Planned sale of 8,588 PTGX (NASDAQ: PTGX) shares disclosed in Form 144

Rhea-AI Filing Summary

A holder of the issuer’s common stock has filed a notice of proposed sale under Rule 144 for 8,588 shares. The planned sale is to be executed through Morgan Stanley Smith Barney on or about 01/20/2026, with an indicated aggregate market value of 708,338.24. The issuer reports 62,515,666 shares outstanding, which is a baseline figure for the company’s equity.

The shares to be sold were acquired as restricted stock vesting under a registered plan from the issuer on 01/20/2026, as compensation for services rendered. By signing the notice, the seller represents that they do not know of any undisclosed material adverse information about the issuer’s current or prospective operations.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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 Operations Department 2000 Westchester Ave Purchase NY 10577-2530	8588	708338.24	62515666	01/20/2026	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	01/20/2026	Restricted stock vesting under a registered plan	Issuer			8588	01/20/2026	Services Rendered

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the Form 144 filing for PTGX disclose?

The Form 144 shows that a holder of common stock of the issuer intends to sell 8,588 shares under Rule 144 through Morgan Stanley Smith Barney, with an aggregate market value of 708,338.24 and a planned sale date of 01/20/2026.

How many PTGX shares are planned to be sold and on which exchange?

The notice covers the proposed sale of 8,588 common shares, to be sold on NASDAQ as indicated in the filing.

How were the PTGX shares being sold under Form 144 acquired?

The securities were acquired as restricted stock vesting under a registered plan from the issuer on 01/20/2026, in exchange for services rendered.

What is the aggregate market value of the PTGX shares in this Form 144?

The Form 144 lists an aggregate market value of 708,338.24 for the 8,588 common shares proposed to be sold.

How many PTGX shares are outstanding according to this filing?

The Form 144 indicates that there are 62,515,666 common shares outstanding for the issuer at the time of the notice.

What representation does the selling person make in the PTGX Form 144?

By signing, the person for whose account the securities are to be sold represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.

Which broker is handling the proposed PTGX Rule 144 sale?

The filing lists Morgan Stanley Smith Barney Operations Department, located at 2000 Westchester Ave, Purchase, NY 10577-2530, as the broker for the proposed sale.