David P Schenkein
CIK 1578200 · Chief Executive Officer · last filed 2026-06-08
"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.
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Disclosed Exposure
$15.98M
Companies
6
Total Filings
130
Lifetime Open-Market Net
-$70.44M
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 |
|---|---|---|---|---|---|---|---|
| PRME | Director | — | $3.09 | — | $0 | 5 | 2026-06-08 |
| DNLI | Director | 52,897 | $24.05 | $1.27M | -$7.84M | 17 | 2026-06-05 |
| REGN | Director | 603 | $695.18 | $419.2K | $0 | 4 | 2026-01-06 |
| AGIO | Director | 397,014 | $35.99 | $14.29M | -$62.02M | 86 | 2024-06-24 |
| bluebird bio, Inc. (BLUE) Delisted | Director | 342 | $4.97 | $1.7K | -$577.8K | 10 | 2020-06-22 |
| Foundation Medicine, Inc. (FMI) Delisted | Director | 28,580 | — | — | $0 | 5 | 2016-06-20 |
Recent Filings · Page 2 of 13
130 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 |
|---|---|---|---|---|---|
| 2024-06-17 | AGIO | Exer (M) | +3,388 | $0 | EDGAR |
| 2024-06-14 | PRME | Grant (A) | — | $0 | EDGAR |
| 2024-06-04 | DNLI | Grant (A) | +5,967 | $0 | EDGAR |
| 2024-02-29 | AGIO | Mixed | — | -$210.0K | EDGAR |
| 2024-02-27 | AGIO | Notice (144) | −57,471 | -$2.01M | EDGAR |
| 2024-02-27 | AGIO | Mixed | — | -$98.9K | EDGAR |
| 2024-02-26 | AGIO | Notice (144) | −11,858 | -$389.8K | EDGAR |
| 2024-01-04 | REGN | Grant (A) | +42 | $0 | EDGAR |
| 2023-09-12 | REGN | Grant (A) | +240 | $0 | EDGAR |
| 2023-06-23 | AGIO | Exer (M) | +4,975 | $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.