Charles Greg Guyer

CIK: 0001811096

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (16.7%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)11 (61.1%)

Compensation grants

Other (G, F, J, C, D, …)4 (22.2%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

BMRN

BIOMARIN PHARMACEUTICAL INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (18 total)

BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 17, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $56.05$95K
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 16, 2026
Award(A)
Direct
15K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 13, 2026
Tax Payment(F)
Direct
9.1K shares at avg. $58.51$533K
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 11, 2026
Sale(S)
Direct
16.5K shares at avg. $60.46$997K
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2026
Award(A)
Direct
2.4K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2026
Award(A)
Direct
6.2K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2026
Award(A)
Direct
6.7K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Oct 31, 2025
Award(A)
Direct
62 shares at avg. $45.53$3K
BMRN
BIOMARIN PHARMACEUTICAL INC
Apr 30, 2025
Award(A)
Direct
317 shares at avg. $54.14$17K
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 17, 2025
Award(A)
Direct
13.3K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 14, 2025
Tax Payment(F)
Direct
20.1K shares at avg. $69.44$1.4M
BMRN
BIOMARIN PHARMACEUTICAL INC
Mar 6, 2025
Sale(S)
Direct
7K shares at avg. $71.28$501K
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 28, 2025
Tax Payment(F)
Direct
4.3K shares at avg. $71.16$305K
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2025
Award(A)
Direct
11K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2025
Award(A)
Direct
9.7K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Feb 25, 2025
Award(A)
Direct
9.4K shares-
BMRN
BIOMARIN PHARMACEUTICAL INC
Nov 12, 2024
Sale(S)
Direct
5.3K shares at avg. $66.37$350K
BMRN
BIOMARIN PHARMACEUTICAL INC
Oct 31, 2024
Award(A)
Direct
55 shares at avg. $56.01$3K

		Type	Shares	Price		Ownership
Mar 17, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Tax Payment(F)	1,693	$56.05	$94,893	Direct
Mar 16, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	14,990	-	$0	Direct
Mar 13, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Tax Payment(F)	9,109	$58.51	$532,968	Direct
Mar 11, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Sale(S)	16,486	$60.46	$996,744	Direct
Feb 25, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	2,371	-	$0	Direct
Feb 25, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	6,176	-	$0	Direct
Feb 25, 2026	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	6,675	-	$0	Direct
Oct 31, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	62	$45.53	$2,823	Direct
Apr 30, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	317	$54.14	$17,161	Direct
Mar 17, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	13,310	-	-	Direct
Mar 14, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Tax Payment(F)	20,127	$69.44	$1,397,619	Direct
Mar 6, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Sale(S)	7,034	$71.28	$501,355	Direct
Feb 28, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Tax Payment(F)	4,287	$71.16	$305,063	Direct
Feb 25, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	11,040	-	-	Direct
Feb 25, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	9,660	-	-	Direct
Feb 25, 2025	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	9,367	-	-	Direct
Nov 12, 2024	BMRN BIOMARIN PHARMACEUTICAL INC	Sale(S)	5,278	$66.37	$350,324	Direct
Oct 31, 2024	BMRN BIOMARIN PHARMACEUTICAL INC	Award(A)	55	$56.01	$3,080	Direct

1-18 of 18 transactions

About Guyer Charles Greg

Guyer Charles Greg (SEC CIK 0001811096) files insider reports with the SEC as EVP, Chief Technical Officer of BIOMARIN PHARMACEUTICAL INC (BMRN).

Signal8 holds 10 ownership filings by Guyer Charles Greg (9 Form 4, 1 Form 5), filed between Nov 14, 2024 and Mar 19, 2026. Those filings report 18 transactions, from Oct 31, 2024 to Mar 17, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Guyer Charles Greg's filings is in SAN RAFAEL, CA.

Recent filings by Guyer Charles Greg

Mar 17, 2026: Tax withholding of BMRN shares (Form 4, code F).
Mar 16, 2026: Grant or award of BMRN shares (Form 4, code A).
Mar 13, 2026: Tax withholding of BMRN shares (Form 4, code F).
Mar 11, 2026: Open-market sale of BMRN shares (Form 4, code S).
Feb 25, 2026: Grants or awards of BMRN shares (3 lines, Form 4, code A).

Other insiders filing for BIOMARIN PHARMACEUTICAL INC (BMRN)

Friberg Gregory R, EVP, Chief R&D Officer
Plenge Robert M, Director
Davis George Eric, EVP, Chief Legal Officer
Countouriotis Athena, Director
Walbert Timothy P, Director
Ho Maykin, Director

How to read Form 4 transaction codes