Sell4

ACADIA PHARMACEUTICALS INC

ACAD

Total Value

$432.7K

Net $432.7K sold

Filing Date

Jul 31, 2026

2 transactions

Sales

$432.7K

2 transactions

Trade Summary

On Jul 29, 2026 through Jul 30, 2026, Thompson Elizabeth H.Z., Insider, sold $432.7K of ACADIA PHARMACEUTICALS INC (ACAD) across 2 transactions. The filing covers Common Stock and reflects net selling of $432.7K. Reported prices ranged from $26.13 to $26.17. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Price at the Time of the Trade

ACAD daily price with the insider's sale marked at $26.13.

Sold near the 6-month high · about level with today's price.

Price data is delayed and provided for context only — not investment advice.

Insider Information

Name: Thompson Elizabeth H.Z.
Role: Insider
Location: SAN DIEGO, CA

Filing Details

Filing Date: Jul 31, 2026
Transaction Date: Jul 29, 2026
Accession Number: 0001861477-26-000005
Form Type: 4
Net Trading Amount: -$432.7K

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Jul 29, 2026	Common Stock	32,272	—	Exercise	—
Jul 30, 2026	Common Stock	16,508	$26.13	Sale	$431.4K
Jul 30, 2026	Common Stock	50	$26.17	Sale	$1.3K

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Jul 29, 2026	ACAD derivative	32,272	—	Exercise	—

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Footnotes

(F1)Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
(F2)The mandatory sales reported in this Form 4 were made to cover withholding taxes and tax related items imposed by the Issuer in connection with the vesting of restricted stock units, and it is intended to comply with the requirements of Rule 10b5-1(c)(1)(i)(B) under the Exchange Act and be interpreted to meet the requirements of Rule 10b5-1(c).
(F3)50% of the restricted stock units vested on July 29, 2026 and 25% vest on each of July 29, 2027 and July 29, 2028.

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Thompson Elizabeth H.Z.

(Last)

(First)

(Middle)

C/O ACADIA PHARMACEUTICALS INC.

12830 EL CAMINO REAL, SUITE 400

(Street)

SAN DIEGO

92130

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
ACADIA PHARMACEUTICALS INC [ ACAD ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP, Head of Research & Dev

3. Date of Earliest Transaction (Month/Day/Year)
07/29/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/29/2026		M		32,272	A	⁽¹⁾	35,552	D
Common Stock	07/30/2026		S⁽²⁾		16,508	D	$26.13	19,044	D
Common Stock	07/30/2026		S⁽²⁾		50	D	$26.17	18,994	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	07/29/2026		M			32,272	⁽³⁾	⁽³⁾	Common Stock	32,272	$0	32,272	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

2. The mandatory sales reported in this Form 4 were made to cover withholding taxes and tax related items imposed by the Issuer in connection with the vesting of restricted stock units, and it is intended to comply with the requirements of Rule 10b5-1(c)(1)(i)(B) under the Exchange Act and be interpreted to meet the requirements of Rule 10b5-1(c).

3. 50% of the restricted stock units vested on July 29, 2026 and 25% vest on each of July 29, 2027 and July 29, 2028.

	/s/ Jennifer J. Rhodes, Attorney-in-Fact	07/31/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0001861477-26-000005.

ACADIA PHARMACEUTICALS INC

Trade Summary

Price at the Time of the Trade

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

Price at the Time of the Trade

SEC Form 4