Elvia Cowan registers 3,000-share sale (PCVX) after option exercise

Rhea-AI Filing Summary

Elvia Cowan filed a Form 144 reporting the proposed sale of 3,000 shares of Common Stock on 04/07/2026, attributed to an exercise of stock options with cash payment. The filing also lists prior sales: 2,500 shares on 03/11/2026 for $146,481.75 and 1,892 shares on 03/17/2026 for $105,146.20.

Insights

Securities Compliance Expert

Routine Rule 144 sale notice by an affiliate reporting option exercise and recent dispositions.

The filing records a 3,000-share sale tied to an exercise of stock options and two recent dispositions on 03/11/2026 and 03/17/2026 with exact proceeds shown. This pattern is typical when affiliates convert derivatives and register shares for resale.

Key dependencies include holding-period and volume limitations under Rule 144; the filing documents sale intent and cash consideration. Subsequent transaction confirmations will appear in market-trade reports or follow-up filings.

Key Figures

Proposed shares to be sold: 3,000 shares Prior sale — 03/11/2026: 2,500 shares Proceeds — 03/11/2026: $146,481.75 +3 more

6 metrics

Proposed shares to be sold 3,000 shares Securities To Be Sold on 04/07/2026

Prior sale — 03/11/2026 2,500 shares Sale on 03/11/2026 for $146,481.75

Proceeds — 03/11/2026 $146,481.75 Proceeds from 2,500-share sale on 03/11/2026

Prior sale — 03/17/2026 1,892 shares Sale on 03/17/2026 for $105,146.20

Proceeds — 03/17/2026 $105,146.20 Proceeds from 1,892-share sale on 03/17/2026

Broker/Intermediary listed UBS Financial Services, Inc. Filer information address provided

Key Terms

Form 144, Exercise of Stock Options, Cash, Securities To Be Sold

4 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Exercise of Stock Options financial

"Securities To Be Sold | Exercise of Stock Options"

Cash financial

"04/07/2026 | Exercise of Stock Options | Issuer | Cash"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

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	UBS Financial Services, Inc 11 Madison Ave 4th Floor New York NY 10010	3000	180000.00	143920361	04/07/2026	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	04/07/2026	Exercise of Stock Options	Issuer			3000	04/07/2026	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
Elvia Cowan 825 INDUSTRIAL ROAD, STE. 300 SAN CARLOS CA 94070	Common	03/11/2026	2500	146481.75
Elvia Cowan 825 INDUSTRIAL ROAD STE. 300 San Carlos CA 94070	Common	03/17/2026	1892	105146.20

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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 Elvia Cowan's Form 144 for PCVX report?

It reports a proposed sale of 3,000 common shares on 04/07/2026. The Form 144 states the sale arises from an exercise of stock options and lists prior sales of 2,500 and 1,892 shares with their proceeds.

Does the Form 144 show how much Elvia Cowan received for prior sales?

Yes — prior sales listed include $146,481.75 and $105,146.20. These amounts correspond to dispositions of 2,500 shares on 03/11/2026 and 1,892 shares on 03/17/2026 respectively.

What is the transaction type listed for the 3,000 shares on 04/07/2026?

The transaction is described as an "Exercise of Stock Options" with cash. The filing ties the 3,000-share sale to option exercise and indicates the issuer handled the cash payment.

Who is the broker or intermediary named in the filing for this Form 144?

UBS Financial Services, Inc. is listed in the filer information. The filing shows UBS Financial Services, Inc. with an address and NASDAQ venue information associated with the securities transaction.

Does the Form 144 confirm the sales have completed?

The Form 144 reports intent and past dispositions but not trade confirmations for the 3,000 shares. It shows two completed sales with proceeds and the proposed 04/07/2026 sale tied to an option exercise.