[Form 4] BIOMARIN PHARMACEUTICAL INC Insider Trading Activity

Rhea-AI Filing Summary

BioMarin Pharmaceutical executive Charles Greg Guyer reported new equity awards and a tax-related share withholding. On March 16, 2026 he received stock options for 35,680 shares of common stock at an exercise price of $57.43 per share, vesting over four years starting March 16, 2027.

He also received a grant of 14,990 shares of common stock, described in a footnote as restricted stock units granted on March 16, 2026 with no purchase price. On March 13, 2026, 9,109 shares of common stock were withheld at $58.51 per share to cover tax obligations, which is not an open-market sale. Following these transactions and a one-share clerical correction, he directly holds 85,833 shares of common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Guyer Charles Greg

(Last) (First) (Middle)

C/O BIOMARIN PHARMACEUTICAL INC.

770 LINDARO STREET

(Street)

SAN RAFAEL CA 94901

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BIOMARIN PHARMACEUTICAL INC [ BMRN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Technical Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/13/2026		F		9,109	D	$58.51	70,843	D
Common Stock	03/16/2026		A		14,990	A	$0(1)	85,833(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy Common Stock)	$57.43	03/16/2026		A		35,680		03/16/2027(3)	03/15/2036	Common Stock	35,680	$0	35,680	D

Explanation of Responses:

1. Restricted stock units granted March 16, 2026. Price not applicable.

2. The Reporting Person's direct holdings have been adjusted by one share to correct a previous clerical error.

3. Option grant vests 12/48th on March 16, 2027 and 1/48th on the 16th day of each month thereafter.

Remarks:

	/s/ Tae Sang Yoo, Attorney-in-Fact	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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