NASDAQ:RPID

Rapid Micro Biosystems Stock Insider Trading

Healthcare > Medical - Devices

Buy RPID

*Your capital is at risk

$1.96

+0 (+0%)

At Close: Jun 03, 2026

Rapid Micro Biosystems Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 61.40. In total, the insiders bought 7.53M and sold 567.97K RPID shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	61.40
● Buy	7.53M shares
● Sell	567.97K shares
72% Buy Activity Weak Negative Correlation
Buy Signal Medium Confidence May 20, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 61.4. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 20, 2026 Buy	Series B Warrant (right to buy) P-Purchase	Bain Capital Life Sciences Investors, Llc 10 Percent Owner	10% Owner	1 463 000 Value: $3.42M
May 20, 2026 Buy	Series A Warrant (right to buy) P-Purchase	Bain Capital Life Sciences Investors, Llc 10 Percent Owner	10% Owner	1 463 000 Value: $2.86M
May 20, 2026 Buy	Pre-Funded Warrant (right to buy) P-Purchase	Bain Capital Life Sciences Investors, Llc 10 Percent Owner	10% Owner	1 463 000 Value: $14.6K
Mar 11, 2026 Sell	Class A Common Stock S-Sale	Wilson John J. Addington Chief Operating Officer	C-Suite Officer	9 603 Value: $41.5K
Mar 11, 2026 Sell	Class A Common Stock S-Sale	Wirtjes Sean M Chief Financial Officer	C-Suite Officer	7 480 Value: $32.3K
Mar 10, 2026 Sell	Class A Common Stock S-Sale	Spignesi Robert G. Jr. President And CEO	CEO / President	17 922 Value: $73.7K
Feb 27, 2026 Buy	Stock Option (Right to Buy) M-Exempt	Ricciardi Natale S Director	Director	842 Value: $632
Feb 27, 2026 Buy	Class A Common Stock M-Exempt	Ricciardi Natale S Director	Director	842 Value: $632
Feb 20, 2026 Sell	Class A Common Stock S-Sale	Wilson John J. Addington Chief Operating Officer	C-Suite Officer	5 403 Value: $21.2K
Feb 20, 2026 Sell	Class A Common Stock S-Sale	Wirtjes Sean M Chief Financial Officer	C-Suite Officer	17 254 Value: $67.7K
Feb 19, 2026 Sell	Class A Common Stock S-Sale	Spignesi Robert G. Jr. President And CEO	CEO / President	38 327 Value: $148.9K
Feb 11, 2026 Buy	Stock Option (Right to Buy) A-Award	Spignesi Robert G. Jr. President And CEO	CEO / President	528 000 Value: $2.22M
Feb 11, 2026 Buy	Class A Common Stock A-Award	Wirtjes Sean M Chief Financial Officer	C-Suite Officer	97 000 Value: $407.4K
Feb 11, 2026 Buy	Class A Common Stock A-Award	Wilson John J. Addington Chief Operating Officer	C-Suite Officer	74 000 Value: $310.8K
Feb 11, 2026 Buy	Stock Option (Right to Buy) A-Award	Wilson John J. Addington Chief Operating Officer	C-Suite Officer	147 000 Value: $617.4K
Feb 11, 2026 Buy	Stock Option (Right to Buy) A-Award	Wirtjes Sean M Chief Financial Officer	C-Suite Officer	193 000 Value: $810.6K
Feb 11, 2026 Buy	Class A Common Stock A-Award	Spignesi Robert G. Jr. President And CEO	CEO / President	264 000 Value: $1.11M
Feb 09, 2026 Sell	Class A Common Stock S-Sale	Wirtjes Sean M Chief Financial Officer	C-Suite Officer	6 027 Value: $22.8K
Feb 09, 2026 Sell	Class A Common Stock S-Sale	Wilson John J. Addington Chief Operating Officer	C-Suite Officer	4 610 Value: $17.4K
Feb 09, 2026 Sell	Class A Common Stock S-Sale	Spignesi Robert G. Jr. President And CEO	CEO / President	12 840 Value: $48.6K
Feb 04, 2026 Sell	Class A Common Stock S-Sale	Longitude Capital Partners Ii, Llc 10 Percent Owner	10% Owner	49 000 Value: $190.1K
Feb 03, 2026 Sell	Class A Common Stock S-Sale	Longitude Capital Partners Ii, Llc 10 Percent Owner	10% Owner	27 500 Value: $116.6K
Feb 02, 2026 Sell	Class A Common Stock S-Sale	Longitude Capital Partners Ii, Llc 10 Percent Owner	10% Owner	27 500 Value: $116.8K
Jan 30, 2026 Sell	Class A Common Stock S-Sale	Longitude Capital Partners Ii, Llc 10 Percent Owner	10% Owner	46 000 Value: $209.0K
Jan 23, 2026 Sell	Class A Common Stock S-Sale	Longitude Capital Partners Ii, Llc 10 Percent Owner	10% Owner	7 739 Value: $31.5K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT RAPID MICRO BIOSYSTEMS, INC.

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 North America, Europe, and Asia. The company offers Growth Direct platform, which includes Growth Direct system, proprietary consumables, lab information management system connection software, and comprehensive customer support and vali...

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