Rainer M. Erdtmann - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Rainer M. Erdtmann is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $55K.
Profile
Rainer M. Erdtmann is a corporate insider at Biomea Fusion, Inc. (BMEA). Erdtmann has reported 5 insider filings with the SEC since 2025. The most recent filing was in April 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- Biomea Fusion, Inc.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| Total purchases tracked | 4 |
|---|
Trading Pattern
InsiderAlpha's records for Rainer M. Erdtmann go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. The typical open-market purchase is $27K (2 buys totaling $55K). The largest single buy on record is $44K of BMEA in 2025. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Rainer M. Erdtmann has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at Biomea Fusion, Inc. (BMEA) - 3 filings, 2025 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-12-02 | BMEA | Biomea Fusion, Inc. | P - Open-market purchase | 10.0K | $1.05 | $10K |
| 2025-12-02 | BMEA | Biomea Fusion, Inc. | P - Open-market purchase | 40.0K | $1.10 | $44K |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 10.0K | $0.00 | |
| 2025-08-13 | BMEA | Biomea Fusion, Inc. | G - Bona-fide gift | 40.0K | $0.00 |
Most Active Insiders Right Now
Rainer M. Erdtmann has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- RBC Global Asset Management (U.S.) Inc.
- Redmile Group, LLC
- Andrew Phillips Reed
- Daniel Reis-Faria
- Saul B. Rosenthal
- Jack Ross
- Martine A. Rothblatt
- Saba Capital Management, L.P.
Frequently Asked Questions
Who is Rainer M. Erdtmann?
Rainer M. Erdtmann is a corporate insider at Biomea Fusion, Inc. (BMEA). Erdtmann has reported 5 insider filings with the SEC since 2025. The most recent filing was in April 2026.…
Has Rainer M. Erdtmann been buying or selling stock?
Recorded transactions: 2 open-market purchases ($55K) and 0 open-market sales across all tracked filings.
How accurate is Rainer M. Erdtmann's historical track record?
Across 4 tracked purchases, Rainer M. Erdtmann averaged no 30-day data yet with a win rate pending. InsiderAlpha rates the track record at –/5 stars.
Where can I see all of Rainer M. Erdtmann's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Rainer M. Erdtmann profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.