Planned sale of 34,438 PTGX shares disclosed (NASDAQ: PTGX)

Rhea-AI Filing Summary

A holder of PTGX common stock has filed a notice of proposed sale under Rule 144. The filing covers 34,438 shares of common stock, to be sold through Morgan Stanley Smith Barney on the Nasdaq, with an indicated aggregate market value of $2,840,446.24. The filing notes that there were 62,515,666 shares of this class outstanding at the time of the notice.

The shares to be sold were acquired on 01/20/2026 through the vesting of restricted stock under a registered plan, with “services rendered” listed as the form of payment. The person for whose account the securities are to be sold represents that they do not know of any material adverse, non‑public 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	34438	2840446.24	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			34438	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

How many PTGX shares are planned to be sold under this Form 144?

The notice covers the proposed sale of 34,438 shares of PTGX common stock through a broker.

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

The filing reports an aggregate market value of $2,840,446.24 for the 34,438 PTGX common shares to be sold.

How and when were the PTGX shares in this Form 144 acquired?

The 34,438 common shares were acquired on 01/20/2026 through restricted stock vesting under a registered plan, with “services rendered” listed as the consideration.

On which exchange are the PTGX shares in this Form 144 expected to be sold?

The proposed sale is listed for execution on the Nasdaq securities exchange.

How many PTGX shares of this class were outstanding at the time of the notice?

The filing states that 62,515,666 shares of the relevant class of PTGX common stock were outstanding when the notice was prepared.

What does the signer of this PTGX Form 144 represent about non-public information?

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.