Marc Belsky
CIK 1382629 · Chief Financial Officer · last filed 2026-05-11
Marc Belsky is a Chief Financial Officer who has filed 36 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for KZR, was dated May 11, 2026. Across all open-market trades the lifetime net is −$3.1M, making them a net seller 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
4
36
-$3.15M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Kezar Life Sciences, Inc. (KZR) Delisted | Chief Financial Officer | 0 | $7.29 | $0 | $48.3K | 17 | 2026-05-11 |
| FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Senior Vice President and CFO | 60,472 | $178.75 | $10.81M | $0 | 8 | 2018-02-28 |
| FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Senior Vice President and CFO | 113,929 | $38.00 | $4.33M | -$3.20M | 7 | 2016-04-26 |
| CELL GENESYS INC (CEGE) Delisted | VP Finance & CAO | 0 | — | — | $0 | 4 | 2009-10-15 |
Recent Filings
36 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-11 | Kezar Life Sciences, Inc. (KZR) Delisted | Mixed | −1,738 | $0 | EDGAR |
| 2025-04-01 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2025-03-05 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2025-01-13 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-01-09 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-07-26 | Kezar Life Sciences, Inc. (KZR) Delisted | Mixed | — | $0 | EDGAR |
| 2023-01-10 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-01-07 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-01-11 | Kezar Life Sciences, Inc. (KZR) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-02-05 | Kezar Life Sciences, Inc. (KZR) Delisted | Buy (P) | +15,384 | $40.0K | EDGAR |