David Scadden
CIK 1707715 · last filed 2026-06-23
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$734.9K
Companies
4
Total Filings
40
Lifetime Open-Market Net
$17.5K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AGIO | Director | 20,419 | $35.99 | $734.9K | -$81.5K | 22 | 2026-06-23 |
| EDIT | Director | — | $2.62 | — | $0 | 8 | 2026-06-22 |
| Carisma Therapeutics Inc. (CARM) Delisted | Director | — | $0.00 | — | $0 | 1 | 2024-07-01 |
| Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Director | 50,129 | $11.19 | $561.1K | $99.0K | 5 | 2022-06-30 |
Recent Filings · Page 3 of 4
40 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-06-05 | EDIT | Grant (A) | — | $0 | EDGAR |
| 2022-06-30 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-06-23 | AGIO | Grant (A) | — | $0 | EDGAR |
| 2022-06-13 | EDIT | Grant (A) | — | $0 | EDGAR |
| 2022-05-24 | AGIO | Exer (M) | +1,585 | $0 | EDGAR |
| 2021-06-07 | EDIT | Grant (A) | — | $0 | EDGAR |
| 2021-06-03 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-06-02 | AGIO | Exer (M) | +1,686 | $0 | EDGAR |
| 2021-05-24 | AGIO | Grant (A) | — | $0 | EDGAR |
| 2020-06-12 | EDIT | Grant (A) | — | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.