SERA: Rule 144 notice for 3,119 Class A shares

SERA filed a Rule 144 notice for Class A Common shares tied to a Restricted Stock Unit vesting of 3,119 shares on 03/09/2026.

Rhea-AI Filing Summary

SERA filed a Rule 144 notice for Class A Common shares tied to a Restricted Stock Unit vesting of 3,119 shares on 03/09/2026. The broker listed is Morgan Stanley Smith Barney LLC. The filing also records a prior reported sale by Benjamin Jackson of 892 shares on 12/10/2025.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did SERA report in the Rule 144 filing?

It reported a Rule 144 notice for 3,119 Class A Common shares. The filing ties the shares to a Restricted Stock Unit vesting on 03/09/2026 and names Morgan Stanley Smith Barney LLC as the broker handling the transaction.

Who is the broker listed on SERA's Form 144?

Morgan Stanley Smith Barney LLC is listed as the broker. The filing gives the broker address at 1 New York Plaza, 38th Floor, New York, NY, and associates the broker with the securities transaction dated 03/09/2026.

Does the filing show any recent insider sales for SERA?

Yes. The filing records a prior sale by Benjamin Jackson of 892 shares on 12/10/2025. No additional sale proceeds, prices, or other transaction details are provided in the excerpt.

Are the 3,119 shares in SERA's filing newly issued or vested awards?

The filing links the 3,119 Class A Common shares to Restricted Stock Unit vesting. It explicitly states the disposition method as "Restricted Stock Unit Vesting" with an issuer-related designation on 03/09/2026.

What exchange is SERA listed on according to the filing?

The filing lists NASDAQ as the exchange for the Class A Common shares. The exchange designation appears alongside the security description and the transaction date of 03/09/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 03/10/2026 - 05:51 PM EDT Learn about SEC filing dates

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	0001779964
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Sera Prognostics, Inc.
SEC File Number	001-40606
Address of Issuer	2749 East Parleys Way Suite 200 Salt Lake City UTAH 84109
Phone	(801)-990-0520
Name of Person for Whose Account the Securities are To Be Sold	Jackson Benjamin
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	Officer

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	3119	6123	38594793	03/09/2026	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 *
Class A Common	03/09/2026	Restricted Stock Unit Vesting	Issuer			3119	03/09/2026	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
Benjamin Jackson 2749 E. Parleys Way Suite 200 Salt Lake City UT 84109	Class A Common	12/10/2025	892	2950

144: Remarks and Signature

Remarks	The sale on this form represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by sell to cover transactions and does not represent a discretionary transaction by the Reporting Person.
Date of Notice	03/10/2026
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	/s/ Benjamin G. Jackson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)