// company-profile
Rapid Micro Biosystems, Inc. Insider Trading
RPIDEvery SEC Form 4 insider trading filing for Rapid Micro Biosystems, Inc. (RPID) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=RPID" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
Recent insider activity is bullish. Over the last 30 days, 6 insiders purchased shares (net $4K). Buying was led by Kollender Richard S.
// 90-day insight
Over the last 90 days, Rapid Micro Biosystems, Inc. insiders bought $129K across 34 transactions with no open-market sales.
- Most active insider: Kollender Richard S with 6 transactions totaling $3K.
- Largest single purchase: $25K by Spignesi Robert G. Jr. on May 29, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Rapid Micro Biosystems, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 24, 2026 | Kollender Richard S | RPID | Option Exercise | 1,681 | $0.75 | $1K |
| Jul 24, 2026 | Kollender Richard S | RPID | Option Exercise | 1,827 | $0.00 | $0K |
| Jul 24, 2026 | Kollender Richard S | RPID | Option Exercise | 1,681 | $0.00 | $0K |
| Jul 24, 2026 | Kollender Richard S | RPID | Option Exercise | 1,827 | $0.75 | $1K |
| Jul 22, 2026 | Spignesi Robert G. Jr. | RPID | Option Exercise | 1,402 | $0.00 | $0K |
45 more transactions hidden
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