[144] Sera Prognostics, Inc. SEC Filing

Rhea-AI Filing Summary

Sera Prognostics, Inc. (SERA) Form 144 notice reports a proposed sale of 1,458 common shares by an insider through Morgan Stanley Smith Barney LLC on 09/02/2025 on NASDAQ. The filing shows an aggregate market value of $4,709.34 for the proposed sale and lists 37,094,109 shares outstanding. The shares to be sold were acquired as restricted stock units on 05/15/2024. The filer also reported three recent sales during the past three months by the same person totaling 18,313 shares for gross proceeds of $55,139.26 on 06/10/2025, 08/08/2025, and 08/29/2025.

Insights

Corporate Governance Expert

TL;DR: Insider plans a small RSU sale; recent 10b5-1 and voluntary sales suggest routine liquidity rather than a material governance event.

The filing documents a proposed sale of 1,458 shares derived from restricted stock units granted 05/15/2024. The planned transaction is being executed through Morgan Stanley Smith Barney LLC and shows a modest aggregate market value of $4,709.34 against 37,094,109 shares outstanding, indicating immaterial dilution or impact on market float. The filing also discloses multiple recent sales totaling 18,313 shares and $55,139.26 in proceeds, including one executed under a 10b5-1 plan, which typically signifies prearranged liquidity rather than opportunistic trading. No statements in the filing indicate undisclosed material nonpublic information.

Securities Analyst

TL;DR: Transactions are small relative to share count; unlikely to materially affect valuation or signal major insider shift.

The proposed sale size (1,458 shares, $4,709.34) is negligible versus the 37.09 million shares outstanding. Prior three-month dispositions of 18,313 shares produced $55,139.26, reflecting small-scale insider liquidity. The provenance of the shares (RSUs dated 05/15/2024) and the presence of a 10b5-1 sale reduce the likelihood that these trades convey new operational insights. From a market-impact perspective, these entries are routine and carry a neutral signal for investors when considered in isolation.

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 LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1458	4709.34	37094109	09/02/2025	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 *
Common	05/15/2024	Restricted Stock Units	Issuer			1458	05/15/2024	N/A

* 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
10b5-1 Sales for PAUL KEARNEY 2749 East Parleys Way, Suite 200 Salt Lake City UT 84109	Common	08/29/2025	10542	36791.58
PAUL KEARNEY 2749 East Parleys Way, Suite 200 Salt Lake City UT 84109	Common	08/08/2025	6460	16408.40
PAUL KEARNEY 2749 East Parleys Way, Suite 200 Salt Lake City UT 84109	Common	06/10/2025	1311	1940.28

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)