ADVM insider buying and SEC filings, explained
Adverum Biotechnologies, Inc. · CIK 1501756
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$765K
Insiders who bought
2
Sold (not marked 10b5-1)
$4.6M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Dec 5, 2025 | Purchase (code P) | Peter Soparkar (President / COO) bought 50,000 shares at about $4.22 ($211K), reported as a purchase (code P). Holdings up 166% to 80,189 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 8, 2025 |
| Dec 5–8, 2025 | Purchase (code P) | Laurent Fischer (CEO and Director) bought 128,699 shares between Dec 5, 2025 and Dec 8, 2025 at about $4.30 ($554K), reported as a purchase (code P). Holdings up 177% to 201,513 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 8, 2025 |
| Dec 4, 2025 | Sale | Braden Michael Leonard (10% owner) sold 524,560 shares indirectly (by entity) at $4.19 ($2.2M). Holdings by entity down 21% to 1,958,080 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 5, 2025 |
| Dec 1–3, 2025 | Sale | Braden Michael Leonard (10% owner) sold 574,886 shares indirectly (by entity) between Dec 1, 2025 and Dec 3, 2025 at about $4.19 ($2.4M). Holdings by entity down 19% to 2,428,640 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 3, 2025 |
15 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$765K in purchases since Dec 5, 2025 · Purchases traded Dec 5, 2025 to Dec 8, 2025 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Peter Soparkar (President / COO) | $211K | Dec 5, 2025 | SEC filing |
| Laurent Fischer (CEO) | $554K | Dec 8, 2025 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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