Form 4 for RPID RAPID MICRO BIOSYSTEMS, INC.
Accepted 2025-10-21 00:00:00 ET · period of report 2025-10-17 · accession 0001380106-25-000190 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2025-10-21 | 2025-10-17 | RPID | Spignesi Robert G. Jr. | Pres AND CEO, Dir | F - Tax | $3.08 | -6,846 | 971.9K | -0.7% | -$21.1K |
| DM | 2025-10-21 | 2025-10-17 | RPID | Spignesi Robert G. Jr. | Pres AND CEO, Dir | M - OptEx | $0.75 | +11.2K | 974.0K | +1% | +$8,425 |
| DM | 2025-10-21 | 2025-10-17 | RPID | Spignesi Robert G. Jr. | Pres AND CEO, Dir | M - OptEx | $0.00 | -11.2K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2025-10-17 | F | D | 4,774 | $3.08 | 974,937 | D | — | — | (F2) Represents a "net exercise" of outstanding stock options. The reporting person received 3,059 shares of common stock on net exercise of option to purchase 7,833 shares of common stock. The Company withheld 4,774 shares of common stock underlying the option for payment of the exercise price and tax withholdings, using the closing stock price on October 17, 2025 of $3.08, pursuant to the terms of the 2010 Stock Option and Grant Plan. |
| 2 | Common | Class A Common Stock | 2025-10-17 | M | A | 7,833 | $0.75 | 979,711 | D | — | — | |
| 3 | Common | Class A Common Stock | 2025-10-17 | F | D | 2,072 | $3.08 | 971,878 | D | — | — | (F1) Represents a "net exercise" of outstanding stock options. The reporting person received 1,328 shares of common stock on net exercise of option to purchase 3,400 shares of common stock. The Company withheld 2,072 shares of common stock underlying the option for payment of the exercise price and tax withholdings, using the closing stock price on October 17, 2025 of $3.08, pursuant to the terms of the 2010 Stock Option and Grant Plan. |
| 4 | Common | Class A Common Stock | 2025-10-17 | M | A | 3,400 | $0.75 | 973,950 | D | — | — | |
| 5 | Derivative | Stock Option (Right to Buy) | 2025-10-17 | M | D | 3,400 | $0.00 | 0 | D | $0.75 · — to 2025-10-22 | 3,400 Class A Common Stock | (F3) The option is fully vested and exercisable. |
| 6 | Derivative | Stock Option (Right to Buy) | 2025-10-17 | M | D | 7,833 | $0.00 | 0 | D | $0.75 · — to 2025-10-22 | 7,833 Class A Common Stock | (F3) The option is fully vested and exercisable. |