Marc Belsky
CIK 1382629 · Chief Financial Officer · last filed 2026-05-11
"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
$0
Companies
4
Total Filings
36
Lifetime Open-Market Net
-$3.15M
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 |
|---|---|---|---|---|---|---|---|
| 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 · Page 3 of 4
36 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2017-03-03 | FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Tax (F) | −18,881 | -$845.3K | EDGAR |
| 2017-02-09 | FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Grant (A) | +12,656 | $0 | EDGAR |
| 2017-01-05 | FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Tax (F) | −2,281 | -$110.9K | EDGAR |
| 2016-09-01 | FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Tax (F) | +17,980 | $804.4K | EDGAR |
| 2016-08-29 | FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Grant (A) | +5,000 | $0 | EDGAR |
| 2016-04-26 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Mixed | — | -$1.39M | EDGAR |
| 2016-04-08 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Mixed | — | -$780.7K | EDGAR |
| 2016-03-31 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Mixed | — | -$491.9K | EDGAR |
| 2015-08-21 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Grant (A) | +75,000 | $0 | EDGAR |
| 2015-08-19 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Grant (A) | — | $0 | EDGAR |
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.