Sera Prognostics director files Form 4 with no trades

SERA PROGNOSTICS, INC. director Elliott Jeffrey Thomas filed a Form 4 reporting no stock transactions or holdings in this filing.

Rhea-AI Filing Summary

SERA PROGNOSTICS, INC. director Elliott Jeffrey Thomas filed a Form 4 reporting no stock transactions or holdings in this filing. The summary data show zero purchases, zero sales, zero derivative exercises, and no gifts, tax withholdings, or restructuring-related transfers.

Key Figures

Shares purchased: 0 shares Shares sold: 0 shares Derivative exercises: 0 shares +3 more

6 metrics

Shares purchased 0 shares buyShares in transaction summary

Shares sold 0 shares sellShares in transaction summary

Derivative exercises 0 shares exerciseShares in transaction summary

Gifts 0 shares giftShares in transaction summary

Tax-withholding dispositions 0 shares taxWithholdingShares in transaction summary

Net buy/sell shares 0 shares netBuySellShares in transaction summary

Key Terms

Form 4, reporting person, derivativeTransactionCount, netBuySellDirection

4 terms

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

reporting person regulatory

""reportingPersons": [{"name": "Elliott Jeffrey Thomas""

derivativeTransactionCount financial

""derivativeTransactionCount": 0"

netBuySellDirection financial

""netBuySellDirection": "neutral""

FAQ

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

What does Elliott Jeffrey Thomas’s latest Form 4 for SERA show?

The Form 4 for SERA PROGNOSTICS, INC. reports no transactions by director Elliott Jeffrey Thomas. Summary fields show zero purchases, sales, exercises, gifts, or other changes in beneficial ownership in this filing.

Were any SERA shares bought or sold in this Elliott Jeffrey Thomas Form 4?

No. The Form 4 transaction summary lists buyShares of 0 and sellShares of 0. This indicates no open-market purchases or sales of SERA PROGNOSTICS, INC. stock were reported in this filing.

Does the SERA Form 4 show any option or derivative exercises?

No. The derivative-related fields show exerciseCount of 0, exerciseShares of 0, and an empty derivativeSummary. This means no options or other derivative securities were exercised or transacted in this Form 4.

Are there any gifts or tax-withholding transactions in this SERA Form 4?

No. The summary lists giftShares of 0 and taxWithholdingShares of 0. This indicates there were no reportable gifts of SERA shares or shares withheld to cover taxes in this filing.

What is the overall net trading direction in this SERA Form 4?

The overall direction is neutral. The Form 4 transaction summary shows netBuySellShares of 0 and a netBuySellDirection labeled "neutral," reflecting no net change in reported share ownership.

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

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Accepted by SEC EDGAR 06/04/2026 - 04:16 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Elliott Jeffrey Thomas

(Last) (First) (Middle)

C/O SERA PROGNOSTICS, INC.

2749 EAST PARLEYS WAY, SUITE 200

(Street)

SALT LAKE CITY UTAH 84109

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SERA PROGNOSTICS, INC. [ SERA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

The Reporting Person did not stand for re-election to the board of directors of Sera Prognostics, Inc. at the end of his current term at the 2026 Annual Meeting of Stockholders held on June 4, 2026. As a result, the Reporting Person is no longer subject to Section 16 in connection with his transactions in the equity securities of Sera Prognostics, Inc. and therefore will no longer report any such transactions on Form 4 or Form 5.

	/s/ Benjamin G. Jackson, Attorney-in-fact	06/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)