ERDTMANN RAINER M (President and COO) purchased 7.8% of their position (50K shares) of BIOMEA FUSION, INC. on the open market
Open‑market purchase worth $54.6K — a moderate purchase. The strongest form of insider conviction signal.
P · 2 purchases
Filed: 12/2/2025ACC: 0001193125-25-305287
DirectorOfficer10% Owner· President and COO
Since Apr 2021
+50K
Net shares
Net buyer
$54.6K
Total acquired
2
Open market trades
2B · 0S
2
Total transactions
50K acquired
Non-Derivative Transactions2
Common Stock
Direct
Shares
+40K
Price / share
$1.10
Trade value
$44.05K
% of position
6.2%
11/28/2025
643.03K→683.03K
Common Stock
Direct
Shares
+10K
Price / share
$1.05
Trade value
$10.50K
% of position
1.5%
12/1/2025
683.03K→693.03K
Total
Net shares
+50K
Net value
$54.55K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 11/28/2025 | P · Purchase | +40K | $1.10 | $44.05K | 6.2% | 643.03K | 683.03K |
| Common Stock Direct | 12/1/2025 | P · Purchase | +10K | $1.05 | $10.50K | 1.5% | 683.03K | 693.03K |
| Total | +50K | $54.55K | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)7
Common Stock
IndirectShares owned19.40K
Common Stock
IndirectShares owned20K
Common Stock
IndirectShares owned228.47K
Common Stock
IndirectShares owned20K
Common Stock
IndirectShares owned1.13M
Common Stock
IndirectShares owned252.32K
Common Stock
IndirectShares owned174.61K
Total
1.85M indirect1.85M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 19.40K | Indirect |
| Common Stock | 20K | Indirect |
| Common Stock | 228.47K | Indirect |
| Common Stock | 20K | Indirect |
| Common Stock | 1.13M | Indirect |
| Common Stock | 252.32K | Indirect |
| Common Stock | 174.61K | Indirect |
| Total | 1.85M | 1.85M indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported