SUPN Form 144: Todd Horich sold 4,438 shares

SUPN reported a Form 144 disclosure showing an insider disposition.

Rhea-AI Filing Summary

SUPN reported a Form 144 disclosure showing an insider disposition. The filing lists a sale by Todd Horich of 4,438 shares of Common Stock on 03/09/2026 for $239,652.00. The filing also shows restricted stock vesting entries of 394 shares on 02/23/2026 and 4,045 shares on 02/28/2026, each described as employee stock unit awards under a registered plan.

Insights

Corporate Governance Analyst

Routine insider disposition reported via Form 144; transaction size is modest relative to most public-company floats.

The filing shows a disposition by Todd Horich of 4,438 shares on 03/09/2026 for $239,652.00. The sale is recorded under Form 144 procedures, which are required for restricted or control stock sales.

The excerpt also lists vesting of 394 shares on 02/23/2026 and 4,045 shares on 02/28/2026 as employee stock unit awards. Cashflow treatment and remaining beneficial ownership are not shown in the provided excerpt; subsequent filings may provide fuller position context.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What happened in the SUPN Form 144 filing?

The filing reports an insider sale by Todd Horich of 4,438 shares on 03/09/2026. The document also records vesting of 394 and 4,045 restricted shares in February 2026 under employee stock unit awards.

How much cash was reported for the insider sale in SUPN's Form 144?

The sale is listed at $239,652.00 for 4,438 shares sold on 03/09/2026. The excerpt ties the transaction to Form 144 reporting; it does not state who received the proceeds or additional sale details.

Do the entries show newly vested shares for SUPN employees?

Yes; the filing lists restricted stock vesting of 394 shares on 02/23/2026 and 4,045 shares on 02/28/2026. Each entry is described as an employee stock unit award under a registered plan.

Does the Form 144 excerpt show remaining ownership after the sale?

The provided excerpt does not disclose total post-transaction holdings or shares outstanding. It records the sale and vesting events but does not include the insider's remaining beneficial ownership figures.

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

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Accepted by SEC EDGAR 03/10/2026 - 04:18 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002117599
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SUPERNUS PHARMACEUTICALS, INC.
SEC File Number	001-35518
Address of Issuer	9715 Key West Avenue Rockville MARYLAND 20850
Phone	301-838-2500
Name of Person for Whose Account the Securities are To Be Sold	WILLIAM TODD HORICH
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	4439	244145.00	57581712	03/10/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/23/2026	Restricted stock vesting under a registered plan	Issuer			394	02/23/2026	Employee stock unit award(s)
Common	02/28/2026	Restricted stock vesting under a registered plan	Issuer			4045	02/28/2026	Employee stock unit award(s)

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
WILLIAM TODD HORICH 9715 Key West Avenue Rockville MD 20850	Common	03/09/2026	4438	239652.00

144: Remarks and Signature

Remarks
Date of Notice	03/10/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ William Todd Horich
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)