Rapid Micro Biosystems (RPID) CEO exercises stock options and boosts holdings
Rhea-AI Filing Summary
Rapid Micro Biosystems, Inc. reports that President and CEO Robert G. Spignesi Jr. exercised a stock option for 1,402 shares of Class A Common Stock on July 22, 2026 at an exercise price of $0.75 per share. The underlying option, which was fully vested and exercisable and scheduled to expire on August 11, 2026, was fully exercised and no longer remains outstanding. Following this transaction, Spignesi directly holds 1,191,973 shares of Class A Common Stock, with no shares sold in this filing.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 1,402 shares
Net Buy
2 txns
Insider
Spignesi Robert G. Jr.
Role
PRESIDENT AND CEO
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) F1 | 1,402 | $0.00 | $0.00 |
| Exercise | Class A Common Stock | 1,402 | $0.75 | $1K |
Holdings After Transaction:
Stock Option (Right to Buy) — 0 shares (Direct);
Class A Common Stock — 1,191,973 shares (Direct)
Footnotes (1)
- F1. The option is fully vested and exercisable.
Key Figures
Shares acquired via option exercise: 1,402 shares
Exercise price: $0.75 per share
Shares owned after transaction: 1,191,973 shares
+2 more
5 metrics
Shares acquired via option exercise
1,402 shares
Class A Common Stock acquired on July 22, 2026 through option exercise
Exercise price
$0.75 per share
Strike price of stock option exercised for 1,402 shares
Shares owned after transaction
1,191,973 shares
Direct Class A Common Stock holdings of CEO following the exercise
Option expiration date
August 11, 2026
Expiration date of fully exercised stock option grant
Derivative shares exercised
1,402 shares
Stock Option (Right to Buy) converted into Class A Common Stock
Key Terms
Stock Option (Right to Buy), Class A Common Stock, Exercise or conversion of derivative security
3 terms
Stock Option (Right to Buy) financial
"security_title: Stock Option (Right to Buy)"
Class A Common Stock financial
"underlying_security_title: Class A Common Stock"
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.
Exercise or conversion of derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did RPID CEO Robert G. Spignesi Jr. report?
Robert G. Spignesi Jr. exercised a stock option for 1,402 shares of Rapid Micro Biosystems Class A Common Stock at an exercise price of $0.75 per share on July 22, 2026, increasing his directly held common shares.
What was the exercise price of the RPID stock options in this Form 4?
The stock option was exercised at an exercise price of $0.75 per share for 1,402 shares of Class A Common Stock. The derivative entry shows a zero price because it represents the option itself, which converted into common shares at this stated strike price.
What happened to the Rapid Micro Biosystems (RPID) option that expired August 11, 2026?
The reported option, fully vested and exercisable, covered 1,402 shares at $0.75 per share and had an expiration date of August 11, 2026. It was fully exercised on July 22, 2026, leaving 0 shares remaining under that option grant.
Is the RPID CEO’s transaction on this Form 4 part of a 10b5-1 trading plan?
The filing’s Rule 10b5-1 checkbox is not marked as a plan transaction. The option exercise is reported without any accompanying footnote indicating that it was carried out under a pre-arranged 10b5-1 trading plan.