Zhenya Lindgardt - Mar 6, 2025 Form 4 Insider Report for SERA PROGNOSTICS, INC. (SERA)

Role: Chief Executive Officer, Director
Signature: /s/ Benjamin G. Jackson, Attorney-in-fact
Stock symbol: SERA
Transactions as of: Mar 6, 2025
Transactions value $: -$122,455
Form type: 4
Date filed: 3/10/2025, 05:26 PM
Previous filing: Feb 14, 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SERA	Class A Common Stock	Award	$0	+127K	+16.28%	$0.00	906K	Mar 6, 2025	Direct	F1
transaction	SERA	Class A Common Stock	Sale	-$122K	-29.7K	-3.28%	$4.12	877K	Mar 7, 2025	Direct	F2, F3

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	$0	+181K		$0.00	181K	Mar 6, 2025	Class A Common Stock	181K	$4.15	Direct	F4

* 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, 2025, subject to the Reporting Person continuing to provide services to the issuer.
F2	Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs"). 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.
F3	The price reported is a weighted average price. These shares were sold as part of a block trade in multiple transactions at prices ranging from $4.02 to $4.33, inclusive. The Reporting Person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price with regard to the block trade.
F4	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, 2025, subject to the Reporting Person continuing to provide services to the issuer.