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RPID

RAPID MICRO BIOSYSTEMS (RPID) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $0.89 +3.7% on the day -75.1% over 12 months 52-week range $0.86 – $4.68

Share price and insider trades

RPID closeInsider buyInsider sale
0246NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $31,420 on 2026-01-23 · Longitude Prime Partners, LlcSold $73,659 on 2026-03-10 · Robert G. Spignesi Jr.Sold $73,799 on 2026-03-11 · John J. Addington Wilson, Sean M WirtjesSold $88,743 on 2026-02-09 · John J. Addington Wilson, Robert G. Spignesi Jr., Sean M WirtjesSold $88,815 on 2026-02-20 · John J. Addington Wilson, Sean M WirtjesSold $116,600 on 2026-02-03 · Longitude Prime Partners, LlcSold $116,875 on 2026-02-02 · Longitude Prime Partners, LlcSold $149,092 on 2026-02-19 · Robert G. Spignesi Jr.Sold $190,120 on 2026-02-04 · Longitude Venture Partners Ii, L.P.Sold $208,840 on 2026-01-30 · Longitude Prime Partners, Llc
Bought, 12 months$0
Sold, 12 months$1.1M
Insiders buying0
Insiders selling5

RAPID MICRO BIOSYSTEMS insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $1.1M of RPID stock on the open market.

RPID insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q1 2026: $1.1M sold (14 trades)Q1 2026Q2 2026Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026—0—0
Q2 2026—0—0
Q1 2026—0$1.1M14

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day1.0×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 RAPID MICRO BIOSYSTEMS, INC. insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $1.1M. 0 of 14 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Mar 12SEC Robert G. Spignesi Jr.CEO, President Sell 17,9221,169,848 held (−2%) $4.11 $74K -78.2% —
Mar 12SEC John J. Addington WilsonCOO Sell 9,603316,762 held (−3%) $4.32 $41K -79.3% —
Mar 12SEC Sean M WirtjesCFO Sell 7,480556,194 held (−1%) $4.32 $32K -79.3% —
Feb 20SEC Robert G. Spignesi Jr.CEO, President Sell 38,3271,187,770 held (−3%) $3.89 $149K -77.0% —
Feb 20SEC Sean M WirtjesCFO Sell 17,254563,674 held (−3%) $3.92 $68K -77.2% —
Feb 20SEC John J. Addington WilsonCOO Sell 5,403326,365 held (−2%) $3.92 $21K -77.2% —
Feb 10SEC Robert G. Spignesi Jr.CEO, President Sell 12,840962,097 held (−1%) $3.78 $49K -76.3% —
Feb 10SEC Sean M WirtjesCFO Sell 6,027483,928 held (−1%) $3.78 $23K -76.3% —
Feb 10SEC John J. Addington WilsonCOO Sell 4,610257,768 held (−2%) $3.78 $17K -76.3% —
Feb 6SEC Longitude Venture Partners Ii, L.P.10% Owner Sell 49,000 $3.88 $190K -77.0% —
Feb 3SEC Longitude Prime Partners, Llc10% Owner Sell 46,000104,000 held (−31%) $4.54 $209K -80.3% —
Feb 3SEC Longitude Prime Partners, Llc10% Owner Sell 27,50076,500 held (−26%) $4.25 $117K -79.0% —
Feb 3SEC Longitude Prime Partners, Llc10% Owner Sell 27,50049,000 held (−36%) $4.24 $117K -78.9% —
Feb 3SEC Longitude Prime Partners, Llc10% Owner Sell 7,7394,029,245 held (−0%) $4.06 $31K -78.0% —

Insiders at RAPID MICRO BIOSYSTEMS, INC.

InsiderBoughtSoldLast filingScore
Longitude Prime Partners, Llc10% Owner — $474K Feb 3, 2026 —
Robert G. Spignesi Jr.CEO, President — $271K Mar 12, 2026 —
Longitude Venture Partners Ii, L.P.10% Owner — $190K Feb 6, 2026 —
Sean M WirtjesCFO — $123K Mar 12, 2026 —
John J. Addington WilsonCOO — $80K Mar 12, 2026 —

RPID stock: common questions

Are RAPID MICRO BIOSYSTEMS, INC. insiders buying RPID stock?

In the past 12 months, 0 insiders reported open-market purchases of RPID worth $0.

Are RAPID MICRO BIOSYSTEMS, INC. insiders selling RPID stock?

5 insiders reported sales worth $1.1M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is RPID's 52-week range?

Over the past year RPID has traded between $0.86 and $4.68. It last closed at $0.89 on Oct 9, 2026.