Over the last 12 months, Rapid Micro Biosystems insiders reported no purchases and 11 sales totaling $11K across SEC Form 4 filings.
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Mar 11, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER · O | ▼ Sale | 9,603 | $0.04 | $415 | -2.9% | — |
| Mar 11, 2026 | WIRTJES SEAN MCHIEF FINANCIAL OFFICER · O | ▼ Sale | 7,480 | $0.04 | $323 | -1.3% | — |
| Mar 10, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO · O·D | ▼ Sale | 17,922 | $0.04 | $737 | -1.5% | — |
| Feb 20, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER · O | ▼ Sale | 5,403 | $0.04 | $212 | -1.6% | — |
| Feb 20, 2026 | WIRTJES SEAN MCHIEF FINANCIAL OFFICER · O | ▼ Sale | 17,254 | $0.04 | $676 | -3% | — |
| Feb 19, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO · O·D | ▼ Sale | 38,327 | $0.04 | $1K | -3.1% | — |
| Feb 9, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER · O | ▼ Sale | 4,610 | $0.04 | $174 | -1.8% | — |
| Feb 9, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO · O·D | ▼ Sale | 12,840 | $0.04 | $485 | -1.3% | — |
| Feb 9, 2026 | WIRTJES SEAN MCHIEF FINANCIAL OFFICER · O | ▼ Sale | 6,027 | $0.04 | $228 | -1.2% | — |
| Feb 4, 2026 | Longitude Capital Partners II, LLC10% | ▼ Sale | 49,000 | $0.04 | $2K | -100% | indirect |
| Feb 3, 2026 | Longitude Capital Partners II, LLC10% | ▼ Sale | 108,739 | $0.04 | $5K | -68.9% | 4 tranches · indirect |
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Rapid Micro Biosystems filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $RPID feed.