Zhenya Lindgardt - 12 Mar 2026 Form 4 Insider Report for SERA PROGNOSTICS, INC. (SERA)

Role: Chief Executive Officer, Director
Signature: /s/ Benjamin G. Jackson, Attorney-in-fact
Issuer symbol: SERA
Transactions as of: 12 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 13 Mar 2026, 18:28:36 UTC
Previous filing: 12 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lindgardt Zhenya	Chief Executive Officer, Director	C/O SERA PROGNOSTICS, INC., 2749 EAST PARLEYS WAY, SUITE 200, SALT LAKE CITY	/s/ Benjamin G. Jackson, Attorney-in-fact	13 Mar 2026	0001891299

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SERA	Class A Common Stock	Award		+154,440	+21%	$0.000000^*	892,754	12 Mar 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SERA	Stock Option (right to buy)	Award		+239,442		$0.000000^*	239,442	12 Mar 2026	Class A Common Stock	239,442	$1.99	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each share is represented by a restricted stock unit ("RSU"). These RSUs vest over four years as follows: 1/16 of the original grant amount vests in quarterly installments for four years following the vesting commencement date, which is March 10, 2026, subject to the Reporting Person continuing to provide services to the issuer.
F2	These stock options vest over four years as follows: 1/48 of the original grant amount vests in monthly installments for four years following the vesting commencement date, which is March 10, 2026, subject to the Reporting Person continuing to provide services to the issuer.