FISCHER LAURENT (CEO and Director) purchased 176.8% of their position (128.70K shares) of ADVERUM BIOTECHNOLOGIES, INC. on the open market
Open‑market purchase worth $553.9K — a major conviction buy. The strongest form of insider conviction signal.
P · 2 purchases
Filed: 12/8/2025ACC: 0001379344-25-000004
DirectorOfficer· CEO and Director
Since Jun 2020
+128.70K
Net shares
Net buyer
$553.9K
Total acquired
2
Open market trades
2B · 0S
2
Total transactions
128.70K acquired
Non-Derivative Transactions2
Common Stock
Direct
Shares
+11.09K
Price / share
$4.24
Trade value
$47K
% of position
15.2%
12/5/2025
72.81K→83.90K
Common Stock
Direct
Shares
+117.61K
Price / share
$4.31
Trade value
$506.92K
% of position
140.2%
12/8/2025
83.90K→201.51K
Total
Net shares
+128.70K
Net value
$553.92K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 12/5/2025 | P · Purchase | +11.09K | $4.24 | $47K | 15.2% | 72.81K | 83.90K |
| Common Stock Direct | 12/8/2025 | P · Purchase | +117.61K | $4.31 | $506.92K | 140.2% | 83.90K | 201.51K |
| Total | +128.70K | $553.92K | ||||||
Derivative Transactions0
No derivative transactions reported