C. David Nicholson
CIK 1636168 · last filed 2025-12-10
C. David Nicholson is a corporate insider who has filed 13 SEC Form 4 insider transactions across 2 companies since 2016. The most recent filing, for ADVM, was dated Dec 10, 2025. Across all open-market trades the lifetime net is +$10.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $15.2K across reported positions.
"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.
$15.2K
2
13
$10.0K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Adverum Biotechnologies, Inc. (ADVM) Delisted | Director | — | $4.36 | — | $0 | 4 | 2025-12-10 |
| ATNM | Director | 15,000 | $1.01 | $15.2K | $10.0K | 9 | 2025-04-02 |
Recent Filings
13 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-10 | Adverum Biotechnologies, Inc. (ADVM) Delisted | Disp (D) | — | $0 | EDGAR |
| 2025-06-20 | Adverum Biotechnologies, Inc. (ADVM) Delisted | Grant (A) | — | $0 | EDGAR |
| 2025-04-02 | ATNM | Disp (D) | — | $0 | EDGAR |
| 2024-06-20 | Adverum Biotechnologies, Inc. (ADVM) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-12-29 | ATNM | Grant (A) | — | $0 | EDGAR |
| 2023-11-06 | Adverum Biotechnologies, Inc. (ADVM) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-07-01 | ATNM | Grant (A) | — | $0 | EDGAR |
| 2021-09-03 | ATNM | Grant (A) | — | $0 | EDGAR |
| 2020-08-14 | ATNM | Grant (A) | — | $0 | EDGAR |
| 2019-07-16 | ATNM | Grant (A) | — | $0 | EDGAR |