Samuel C. Blackman
CIK 1863676 · HEAD OF R&D · last filed 2024-12-12
"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
$0
Companies
1
Total Filings
48
Lifetime Open-Market Net
-$6.62M
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 |
|---|---|---|---|---|---|---|---|
| Day One Biopharmaceuticals, Inc. (DAWN) Delisted | HEAD OF R&D | 2,034,015 | $21.53 | $43.79M | -$6.62M | 38 | 2024-12-12 |
Recent Filings · Page 4 of 5
48 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 |
|---|---|---|---|---|---|
| 2023-05-16 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Notice (144) | −692 | -$9.1K | EDGAR |
| 2023-03-14 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$180.5K | EDGAR |
| 2023-02-17 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Mixed | +1,950 | -$13.2K | EDGAR |
| 2023-02-13 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$200.7K | EDGAR |
| 2023-01-19 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-01-11 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$228.6K | EDGAR |
| 2022-12-05 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$214.5K | EDGAR |
| 2022-11-17 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Mixed | +810 | -$8.1K | EDGAR |
| 2022-11-03 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$200.1K | EDGAR |
| 2022-10-05 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Sell (S) | −10,000 | -$199.9K | 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.