Charles Greg Guyer
CIK 1811096 · EVP, Chief Technical Officer · last filed 2026-03-19
Charles Greg Guyer is an EVP, Chief Technical Officer who has filed 22 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing shows the insider had shares withheld for taxes covering $94.9K of BMRN on Mar 19, 2026. Across all open-market trades the lifetime net is −$2.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.7M 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.
$4.71M
1
22
-$2.95M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BMRN | EVP, Chief Technical Officer | 84,140 | $55.95 | $4.71M | -$2.95M | 22 | 2026-03-19 |
Recent Filings
22 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-19 | BMRN | Tax (F) | −1,693 | -$94.9K | EDGAR |
| 2026-03-17 | BMRN | Mixed | +5,881 | -$533.0K | EDGAR |
| 2026-03-12 | BMRN | Sell (S) | −16,486 | -$996.7K | EDGAR |
| 2026-02-26 | BMRN | Grant (A) | +15,222 | $0 | EDGAR |
| 2025-03-18 | BMRN | Mixed | −6,817 | -$1.40M | EDGAR |
| 2025-03-07 | BMRN | Sell (S) | −7,034 | -$501.4K | EDGAR |
| 2025-03-04 | BMRN | Tax (F) | −4,287 | -$305.1K | EDGAR |
| 2025-02-27 | BMRN | Grant (A) | +30,067 | $0 | EDGAR |
| 2024-11-14 | BMRN | Mixed | −5,223 | -$347.2K | EDGAR |
| 2024-05-07 | BMRN | Mixed | −4,195 | -$349.2K | EDGAR |