TapewireFind a company

person · Reporting owner

Harrison Robert Gardner

Disclosed activity across 1 company

Tapewire entity
49358
SEC CIK
0001421563

Export transaction history ↓

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 March 12, 2026 · Filed May 06, 2026

Section 16 reporting ended · disclosed 2026-05-06. Current position is not established by this disclosure.

No balance rows disclosed in this filing.

Transaction history

JSON API
Reset

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
March 11, 2026 Filed Mar 13, 2026 00:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 716 $2.04 $1,460.64
Disclosure

SEC source: 0001193125-26-104707 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,712

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 $1.90 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 09, 2026 Filed Mar 10, 2026 21:53 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 3,360 $1.96 $6,585.60
Disclosure

SEC source: 0001193125-26-100528 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,428

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
February 24, 2026 Filed Feb 24, 2026 23:10 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $2.34 $4,680.00
Disclosure

SEC source: 0001193125-26-067712 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,788

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.23 to $2.45, 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.

Read SEC document
January 27, 2026 Filed Jan 27, 2026 22:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $2.97 $5,940.00
Disclosure

SEC source: 0001193125-26-024859 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 82,788

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.92 to $3.06, 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 30, 2025 Filed Dec 30, 2025 23:41 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $3.00 $6,000.00
Disclosure

SEC source: 0001193125-25-337380 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 84,788

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.88 to $3.25, 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, 2025 Filed Dec 12, 2025 00:56 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 616 $3.31 $2,038.96
Disclosure

SEC source: 0001193125-25-316499 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,788

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 02, 2025 Filed Dec 3, 2025 21:14 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $2.93 $5,860.00
Disclosure

SEC source: 0001193125-25-306710 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,404

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.81 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.

Read SEC document
November 10, 2025 Filed Nov 12, 2025 21:24 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,528 $2.62 $17,103.36
Disclosure

SEC source: 0001193125-25-277705 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,404

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
November 04, 2025 Filed Nov 4, 2025 23:35 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $3.07 $6,140.00
Disclosure

SEC source: 0001193125-25-265180 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 95,932

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.02 to $3.15, 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.

Read SEC document
October 07, 2025 Filed Oct 8, 2025 20:35 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $3.18 $6,360.00
Disclosure

SEC source: 0001193125-25-234568 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,932

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.04 to $3.28, 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
September 11, 2025 Filed Sep 12, 2025 20:35 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 645 $3.13 $2,018.85
Disclosure

SEC source: 0000950170-25-114576 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,932

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 22:51 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,000 $3.05 $6,100.00
Disclosure

SEC source: 0001421563-25-000009 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 100,577

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.99 to $3.12, 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.

Read SEC document
August 20, 2025 Filed Aug 20, 2025 22:55 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,000 $2.22 $13,320.00
Disclosure

SEC source: 0001421563-25-000007 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 102,577

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 21, 2025.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.17 to $2.25, 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
August 08, 2025 Filed Aug 11, 2025 20:36 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,962 $2.54 $15,143.48
Disclosure

SEC source: 0001421563-25-000005 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,577

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 00:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 667 $1.48 $987.16
Disclosure

SEC source: 0000950170-25-085021 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,539

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 $1.45 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
May 08, 2025 Filed May 9, 2025 23:17 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 6,551 $2.44 $15,984.44
Disclosure

SEC source: 0000950170-25-068388 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,206

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 21:26 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 3,874 $4.16 $16,115.84
Disclosure

SEC source: 0000950170-25-036529 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 121,757

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 14, 2024.

F2 · price: The price reported is a weighted average price. These shares were sold 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.

Read SEC document
March 06, 2025 Filed Mar 8, 2025 00:29 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 3,251 $4.16 $13,524.16
Disclosure

SEC source: 0000950170-25-035801 · ownership.xml · nonDerivative · entry 2

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,631

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 00:29 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantStock Option (right to buy) · Derivative 36,830 $0.00 Strike: $4.20 $0.00
Disclosure

SEC source: 0000950170-25-035801 · ownership.xml · derivative · entry 3

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,830

Underlying: Class A Common Stock · 36,830 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 00:29 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 25,770 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-035801 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,882

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 13, 2025 Filed Feb 14, 2025 21:17 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 3,610 $4.28 $15,450.80
Disclosure

SEC source: 0000950170-25-021248 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 103,112

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 14, 2024.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.20 to $4.36, 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.

Read SEC document
February 12, 2025 Filed Feb 14, 2025 21:11 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 7,297 $4.58 $33,420.26
Disclosure

SEC source: 0000950170-25-021187 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,722

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
February 11, 2025 Filed Feb 14, 2025 00:45 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 554 $3.97 $2,199.38
Disclosure

SEC source: 0000950170-25-020182 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 114,019

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 14, 2024.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.92 to $3.99, 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
January 13, 2025 Filed Jan 15, 2025 02:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,264 $6.47 $14,648.08
Disclosure

SEC source: 0000950170-25-005575 · ownership.xml · nonDerivative · entry 3

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 114,573

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 14, 2024.

F4 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.16 to $6.74, 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.

Read SEC document
January 10, 2025 Filed Jan 15, 2025 02:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 1,837 $8.01 $14,714.37
Disclosure

SEC source: 0000950170-25-005575 · ownership.xml · nonDerivative · entry 2

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 116,837

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 14, 2024.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.93 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
January 10, 2025 Filed Jan 15, 2025 02:12 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 12,372 $7.30 $90,315.60
Disclosure

SEC source: 0000950170-25-005575 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 118,674

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 14, 2024.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.93 to $7.92, 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
November 11, 2024 Filed Nov 12, 2024 22:03 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 4,727 $7.32 $34,601.64
Disclosure

SEC source: 0000950170-24-125644 · ownership.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,046

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
August 07, 2024 Filed Aug 8, 2024 20:50 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,022 $7.42 $37,263.24
Disclosure

SEC source: 0001534969-24-000165 · wk-form4_1723150247.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,773

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
May 08, 2024 Filed May 10, 2024 21:40 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 4,902 $9.59 $47,010.18
Disclosure

SEC source: 0001534969-24-000092 · wk-form4_1715377248.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,795

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.

Read SEC document
March 06, 2024 Filed Mar 7, 2024 21:15 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 2,138 $9.02 $19,284.76
Disclosure

SEC source: 0001534969-24-000032 · wk-form4_1709846139.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,697

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.

Read SEC document
February 06, 2024 Filed Feb 7, 2024 21:56 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,665 $8.03 $45,489.95
Disclosure

SEC source: 0001534969-24-000009 · wk-form4_1707342992.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,835

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.

Read SEC document
November 06, 2023 Filed Nov 8, 2023 21:16 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 125,000 $0.00 $0.00
Disclosure

SEC source: 0001534969-23-000113 · wk-form4_1699478174.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 153,500

F1 · 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.

Read SEC document
June 05, 2023 Filed Jun 6, 2023 20:07 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 SaleClass A Common Stock 5,000 $3.23 $16,150.00
Disclosure

SEC source: 0001534969-23-000059 · wk-form4_1686082069.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,500

F1 · balance_after: The Reporting Person purchased 5,000 shares of Class A Common Stock pursuant to the Sera Prognostics, Inc. 2021 Employee Stock Purchase Plan ("ESPP"), for the purchase period of December 1, 2022 to May 31, 2023.

Read SEC document
March 06, 2023 Filed Mar 8, 2023 00:50 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantStock Option (right to buy) · Derivative 45,000 $0.00 Strike: $3.80 $0.00
Disclosure

SEC source: 0001534969-23-000019 · wf-form4_167823663886064.xml · derivative · entry 2

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,000

Underlying: Class A Common Stock · 45,000 shares

Expires 2033-03-06

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 6, 2023, subject to the reporting person continuing to provide services to the issuer.

Read SEC document
March 06, 2023 Filed Mar 8, 2023 00:50 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantClass A Common Stock 28,500 $0.00 $0.00
Disclosure

SEC source: 0001534969-23-000019 · wf-form4_167823663886064.xml · nonDerivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,500

F1 · shares: Each share is represented by a restricted stock unit ("RSU"). These RSUs vest over four years as follows: 1/4 of the original grant amount vests in annual installments for four years following the vesting commencement date, which is March 6, 2023, subject to the reporting person continuing to provide services to the issuer.

Read SEC document
March 23, 2022 Filed Mar 25, 2022 20:34 UTC SERA PROGNOSTICS, INC. SERA · Entity 304 GrantStock Option (right to buy) · Derivative 33,698 $0.00 Strike: $3.75 $0.00
Disclosure

SEC source: 0001534969-22-000021 · wf-form4_164824047308209.xml · derivative · entry 1

Harrison Robert Gardner · CIK 0001421563 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,698

Underlying: Class A Common Stock · 33,698 shares

Expires 2032-03-23

F1 · derivative.exercise_date: These stock options vest over four years beginning on the grant date of March 23, 2022 as follows: 15% of the original grant amount vests in equal monthly installments over the first year following the grant date, 20% of the original grant amount vests in equal monthly installments over the second year following the grant date, 25% of the original grant amount vests in equal monthly installments over the third year following the grant date, and 40% of the original grant amount vests in equal monthly installments over the fourth year following the grant date, subject to the reporting person continuing to provide services to the issuer.

Read SEC document

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