Sera Prognostics Insider Files to Sell Minor 225-Share Lot

Rhea-AI Filing Summary

Sera Prognostics, Inc. (SERA) submitted a Form 144 notice covering the planned sale of 225 Class A common shares through Morgan Stanley Smith Barney on 05 Aug 2025. At the indicated aggregate market value of $563, the transaction is de-minimis relative to the company’s 37,672,784 shares outstanding (≈0.0006%).

The seller—identified in subsequent tables as Mansoor Raza Mirza—previously sold 447 shares over the past three months for total gross proceeds of $980. The shares to be sold were acquired via RSU vesting on the planned sale date, implying the disposal is likely routine compensation-related rather than a directional view on the business. The filer affirms possession of no undisclosed material information, satisfying Rule 144 requirements.

Positive

• None.

Negative

• Insider disposition: Even though the amount is trivial, insider selling can be perceived as a slight negative signal.

Insights

Equity Analyst

TL;DR: Tiny insider sale (225 shares) is immaterial; no impact on SERA valuation or float.

The Form 144 signals a prospective sale by Mansoor Raza Mirza amounting to roughly $0.56k. With almost 38 million shares outstanding, dilution or supply pressure is negligible. Past three-month sales were similarly small. The disposition stems from RSU vesting, a routine liquidity event for employees. No new financial, operational, or strategic information is disclosed, and the seller certifies no undisclosed adverse data. Impact: neutral; investors typically disregard such micro-scale sales unless part of a broader pattern.

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
Class A Common	Morgan Stanley Smith Barney LLC 1 New York Plaza 38th Floor New York NY 10004	225	563	37672784	08/05/2025	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 *
Class A Common	08/05/2025	Restricted Stock Unit Vesting	Issuer			225	08/05/2025	Not Applicable

* 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
Mansoor Raza Mirza 2749 E. Parleys Way Suite 200 Salt Lake City UT 84109	Class A Common	05/08/2025	106	259
Mansoor Raza Mirza 2749 E. Parleys Way Suite 200 Salt Lake City UT 84109	Class A Common	06/06/2025	107	169
Mansoor Raza Mirza 2749 E. Parleys Way Suite 200 Salt Lake City UT 84109	Class A Common	07/07/2025	234	552

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 SERA shares are being sold under this Form 144?

The notice covers 225 Class A common shares.

What percentage of Sera Prognostics' outstanding shares does the sale represent?

Approximately 0.0006% of the 37,672,784 shares outstanding.

When is the planned sale date for the shares?

The filer indicates an approximate sale date of 05 Aug 2025.

Who is the seller named in the filing?

The tables list Mansoor Raza Mirza as the selling shareholder.

What was the method of share acquisition?

Shares were acquired via restricted-stock-unit (RSU) vesting.

Has the seller sold SERA shares recently?

Yes, 447 shares were sold over the past three months for gross proceeds of $980.