Supernus Pharmaceuticals (SUPN) SVP converts 1,650 PSUs; 797 shares withheld for taxes

Rhea-AI Filing Summary

SUPERNUS PHARMACEUTICALS, INC. executive Frank Mottola, SVP and Chief Technical Operations Officer, exercised 1,650 Performance Share Units into an equal number of common shares on August 12, 2026. In connection with this vesting, 797 common shares were withheld by the company at $46.57 per share to satisfy tax withholding requirements. The performance share units were granted on February 19, 2025 and vested based on individual performance objectives established on May 3, 2025. Mottola’s common stock holdings include 251 shares acquired through the company’s Employee Stock Purchase Plan.

Insider Trade Summary

Net Buyer: 853 shares

Net Buy 3 txns

Insider Mottola Frank

Role SVP, Chief Tech. Ops. Officer

Type	Security	Shares	Price	Value
Exercise	Performance Share Unit F3	1,650	$0.00	$0.00
Exercise	Common Stock F1	1,650	$0.00	$0.00
Tax Withholding	Common Stock F2	797	$46.57	$37K

Holdings After Transaction: Performance Share Unit — 0 shares (Direct); Common Stock — 19,544 shares (Direct)

Footnotes (3)

1. F1. Includes an aggregate of 251 shares acquired by the Reporting Person through the Issuer's Employee Stock Purchase Plan.
2. F2. Represents the number of shares of common stock withheld by the Company to satisfy tax withholding requirements in connection with the vesting of Performance Share Units.
3. F3. On February 19, 2025, the Reporting Person was awarded Performance Share Units, a portion of which vested upon the achievement of individual performance objectives within a defined performance period, which objectives were established on May 3, 2025.

Key Figures

Performance Share Units exercised: 1,650 units Shares withheld for taxes: 797 shares Tax withholding price: $46.57 per share +1 more

4 metrics

Performance Share Units exercised 1,650 units Converted into 1,650 shares of common stock on August 12, 2026

Shares withheld for taxes 797 shares Common stock withheld to satisfy tax withholding at vesting

Tax withholding price $46.57 per share Price used for 797 shares withheld to cover tax liability

ESPP shares in holdings 251 shares Common shares acquired through Employee Stock Purchase Plan

Key Terms

Performance Share Unit, Employee Stock Purchase Plan, tax withholding requirements

3 terms

Performance Share Unit financial

"The Reporting Person was awarded Performance Share Units, a portion of which vested"

A performance share unit (PSU) is a form of executive or employee pay that promises shares (or the cash value of shares) only if the company meets specific performance targets over a set period. Think of it like a bonus cheque that only arrives if the company hits agreed goals — it aligns managers’ rewards with business results and signals to investors how leadership is being incentivized to grow value over time.

Employee Stock Purchase Plan financial

"Includes an aggregate of 251 shares acquired ... through the Issuer's Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

tax withholding requirements financial

"shares of common stock withheld by the Company to satisfy tax withholding requirements"

FAQ

What insider equity transaction did SUPN executive Frank Mottola report on August 12, 2026?

Frank Mottola reported exercising 1,650 Performance Share Units into 1,650 shares of Supernus common stock on August 12, 2026, reflecting the vesting of previously granted performance-based equity awards.

How many SUPN shares were withheld for taxes in Frank Mottola’s August 2026 transaction?

The company withheld 797 shares of common stock from Frank Mottola at $46.57 per share to satisfy tax withholding requirements related to the vesting of his Performance Share Units.

What equity award did Frank Mottola of SUPN exercise in this Form 4 filing?

Frank Mottola exercised 1,650 Performance Share Units, converting them into 1,650 shares of Supernus common stock. These units were part of a February 19, 2025 award tied to individual performance objectives.

When were the Performance Share Units granted and performance objectives set for SUPN’s Frank Mottola?

Frank Mottola was awarded Performance Share Units on February 19, 2025, with individual performance objectives established on May 3, 2025. A portion of the award vested after achievement of those objectives within a defined performance period.

How many SUPN shares has Frank Mottola acquired through the Employee Stock Purchase Plan?

Frank Mottola’s reported holdings include 251 shares of Supernus common stock acquired through the company’s Employee Stock Purchase Plan, as noted in the Form 4 footnotes.

Does the SUPN Form 4 for Frank Mottola indicate a discretionary sale of shares?

The filing shows 797 shares withheld to cover tax obligations at vesting, coded as a tax-withholding disposition. It does not report any discretionary open-market sales by Frank Mottola in this transaction set.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/14/2026 - 05:12 PM Accepted by SEC EDGAR 08/14/2026 - 05:10 PM Learn about SEC filing dates

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^*

Mottola Frank

(Last) (First) (Middle)

C/O SUPERNUS PHARMACEUTICALS, INC.,

9715 KEY WEST AVENUE

(Street)

ROCKVILLE MARYLAND 20850

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SUPERNUS PHARMACEUTICALS, INC. [ SUPN ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Chief Tech. Ops. Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026

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

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

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

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	08/12/2026		M		1,650	A	$0	20,341(1)	D
Common Stock	08/12/2026		F		797(2)	D	$46.57	19,544	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
Performance Share Unit	$0	08/12/2026		M			1,650	(3)	(3)	Common Stock	1,650	$0	0	D

Explanation of Responses:

1. Includes an aggregate of 251 shares acquired by the Reporting Person through the Issuer's Employee Stock Purchase Plan.

2. Represents the number of shares of common stock withheld by the Company to satisfy tax withholding requirements in connection with the vesting of Performance Share Units.

3. On February 19, 2025, the Reporting Person was awarded Performance Share Units, a portion of which vested upon the achievement of individual performance objectives within a defined performance period, which objectives were established on May 3, 2025.

Remarks:

	/s/ Timothy C. Dec, as attorney-in-fact	08/14/2026
	** 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: SEC 1474 (03-26)