PTGX files Form 144 to sell 15,000 shares

PTGX submitted a Form 144 reporting the sale of 15,000 shares via a stock option exercise to be settled for cash on 03/26/2026.

Rhea-AI Filing Summary

PTGX submitted a Form 144 reporting the sale of 15,000 shares via a stock option exercise to be settled for cash on 03/26/2026. The filing lists prior open-market dispositions by Arturo Molina, including 5,000 shares on 01/27/2026 and 13,151 shares on 01/23/2026.

Insights

Securities Compliance Attorney

Routine Rule 144 notice of resale tied to an option exercise and prior dispositions.

The filing records a planned sale of 15,000 shares via a stock option exercise with cash settlement on 03/26/2026. Rule 144 notices commonly disclose intended resales and related past dispositions to satisfy resale conditions.

Cash‑flow treatment is explicit as cash; subsequent SEC filings or broker reports will show execution details. Timing and net proceeds depend on settlement and market transactions.

FAQ

What does PTGX's Form 144 disclose?

It discloses a planned resale of 15,000 shares via a stock option exercise to be settled for cash on 03/26/2026. The filing lists prior dispositions by the same holder in January 2026.

Who is the seller named in the PTGX Form 144?

The seller shown is Arturo Molina, whose address appears on the filing. The document lists multiple prior sales by Mr. Molina during January 2026 with specific dates and share counts.

Does the Form 144 state how proceeds will be used?

The filing specifies settlement method as cash, but it does not state the use of proceeds. Form 144s typically report resale intent and method rather than intended use of sale proceeds.

Are previous sales by the reporting holder shown?

Yes. The filing lists prior sales by Arturo Molina on 01/20/2026, 01/23/2026, 01/26/2026, and 01/27/2026, with each transaction's share count and gross proceeds.

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

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Accepted by SEC EDGAR 03/26/2026 - 04:01 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	0001398940
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	PROTAGONIST THERAPEUTICS, INC.
SEC File Number	001-37852
Address of Issuer	7707 Gateway Boulevard, Suite 140 Newark CALIFORNIA 94560-1160
Phone	(510) 474-0170
Name of Person for Whose Account the Securities are To Be Sold	ARTURO MOLINA
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	15000	1571919.00	63808716	03/26/2026	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	03/26/2026	Stock Option Exercise	Issuer			15000	03/26/2026	Cash

* 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
ARTURO MOLINA 7707 Gateway Boulevard, Suite 140 Newark CA 94560-1160	Common	01/27/2026	5000	410000.00
ARTURO MOLINA 7707 Gateway Boulevard, Suite 140 Newark CA 94560-1160	Common	01/26/2026	5000	411396.00
ARTURO MOLINA 7707 Gateway Boulevard, Suite 140 Newark CA 94560-1160	Common	01/23/2026	13151	1097115.60
ARTURO MOLINA 7707 Gateway Boulevard, Suite 140 Newark CA 94560-1160	Common	01/20/2026	9514	784702.35

144: Remarks and Signature

Remarks
Date of Notice	03/26/2026
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/ Arturo Molina
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)