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Nasdaq · CIK 0001380106

RPID RAPID MICRO BIOSYSTEMS, INC.

Insider trading from SEC Form 4. Last filing May 26, 2026. Close $0.89 on Oct 9, 2026, +4% from the 52-week low and -81% from the high.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
11
with a Form 4 at this company

Price and insider trades, last year

RPIDOct 9, 2026 · close 0.89

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at RAPID MICRO BIOSYSTEMS, INC., scored.

ScoreInsiderValueHoldingsPrice contextFiled
42ModerateSean M Wirtjes
CHIEF FINANCIAL OFFICER
sell
$32k
7,480 shares
-1%+121% from low-6% from high
48ModerateRobert G. Spignesi Jr.
PRESIDENT AND CEO
sell
$74k
17,922 shares
-2%+109% from low-12% from high
41ModerateJohn J. Addington Wilson
CHIEF OPERATING OFFICER
sell
$41k
9,603 shares
-3%+121% from low-6% from high
45ModerateSean M Wirtjes
CHIEF FINANCIAL OFFICER
sell
$68k
17,254 shares
-3%+96% from low-17% from high
51ModerateRobert G. Spignesi Jr.
PRESIDENT AND CEO
sell
$149k
38,327 shares
-3%+101% from low-15% from high
35WeakJohn J. Addington Wilson
CHIEF OPERATING OFFICER
sell
$21k
5,403 shares
-2%+96% from low-17% from high
37WeakSean M Wirtjes
CHIEF FINANCIAL OFFICER
sell
$23k
6,027 shares
-1%+89% from low-20% from high
47ModerateRobert G. Spignesi Jr.
PRESIDENT AND CEO
sell
$49k
12,840 shares
-1%+89% from low-20% from high
35WeakJohn J. Addington Wilson
CHIEF OPERATING OFFICER
sell
$17k
4,610 shares
-2%+89% from low-20% from high
59ModerateLongitude Capital Partners II, LLC
owner
sell
$190k
49,000 shares
-100%+96% from low-17% from high
29WeakLongitude Capital Partners II, LLC
owner
sell
$474k
108,739 shares
-3%+204% from low-11% from high
19WeakRobert G. Spignesi Jr.
PRESIDENT AND CEO
sell
$79k
23,755 shares
-2%+304% from low-14% from high
20WeakRobert G. Spignesi Jr.
PRESIDENT AND CEO
sell
$117k
33,688 shares
-4%+321% from low-10% from high
30WeakMelinda Litherland Pei
director
buy
$20k
20,000 shares
+58%-
25WeakMelinda Litherland Pei
director
buy
$21k
20,000 shares
+140%-

Transactions

The last 62 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
May 21, 2026Dafni Bika
director
AGrant or award
Class A Common Stock
+19,300$0.00$019,300May 26, 2026
May 21, 2026Dafni Bika
director
AGrant or award
Stock Option (Right to Buy)derivative
+38,700$0.00$038,700May 26, 2026
May 20, 2026Bain Capital Life Sciences Investors, LLC
owner
POpen-market purchase
Pre-Funded Warrant (right to buy)derivativeindirect: See footnotes
+1,463,000--1,463,000May 22, 2026
May 20, 2026Bain Capital Life Sciences Investors, LLC
owner
POpen-market purchase
Series A Warrant (right to buy)derivativeindirect: See footnotes
+1,463,000--1,463,000May 22, 2026
May 20, 2026Bain Capital Life Sciences Investors, LLC
owner
POpen-market purchase
Series B Warrant (right to buy)derivativeindirect: See footnotes
+1,463,000--1,463,000May 22, 2026
Mar 11, 2026Sean M Wirtjes
CHIEF FINANCIAL OFFICER
SOpen-market sale
Class A Common Stock
-7,480$4.32$32k556,194Mar 12, 2026
Mar 11, 2026John J. Addington Wilson
CHIEF OPERATING OFFICER
SOpen-market sale
Class A Common Stock
-9,603$4.32$41k316,762Mar 12, 2026
Mar 10, 2026Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-17,922$4.11$74k1,169,848Mar 12, 2026
Feb 27, 2026Natale S Ricciardi
director
MOption exercise
Class A Common Stock
+842$0.75$63229,442Mar 2, 2026
Feb 27, 2026Natale S Ricciardi
director
MOption exercise
Stock Option (Right to Buy)derivative
-842$0.75$6320Mar 2, 2026
Feb 20, 2026Sean M Wirtjes
CHIEF FINANCIAL OFFICER
SOpen-market sale
Class A Common Stock
-17,254$3.92$68k563,674Feb 20, 2026
Feb 20, 2026John J. Addington Wilson
CHIEF OPERATING OFFICER
SOpen-market sale
Class A Common Stock
-5,403$3.92$21k326,365Feb 20, 2026
Feb 19, 2026Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-38,327$3.89$149k1,187,770Feb 20, 2026
Feb 11, 2026John J. Addington Wilson
CHIEF OPERATING OFFICER
AGrant or award
Class A Common Stock
+74,000$0.00$0331,768Feb 13, 2026
Feb 11, 2026Sean M Wirtjes
CHIEF FINANCIAL OFFICER
AGrant or award
Class A Common Stock
+97,000$0.00$0580,928Feb 13, 2026
Feb 11, 2026Robert G. Spignesi Jr.
PRESIDENT AND CEO
AGrant or award
Class A Common Stock
+264,000$0.00$01,226,097Feb 13, 2026
Feb 11, 2026Sean M Wirtjes
CHIEF FINANCIAL OFFICER
AGrant or award
Stock Option (Right to Buy)derivative
+193,000$0.00$0193,000Feb 13, 2026
Feb 11, 2026John J. Addington Wilson
CHIEF OPERATING OFFICER
AGrant or award
Stock Option (Right to Buy)derivative
+147,000$0.00$0147,000Feb 13, 2026
Feb 11, 2026Robert G. Spignesi Jr.
PRESIDENT AND CEO
AGrant or award
Stock Option (Right to Buy)derivative
+528,000$0.00$0528,000Feb 13, 2026
Feb 9, 2026Sean M Wirtjes
CHIEF FINANCIAL OFFICER
SOpen-market sale
Class A Common Stock
-6,027$3.78$23k483,928Feb 10, 2026
Feb 9, 2026Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-12,840$3.78$49k962,097Feb 10, 2026
Feb 9, 2026John J. Addington Wilson
CHIEF OPERATING OFFICER
SOpen-market sale
Class A Common Stock
-4,610$3.78$17k257,768Feb 10, 2026
Feb 4, 2026Longitude Capital Partners II, LLC
owner
SOpen-market sale
Class A Common Stockindirect: Held by Longitude Prime Fund, L.P.
-49,000$3.88$190k0Feb 6, 2026
Jan 23, 2026Longitude Capital Partners II, LLC
owner
XIn-the-money exercise
Class A Common Stockindirect: Held by Longitude Venture Partners II, L.P.
+629,032$0.05$31k4,036,984Feb 3, 2026
Jan 23, 2026Longitude Capital Partners II, LLC
owner
SOpen-market sale
Class A Common Stockindirect: Held by Longitude Venture Partners II, L.P.
-7,739$4.06$31k4,029,245Feb 3, 2026
Jan 30, 2026Longitude Capital Partners II, LLC
owner
SOpen-market sale
Class A Common Stockindirect: Held by Longitude Prime Fund, L.P.
-46,000$4.54$209k104,000Feb 3, 2026
Feb 2, 2026Longitude Capital Partners II, LLC
owner
SOpen-market sale
Class A Common Stockindirect: Held by Longitude Prime Fund, L.P.
-27,500$4.25$117k76,500Feb 3, 2026
Feb 3, 2026Longitude Capital Partners II, LLC
owner
SOpen-market sale
Class A Common Stockindirect: Held by Longitude Prime Fund, L.P.
-27,500$4.24$117k49,000Feb 3, 2026
Jan 23, 2026Longitude Capital Partners II, LLC
owner
XIn-the-money exercise
Class A Common Stockderivativeindirect: Held by Longitude Venture Partners II, L.P.
-500,000$0.00$00Feb 3, 2026
Jan 23, 2026Longitude Capital Partners II, LLC
owner
XIn-the-money exercise
Class A Common Stockderivativeindirect: Held by Longitude Venture Partners II, L.P.
-129,032$0.00$00Feb 3, 2026
Nov 14, 2025Kirk Malloy
director
GGift
Class A Common Stock
-40,000$0.00$028,600Nov 18, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+3,400$0.75$2,550973,950Oct 21, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
FTax withholding
Class A Common Stock
-2,072$3.08$6,382971,878Oct 21, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+7,833$0.75$5,875979,711Oct 21, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
FTax withholding
Class A Common Stock
-4,774$3.08$15k974,937Oct 21, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Stock Option (Right to Buy)derivative
-3,400$0.00$00Oct 21, 2025
Oct 17, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Stock Option (Right to Buy)derivative
-7,833$0.00$00Oct 21, 2025
Jul 11, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+25,145$0.00$0969,160Jul 15, 2025
Jul 11, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-11,874$3.33$39k957,286Jul 15, 2025
Jul 14, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+25,145$0.00$0982,431Jul 15, 2025
Jul 14, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-11,881$3.32$39k970,550Jul 15, 2025
Jul 8, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+25,144$0.00$0897,510Jul 10, 2025
Jul 8, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-10,824$3.51$38k886,686Jul 10, 2025
Jul 9, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+25,144$0.00$0911,830Jul 10, 2025
Jul 9, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-11,247$3.51$39k900,583Jul 10, 2025
Jul 10, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
MOption exercise
Class A Common Stock
+25,145$0.00$0925,728Jul 10, 2025
Jul 10, 2025Robert G. Spignesi Jr.
PRESIDENT AND CEO
SOpen-market sale
Class A Common Stock
-11,617$3.40$39k944,015Jul 10, 2025
May 22, 2025Dafni Bika
director
AGrant or award
Stock Option (Right to Buy)derivative
+50,000$0.00$050,000May 27, 2025
May 22, 2025Natale S Ricciardi
director
AGrant or award
Class A Common Stock
+14,300$0.00$028,600May 27, 2025
May 22, 2025Melinda Litherland Pei
director
AGrant or award
Class A Common Stock
+14,300$0.00$068,600May 27, 2025
May 22, 2025Kirk Malloy
director
AGrant or award
Class A Common Stock
+14,300$0.00$078,600May 27, 2025
May 22, 2025Inese Lowenstein
director
AGrant or award
Class A Common Stock
+14,300$0.00$038,600May 27, 2025
May 22, 2025Richard S Kollender
director
AGrant or award
Class A Common Stock
+14,300$0.00$0111,018May 27, 2025
May 22, 2025Inese Lowenstein
director
AGrant or award
Stock Option (Right to Buy)derivative
+28,650$0.00$028,650May 27, 2025
May 22, 2025Kirk Malloy
director
AGrant or award
Stock Option (Right to Buy)derivative
+28,650$0.00$028,650May 27, 2025
May 22, 2025Richard S Kollender
director
AGrant or award
Stock Option (Right to Buy)derivative
+28,650$0.00$028,650May 27, 2025
May 22, 2025Melinda Litherland Pei
director
AGrant or award
Stock Option (Right to Buy)derivative
+28,650$0.00$028,650May 27, 2025
May 22, 2025Natale S Ricciardi
director
AGrant or award
Stock Option (Right to Buy)derivative
+28,650$0.00$028,650May 27, 2025
Dec 3, 2024Melinda Litherland Pei
director
POpen-market purchase
Class A Common Stock
+10,880$1.00$11k45,180Dec 5, 2024
Dec 5, 2024Melinda Litherland Pei
director
POpen-market purchase
Class A Common Stock
+9,120$1.04$9,48454,300Dec 5, 2024
Nov 26, 2024Melinda Litherland Pei
director
POpen-market purchase
Class A Common Stock
+108$1.04$11214,408Nov 27, 2024
Nov 27, 2024Melinda Litherland Pei
director
POpen-market purchase
Class A Common Stock
+19,892$1.05$21k34,300Nov 27, 2024

Insiders

Everyone who has filed a Form 4 here.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

RPID insider trading: RAPID MICRO BIOSYSTEMS, INC. | InsiderTell