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Aerts Austin

Disclosed activity across 1 company

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305
SEC CIK
0001979974

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

SERA PROGNOSTICS, INC.

Report date August 31, 2026 · Filed September 02, 2026

Section 16 reporting ended · disclosed 2026-09-02. Current position is not established by this disclosure.

No balance rows disclosed in this filing.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
June 11, 2026 Filed Jun 15, 2026 20:08 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,037 $2.01 $4,094.37
Disclosure

SEC source: 0001979974-26-000008 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 301,190

F1 · shares: 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.

F2 · price: 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 $1.87 to $2.12, 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.

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June 09, 2026 Filed Jun 10, 2026 20:08 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,440 $2.08 $11,315.20
Disclosure

SEC source: 0001979974-26-000004 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,227

F1 · shares: 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.

F2 · price: 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 $1.96 to $2.21, 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.

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March 12, 2026 Filed Mar 13, 2026 22:27 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantStock Option (right to buy) · Derivative 68,550 $0.00 Strike: $1.99 $0.00
Disclosure

SEC source: 0001193125-26-106588 · ownership.xml · derivative · entry 2

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,550

Underlying: Class A Common Stock · 68,550 shares

Expires 2036-03-12

F2 · derivative.exercise_date: 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.

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March 12, 2026 Filed Mar 13, 2026 22:27 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 44,215 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-106588 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,667

F1 · shares: 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.

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March 11, 2026 Filed Mar 13, 2026 00:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 1,019 $2.04 $2,078.76
Disclosure

SEC source: 0001193125-26-104704 · ownership.xml · nonDerivative · entry 2

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,452

F1 · shares: 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 · price: 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 $1.90 to $2.30, 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.

Read SEC document
March 10, 2026 Filed Mar 13, 2026 00:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,069 $1.90 $11,531.10
Disclosure

SEC source: 0001193125-26-104704 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 265,471

F1 · shares: 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.

F2 · price: 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 $1.77 to $2.36, 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.

Read SEC document
March 09, 2026 Filed Mar 10, 2026 21:53 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 674 $1.96 $1,321.04
Disclosure

SEC source: 0001193125-26-100526 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 271,540

F1 · shares: 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.

F2 · price: 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 $1.87 to $2.03, 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.

Read SEC document
December 10, 2025 Filed Dec 12, 2025 00:56 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 873 $3.31 $2,889.63
Disclosure

SEC source: 0001193125-25-316496 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 272,214

F1 · shares: 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.

F2 · price: 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 $3.28 to $3.38, 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.

Read SEC document
December 09, 2025 Filed Dec 11, 2025 00:24 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,232 $3.04 $15,905.28
Disclosure

SEC source: 0001193125-25-314611 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 273,087

F1 · shares: 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.

F2 · price: 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 $2.91 to $3.10, 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.

Read SEC document
November 10, 2025 Filed Nov 12, 2025 21:23 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,351 $2.62 $16,639.62
Disclosure

SEC source: 0001193125-25-277702 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 278,319

F1 · shares: 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.

F2 · price: 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 $2.30 to $3.04, 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.

Read SEC document
September 11, 2025 Filed Sep 12, 2025 20:34 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 915 $3.13 $2,863.95
Disclosure

SEC source: 0000950170-25-114574 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 284,670

F1 · shares: 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.

F2 · price: 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 $3.05 to $3.24, 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.

Read SEC document
September 09, 2025 Filed Sep 9, 2025 23:30 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,263 $3.15 $16,578.45
Disclosure

SEC source: 0001979974-25-000009 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 285,585

F1 · shares: 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.

F2 · price: 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 $3.00 to $3.33, 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.

Read SEC document
August 08, 2025 Filed Aug 11, 2025 20:35 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,800 $2.54 $14,732.00
Disclosure

SEC source: 0001979974-25-000005 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 290,848

F1 · shares: 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.

F2 · price: 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 $2.28 to $2.73, 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.

Read SEC document
June 10, 2025 Filed Jun 12, 2025 00:13 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 945 $1.48 $1,398.60
Disclosure

SEC source: 0000950170-25-085024 · ownership.xml · nonDerivative · entry 2

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 296,648

F1 · shares: 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 · price: 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 $1.45 to $1.51, 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.

Read SEC document
June 09, 2025 Filed Jun 12, 2025 00:13 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,735 $1.43 $8,201.05
Disclosure

SEC source: 0000950170-25-085024 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,593

F1 · shares: 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.

F2 · price: 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 $1.37 to $1.51, 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.

Read SEC document
May 08, 2025 Filed May 9, 2025 23:16 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,374 $2.44 $15,552.56
Disclosure

SEC source: 0000950170-25-068386 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,328

F1 · shares: 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.

F2 · price: 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 $2.10 to $2.78, 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.

Read SEC document
March 07, 2025 Filed Mar 10, 2025 21:25 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 4,818 $4.12 $19,850.16
Disclosure

SEC source: 0000950170-25-036526 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 309,702

F1 · shares: 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.

F2 · price: 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.

Read SEC document
March 06, 2025 Filed Mar 8, 2025 00:28 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 540 $4.16 $2,246.40
Disclosure

SEC source: 0000950170-25-035799 · ownership.xml · nonDerivative · entry 2

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 314,520

F2 · shares: 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 · price: 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 $4.07 to $4.24, 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.

Read SEC document
March 05, 2025 Filed Mar 8, 2025 00:28 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantStock Option (right to buy) · Derivative 53,810 $0.00 Strike: $4.20 $0.00
Disclosure

SEC source: 0000950170-25-035799 · ownership.xml · derivative · entry 3

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,810

Underlying: Class A Common Stock · 53,810 shares

Expires 2035-03-05

F4 · derivative.exercise_date: 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.

Read SEC document
March 05, 2025 Filed Mar 8, 2025 00:28 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 37,650 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-035799 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 315,060

F1 · shares: 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.

Read SEC document
February 12, 2025 Filed Feb 14, 2025 21:10 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,915 $4.58 $27,090.70
Disclosure

SEC source: 0000950170-25-021183 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 277,410

F1 · shares: 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.

F2 · price: 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 $4.14 to $5.09, 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.

Read SEC document
January 10, 2025 Filed Jan 15, 2025 02:11 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,431 $8.06 $19,593.86
Disclosure

SEC source: 0000950170-25-005573 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 283,325

F1 · kind: The transaction(s) reported on this Form 4 was/were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2024.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.99 to $8.13, 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.

Read SEC document
December 10, 2024 Filed Dec 12, 2024 21:35 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,730 $7.41 $42,459.30
Disclosure

SEC source: 0000950170-24-135831 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 285,756

F1 · shares: 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.

F2 · price: 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 $7.11 to $8.15, 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.

Read SEC document
November 11, 2024 Filed Nov 12, 2024 22:02 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 7,179 $7.32 $52,550.28
Disclosure

SEC source: 0000950170-24-125639 · ownership.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 291,486

F1 · shares: 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.

F2 · price: 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 $6.30 to $8.74, 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.

Read SEC document
September 10, 2024 Filed Sep 10, 2024 20:55 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,056 $7.57 $38,273.92
Disclosure

SEC source: 0001534969-24-000188 · wk-form4_1726001706.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 298,665

F1 · kind: 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.

F2 · price: 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 $7.11 to $7.80, 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.

Read SEC document
August 07, 2024 Filed Aug 8, 2024 20:49 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,760 $7.42 $50,159.20
Disclosure

SEC source: 0001534969-24-000160 · wk-form4_1723150189.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 303,721

F1 · kind: 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.

F2 · price: 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 $6.94 to $7.58, 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.

Read SEC document
June 10, 2024 Filed Jun 11, 2024 20:50 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,415 $8.11 $43,915.65
Disclosure

SEC source: 0001534969-24-000139 · wk-form4_1718139011.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 310,481

F1 · kind: 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.

F2 · price: 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 $7.59 to $8.44, 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.

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May 08, 2024 Filed May 10, 2024 21:41 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,592 $9.59 $63,217.28
Disclosure

SEC source: 0001534969-24-000094 · wk-form4_1715377273.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 315,896

F1 · kind: 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.

F2 · price: 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 $9.14 to $10.55, 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.

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March 26, 2024 Filed Mar 27, 2024 00:00 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 8,092 $9.37 $75,822.04
Disclosure

SEC source: 0001534969-24-000064 · wk-form4_1711497592.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 322,488

F1 · kind: 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.

F2 · price: 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 $8.78 to $9.86, 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.

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March 06, 2024 Filed Mar 7, 2024 21:16 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 444 $9.02 $4,004.88
Disclosure

SEC source: 0001534969-24-000034 · wk-form4_1709846171.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 330,580

F1 · kind: 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.

F2 · price: 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 $8.78 to $9.45, 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.

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February 06, 2024 Filed Feb 7, 2024 21:56 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 9,786 $8.03 $78,581.58
Disclosure

SEC source: 0001534969-24-000007 · wk-form4_1707342965.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 331,024

F1 · kind: 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.

F2 · price: 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 $8.00 to $8.11, 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.

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November 06, 2023 Filed Nov 8, 2023 21:17 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 125,000 $0.00 $0.00
Disclosure

SEC source: 0001534969-23-000118 · wk-form4_1699478243.xml · nonDerivative · entry 2

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 340,810

F2 · shares: Each share is represented by a restricted stock unit ("RSU"). These RSUs vest over two years as follows: 1/8 of the original grant amount vests in quarterly installments for two years following the grant date, subject to the reporting person continuing to provide services to the issuer.

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November 06, 2023 Filed Nov 8, 2023 21:17 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 210,000 $0.00 $0.00
Disclosure

SEC source: 0001534969-23-000118 · wk-form4_1699478243.xml · nonDerivative · entry 1

Aerts Austin · CIK 0001979974 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 215,810

F1 · shares: 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 grant date, subject to the reporting person continuing to provide services to the issuer.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.