Michael Gladstone
CIK 1864256 · last filed 2025-08-14
Michael Gladstone is a corporate insider who has filed 9 SEC Form 4 insider transactions across 2 companies since 2022. Across all open-market trades the lifetime net is +$11.5M, making them a net buyer over the disclosed history.
"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.
$0
2
9
$11.50M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Third Harmonic Bio, Inc. (THRD) Delisted | Director | — | $5.38 | — | $0 | 4 | 2024-06-10 |
| Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Director | 766,667 | $21.53 | $16.51M | $11.50M | 4 | 2024-05-28 |
Recent Filings
9 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-14 | — | Other (J) | — | $0 | |
| 2024-06-10 | Third Harmonic Bio, Inc. (THRD) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-05-28 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-06-26 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-06-08 | Third Harmonic Bio, Inc. (THRD) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-03-08 | Third Harmonic Bio, Inc. (THRD) Delisted | Mixed | — | $0 | EDGAR |
| 2022-10-27 | Third Harmonic Bio, Inc. (THRD) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-06-23 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-06-22 | Day One Biopharmaceuticals, Inc. (DAWN) Delisted | Buy (P) | +766,667 | $11.50M | EDGAR |