MetaCap

Rapid Micro Biosystems Insider Trades

NASDAQ: RPIDIndustrialsBiotechnology: Laboratory Analytical InstrumentsUSD

0.8935+0.0318 (+3.69%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
0 · $0
Sales
14 · $1.14M
Shares bought / sold
0 / 277.20K
Net activity
Net selling $1.1 million

Rapid Micro Biosystems insider activity

Over the last 12 months, Rapid Micro Biosystems insiders reported 37 transactions on SEC Form 4: 0 open-market purchases and 14 sales. Insiders bought $0 and sold $1.1 million worth of stock, for net insider selling of $1.1 million. The largest seller was Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet, with $473,859 in reported sales.

The most recent filing shows Kollender Richard S (Director) reporting a transaction in 1,681 shares at $0.75 on Jul 24, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put RPID's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

RPID insider transactions

Rapid Micro Biosystems insider transactions
DateInsiderTypeSharesValueFiling
Jul 24, 2026Kollender Richard SDirectorOption exercise1,827$1.37KForm 4
Jul 24, 2026Kollender Richard SDirectorOption exercise1,681$1.26KForm 4
Jul 22, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise1,402$1.05KForm 4
May 29, 2026Malloy KirkDirectorAward12,787$25.00KForm 4
May 29, 2026PEI MELINDA LITHERLANDDirectorAward12,787$25.00KForm 4
May 29, 2026LOWENSTEIN INESEDirectorAward12,787$25.00KForm 4
May 29, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOAward12,787$25.00KForm 4
May 29, 2026WIRTJES SEAN MCHIEF FINANCIAL OFFICERAward12,787$25.00KForm 4
May 21, 2026Bika DafniDirectorAward19,300—Form 4
May 21, 2026Kollender Richard SDirectorAward19,300—Form 4
May 21, 2026LOWENSTEIN INESEDirectorAward19,300—Form 4
May 21, 2026PEI MELINDA LITHERLANDDirectorAward19,300—Form 4
May 21, 2026Malloy KirkDirectorAward19,300—Form 4
Mar 11, 2026WIRTJES SEAN MCHIEF FINANCIAL OFFICERSale7,480$32.30KForm 4
Mar 11, 2026Wilson John J. AddingtonCHIEF OPERATING OFFICERSale9,603$41.47KForm 4
Mar 10, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOSale17,922$73.69KForm 4
Feb 27, 2026RICCIARDI NATALE SDirectorOption exercise842$631.50Form 4
Feb 20, 2026Wilson John J. AddingtonCHIEF OPERATING OFFICERSale5,403$21.20KForm 4
Feb 20, 2026WIRTJES SEAN MCHIEF FINANCIAL OFFICERSale17,254$67.69KForm 4
Feb 19, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOSale38,327$148.91KForm 4
Feb 11, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOAward264,000—Form 4
Feb 11, 2026WIRTJES SEAN MCHIEF FINANCIAL OFFICERAward97,000—Form 4
Feb 11, 2026Wilson John J. AddingtonCHIEF OPERATING OFFICERAward74,000—Form 4
Feb 9, 2026Wilson John J. AddingtonCHIEF OPERATING OFFICERSale4,610$17.44KForm 4
Feb 9, 2026Spignesi Robert G. Jr.PRESIDENT AND CEOSale12,840$48.57KForm 4
Feb 9, 2026WIRTJES SEAN MCHIEF FINANCIAL OFFICERSale6,027$22.80KForm 4
Feb 4, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & Longitude Prime Fund, L.P. & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerSale49,000$190.09KForm 4
Feb 3, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerSale27,500$116.64KForm 4
Feb 2, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerSale27,500$116.77KForm 4
Jan 30, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerSale46,000$209.00KForm 4
Jan 23, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerSale7,739$31.45KForm 4
Jan 23, 2026Longitude Capital Partners II, LLC & Longitude Venture Partners II, L.P. & Longitude Prime Partners, LLC & ENRIGHT PATRICK G & Tammenoms Bakker Juliet10% OwnerOption exercise629,032$31.45KForm 4
Nov 14, 2025Malloy KirkDirectorGift40,000—Form 4
Oct 17, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOTax withholding4,774$14.70KForm 4
Oct 17, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise7,833$5.87KForm 4
Oct 17, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOTax withholding2,072$6.38KForm 4
Oct 17, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise3,400$2.55KForm 4
Jul 14, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOSale11,881$39.48KForm 4
Jul 14, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise25,145—Form 4
Jul 11, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOSale11,874$39.50KForm 4
Jul 11, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise25,145—Form 4
Jul 10, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOSale11,617$39.47KForm 4
Jul 10, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise25,145—Form 4
Jul 9, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOSale11,247$39.48KForm 4
Jul 9, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise25,144—Form 4
Jul 8, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOSale10,824$38.02KForm 4
Jul 8, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOOption exercise25,144—Form 4
May 22, 2025RICCIARDI NATALE SDirectorAward14,300—Form 4
May 22, 2025Kollender Richard SDirectorAward14,300—Form 4
May 22, 2025PEI MELINDA LITHERLANDDirectorAward14,300—Form 4
May 22, 2025LOWENSTEIN INESEDirectorAward14,300—Form 4
May 22, 2025Malloy KirkDirectorAward14,300—Form 4
Mar 9, 2025Spignesi Robert G. Jr.PRESIDENT AND CEOTax withholding10,650$25.45KForm 4
Mar 9, 2025WIRTJES SEAN MCHIEF FINANCIAL OFFICERTax withholding7,690$18.38KForm 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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