Spignesi Robert G. Jr. sold ~$476K in Rapid Micro Biosystems Inc stock
Rapid Micro Biosystems Inc (RPID) · Data via SEC EDGAR Form 4
Price Performance · 10 days before → 90 days after trade
▲ = insider buy date
Trade Details · Public SEC Filing
Insider
Spignesi Robert G. Jr.
Role
—
Transaction
Open-Market Sale
Approx. Value
~$476K
Trade Date
Feb 20, 2026
Company
Rapid Micro Biosystems Inc
Ticker
RPIDSource
SEC EDGAR Form 4
Why This Trade Stands Out
Strong conviction signal
Scored above average across multiple factors. Roughly 15% of insider trades qualify as Strong.
~$476K sale
A meaningful investment of personal capital. The average insider purchase is around $150K, putting this in the typical range for serious positions.
3 insiders traded in the same window
When multiple insiders independently buy within 30 days, it's called a cluster. Studies show clustered insider purchases outperform solo trades significantly, because several people with inside knowledge are reaching the same conclusion.
How good is Spignesi Robert G. Jr. at picking stocks?
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Spignesi Robert G. Jr. wasn't the only one selling.
3 insiders at Rapid Micro Biosystems Inc traded within the same 30-day window.
See who else bought · FreeOn February 20, 2026, Spignesi Robert G. Jr. — a corporate insider at Rapid Micro Biosystems Inc — filed a Form 4 with the SEC disclosing an open-market sale of approximately ~$476K in Rapid Micro Biosystems Inc (RPID) stock.
This transaction was part of a cluster — 3 insiders at Rapid Micro Biosystems Inc made open-market sales within the same 30-day window. Cluster activity from multiple independent insiders is one of the most studied patterns in insider trading research.
Under Section 16(a) of the Securities Exchange Act of 1934, corporate insiders must report all open-market stock transactions to the SEC within two business days. These filings — known as Form 4s — are publicly available on the SEC's EDGAR database. VeritySignals filters and scores the full Form 4 stream to surface high-conviction signals like this one.
VeritySignals Conviction Analysis
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All data sourced from publicly available SEC Form 4 filings via EDGAR · Not financial advice · Past performance does not guarantee future results.
At a Glance
More RPID Insider Activity
Spignesi Robert G. Jr.
Feb 2, 2026
~$750K
STRONG
Spignesi Robert G. Jr.
Aug 6, 2024
~$142K
STRONG
Spignesi Robert G. Jr.
May 16, 2022
~$771K
STRONG
Longitude Capital Partners II, LLC
Jul 19, 2021
~$5.0M
STRONG
How to Read Insider Trades
What is this?
When company executives buy or sell their own stock, they must report it to the SEC within 2 days. These public filings reveal what the people who know the company best are doing with their own money.
Why does it matter?
Insiders can sell for many reasons (taxes, diversification, expenses), but they generally only buy for one: they think the stock is going up. That's why insider purchases are more predictive than sales.
What makes a trade "strong"?
We score trades on 15+ factors: the insider's role (CEO > director), trade size relative to their salary, whether other insiders also bought (clusters), and historical accuracy of the insider.
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