Douglas Kerr
CIK 1814189 · Chief Medical Officer · last filed 2026-08-17
"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
$4.36M
Companies
2
Total Filings
33
Lifetime Open-Market Net
-$1.76M
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 |
|---|---|---|---|---|---|---|---|
| DYN | Chief Medical Officer | 167,599 | $26.00 | $4.36M | -$210.2K | 12 | 2026-08-17 |
| Generation Bio Co. (GBIO) Delisted | CHIEF MEDICAL OFFICER | 38,563 | $5.34 | $205.9K | -$1.55M | 16 | 2024-01-31 |
Recent Filings · Page 3 of 4
33 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 |
|---|---|---|---|---|---|
| 2023-07-18 | Generation Bio Co. (GBIO) Delisted | Mixed | +5,254 | -$11.1K | EDGAR |
| 2023-04-18 | Generation Bio Co. (GBIO) Delisted | Mixed | +5,254 | -$9.8K | EDGAR |
| 2023-01-24 | Generation Bio Co. (GBIO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-01-18 | Generation Bio Co. (GBIO) Delisted | Mixed | +4,860 | -$13.1K | EDGAR |
| 2022-10-18 | Generation Bio Co. (GBIO) Delisted | Mixed | +5,254 | -$12.3K | EDGAR |
| 2022-07-19 | Generation Bio Co. (GBIO) Delisted | Mixed | +10,509 | -$31.4K | EDGAR |
| 2022-01-25 | Generation Bio Co. (GBIO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-07-12 | Generation Bio Co. (GBIO) Delisted | Mixed | — | -$70.5K | EDGAR |
| 2021-04-07 | Generation Bio Co. (GBIO) Delisted | Mixed | — | -$350.8K | EDGAR |
| 2021-03-09 | Generation Bio Co. (GBIO) Delisted | Mixed | — | -$302.6K | 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.