Charles Greg Guyer - Net Worth and Insider Trading
Charles Greg Guyer Net Worth
The estimated net worth of Charles Greg Guyer is at least $5 Million dollars as of 2026-09-11. Charles Greg Guyer is the EVP, Chief Technical Officer of BioMarin Pharmaceutical Inc and owns about 79,953 shares of BioMarin Pharmaceutical Inc (BMRN) stock worth over $5 Million. Details can be seen in Charles Greg Guyer's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Charles Greg Guyer has not made any transactions after 2026-03-11 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Charles Greg Guyer
Charles Greg Guyer Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Charles Greg Guyer owns 1 companies in total, including BioMarin Pharmaceutical Inc (BMRN) .
Click here to see the complete history of Charles Greg Guyer’s form 4 insider trades.
Insider Ownership Summary of Charles Greg Guyer
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| BMRN | BioMarin Pharmaceutical Inc | 2026-03-11 | EVP & Chief Technical Officer |
Charles Greg Guyer Latest Holdings Summary
Charles Greg Guyer currently owns a total of 1 stock. Charles Greg Guyer owns 79,953 shares of BioMarin Pharmaceutical Inc (BMRN) as of March 11, 2026, with a value of $5 Million.
Latest Holdings of Charles Greg Guyer
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| BMRN | BioMarin Pharmaceutical Inc | 2026-03-11 | 79,953 | 65.52 | 5,238,521 |
Holding Weightings of Charles Greg Guyer
Charles Greg Guyer Form 4 Trading Tracker
According to the SEC Form 4 filings, Charles Greg Guyer has made a total of 5 transactions in BioMarin Pharmaceutical Inc (BMRN) over the past 5 years, including 0 buys and 5 sells. The most-recent trade in BioMarin Pharmaceutical Inc is the sale of 16,486 shares on March 11, 2026, which brought Charles Greg Guyer around $996,744.
Insider Trading History of Charles Greg Guyer
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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Charles Greg Guyer Trading Performance
Charles Greg Guyer Ownership Network
Ownership Network List of Charles Greg Guyer
Ownership Network Relation of Charles Greg Guyer

Charles Greg Guyer Owned Company Details
What does BioMarin Pharmaceutical Inc do?
Who are the key executives at BioMarin Pharmaceutical Inc?
Charles Greg Guyer is the EVP & Chief Technical Officer of BioMarin Pharmaceutical Inc. Other key executives at BioMarin Pharmaceutical Inc include VP & General Counsel George Eric Davis , EVP & Chief R&D Officer Gregory R Friberg , and VP & Chief Accounting Officer Rashmi Virendra Ramchandani .
BioMarin Pharmaceutical Inc (BMRN) Insider Trades Summary
Over the past 18 months, Charles Greg Guyer made 1 insider transaction in BioMarin Pharmaceutical Inc (BMRN) with a net sale of 16,486. Other recent insider transactions involving BioMarin Pharmaceutical Inc (BMRN) include a net sale of 43,618 shares made by George Eric Davis , a net sale of 9,607 shares made by Gregory R Friberg , and a net sale of 3,081 shares made by Erin Burkhart .
In summary, during the past 3 months, insiders sold 17,557 shares of BioMarin Pharmaceutical Inc (BMRN) in total and bought 0 shares, with a net sale of 17,557 shares. During the past 18 months, 73,065 shares of BioMarin Pharmaceutical Inc (BMRN) were sold and 0 shares were bought by its insiders, resulting in a net sale of 73,065 shares.
BioMarin Pharmaceutical Inc (BMRN)'s detailed insider trading history can be found in Insider Trading Tracker table.
BioMarin Pharmaceutical Inc Insider Transactions
Charles Greg Guyer Mailing Address
Above is the net worth, insider trading, and ownership report for Charles Greg Guyer. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Charles Greg Guyer's mailing address is: San Rafael Ca 94901.