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person · Reporting owner

van den Boom Esther

Disclosed activity across 2 companies

Tapewire entity
88274
SEC CIK
0001603563

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Bolt Projects Holdings, Inc.BSLK · Entity 65458DirectorAugust 13, 2024August 15, 2024
Tyra Biosciences, Inc.TYRA · Entity 4680Chief Financial OfficerSeptember 15, 2022September 19, 2022

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.

Bolt Projects Holdings, Inc.

Report date August 13, 2024 · Filed August 15, 2024

This filing explicitly reported no securities owned.

Tyra Biosciences, Inc.

Report date September 15, 2022 · Filed September 19, 2022

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect121,897 Reported balance After 2022-09-15 transaction · row 1
1 source row

Row 1 · 2022-09-15 · Grant · Acquired 1,452 · Balance 121,897

F1: These shares were acquired under the Issuer's 2021 Employee Stock Purchase Plan.

Common StockSEC Table I · non-derivativeIndirectSee footnote118,645 Reported balance Holding disclosure · report date 2022-09-15 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 118,645

F2: Represents shares held by van den Boom Ventures LLC, of which the spouse of the Reporting Person is the managing member.

Filing footnotes · ownership attribution and instrument terms

F1: These shares were acquired under the Issuer's 2021 Employee Stock Purchase Plan.

F2: Represents shares held by van den Boom Ventures LLC, of which the spouse of the Reporting Person is the managing member.

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
September 15, 2022 Filed Sep 19, 2022 22:17 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantCommon Stock 1,452 $7.66 $11,120.14
Disclosure

SEC source: 0001209191-22-050613 · doc4.xml · nonDerivative · entry 1

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,897

F1 · kind: These shares were acquired under the Issuer's 2021 Employee Stock Purchase Plan.

Read SEC document
September 06, 2022 Filed Sep 8, 2022 21:53 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantStock Option (Right to Buy) · Derivative 89,054 $0.00 Strike: $7.14 $0.00
Disclosure

SEC source: 0001209191-22-049219 · doc4.xml · derivative · entry 4

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,054

Underlying: Common Stock · 89,054 shares

Expires 2032-09-05

F4 · derivative.exercise_date: 1/36th of the shares subject to the option vest monthly following September 6, 2022, the vesting commencement date, subject to the Reporting Person's continuous service to the Issuer through each vesting date.

Read SEC document
September 06, 2022 Filed Sep 8, 2022 21:53 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantStock Option (Right to Buy) · Derivative 105,000 $0.00 Strike: $7.14 $0.00
Disclosure

SEC source: 0001209191-22-049219 · doc4.xml · derivative · entry 3

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,000

Underlying: Common Stock · 105,000 shares

Expires 2032-09-05

F3 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following September 6, 2022, the vesting commencement date, subject to the Reporting Person's continuous service to the Issuer through each vesting date.

Read SEC document
March 15, 2022 Filed Sep 8, 2022 21:53 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantCommon Stock 1,800 $8.53 $15,345.90
Disclosure

SEC source: 0001209191-22-049219 · doc4.xml · nonDerivative · entry 1

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,445

F1 · kind: These shares were acquired under the Issuer's 2021 Employee Stock Purchase Plan.

Read SEC document
November 02, 2021 Filed Nov 4, 2021 23:59 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantStock Option (Right to Buy) · Derivative 7,964 $0.00 Strike: $24.15 $0.00
Disclosure

SEC source: 0001209191-21-063023 · doc4.xml · derivative · entry 3

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,964

Underlying: Common Stock · 7,964 shares

Expires 2031-11-01

F2 · derivative.exercise_date: The option vests based on achievement of a performance objective.

Read SEC document
November 02, 2021 Filed Nov 4, 2021 23:59 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantStock Option (Right to Buy) · Derivative 7,964 $0.00 Strike: $24.15 $0.00
Disclosure

SEC source: 0001209191-21-063023 · doc4.xml · derivative · entry 2

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,964

Underlying: Common Stock · 7,964 shares

Expires 2031-11-01

F2 · derivative.exercise_date: The option vests based on achievement of a performance objective.

Read SEC document
November 02, 2021 Filed Nov 4, 2021 23:59 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 GrantStock Option (Right to Buy) · Derivative 83,626 $0.00 Strike: $24.15 $0.00
Disclosure

SEC source: 0001209191-21-063023 · doc4.xml · derivative · entry 1

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,626

Underlying: Common Stock · 83,626 shares

Expires 2031-11-01

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following November 2, 2021, the vesting commencement date, subject to the Reporting Person's continuous service to the Issuer through each vesting date.

Read SEC document
September 17, 2021 Filed Sep 17, 2021 20:44 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 ConversionSeries A Preferred Stock · Derivative 8,183 $0.00 $0.00
Disclosure

SEC source: 0000899243-21-036427 · doc4.xml · derivative · entry 3

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 21,254 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

Read SEC document
September 17, 2021 Filed Sep 17, 2021 20:44 UTC Tyra Biosciences, Inc. TYRA · Entity 4680 ConversionCommon Stock 21,254 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-21-036427 · doc4.xml · nonDerivative · entry 1

van den Boom Esther · CIK 0001603563 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 21,254

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On September 17, 2021, each share of Series A Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: Represents shares held by van den Boom Ventures LLC, of which the spouse of the Reporting Person is the managing member.

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.