug 10, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 34,000 | $0.92 | $31.4K | 355,512 |
| May 18, 2023 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 20,000 | $0.91 | $18.2K | 321,512 |
| Jun 6, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 60,100 | $4.72 | $283.6K | 2,904,490 |
| Jun 1, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 68,617 | $4.87 | $334.4K | 2,869,154 |
| May 26, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 49,883 | $4.59 | $228.9K | 2,828,810 |
| May 19, 2022 | KENNEDY LEWIS MANAGEMENT LP | 10% Owner | Buy | 96,516 | $4.08 | $393.8K | 2,799,481 |
| May 18, 2022 | Spignesi Robert G. Jr. | President and CEO | Buy | 10,000 | $3.80 | $38.0K | 194,027 |
| Mar 14, 2022 | LOWENSTEIN INESE | Director | Buy | 10,000 | $6.95 | $69.5K | 10,000 |
| Jul 21, 2021 | Bain Capital Life Sciences Investors, LLC | 10% Owner | Buy | 100,000 | $20.00 | $2.00M | 8,434,560 |
| Jul 20, 2021 | Longitude Capital Partners II, LLC | 10% Owner | Buy | 150,000 | $20.00 | $3.00M | 150,000 |
RPID Insider Selling Activity
The following table shows recent insider sales of Rapid Micro Biosystems, Inc. (RPID) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Mar 12, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 17,922 | $4.11 | $73.7K | 1,169,848 |
| Mar 12, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 9,603 | $4.32 | $41.5K | 316,762 |
| Mar 12, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 7,480 | $4.32 | $32.3K | 556,194 |
| Feb 20, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 38,327 | $3.89 | $148.9K | 1,187,770 |
| Feb 20, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 10,806 | $3.92 | $42.4K | 326,365 |
| Feb 20, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 34,508 | $3.92 | $135.4K | 563,674 |
| Feb 19, 2026 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 38,327 | $3.89 | $148.9K | 0 |
| Feb 10, 2026 | Spignesi Robert G. Jr. | director, officer: PRESIDENT AND CEO | Sell | 12,840 | $3.78 | $48.6K | 962,097 |
| Feb 10, 2026 | Wilson John J. Addington | officer: CHIEF OPERATING OFFICER | Sell | 4,610 | $3.78 | $17.4K | 257,768 |
| Feb 10, 2026 | WIRTJES SEAN M | officer: CHIEF FINANCIAL OFFICER | Sell | 6,027 | $3.78 | $22.8K | 483,928 |
| Feb 6, 2026 | Longitude Capital Partners II, LLC | 10 percent owner | Sell | 49,000 | $3.88 | $190.1K | 0Exit |
| Feb 3, 2026 | Longitude Capital Partners II, LLC | 10 percent owner | Sell | 108,739 | $4.36 | $473.9K | 4,029,245 |
| Jul 15, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 23,755 | $3.32 | $79.0K | 970,550 |
| Jul 10, 2025 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 33,688 | $3.47 | $117.0K | 944,015 |
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