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person · Reporting owner

Haurwitz Rachel E.

Disclosed activity across 2 companies

Tapewire entity
65418
SEC CIK
0001670579

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Caribou Biosciences, Inc.CRBU · Entity 6445Director · President and CEOFebruary 20, 2026February 20, 2026
Seer, Inc.SEER · Entity 6717DirectorJune 12, 2024June 14, 2024

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.

Caribou Biosciences, Inc.

Report date February 20, 2026 · Filed February 20, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect447,150 Reported balance After 2026-02-20 transaction · row 1
1 source row

Row 1 · 2026-02-20 · Grant · Acquired 151,700 · Balance 447,150

F1: This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2027, subject to the reporting person continuing to provide service to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date.

Option to purchase Common StockSEC Table II · derivative / convertible security · Conversion / exercise price $1.80 · Expires 2036-02-19Direct682,500 Reported balance After 2026-02-20 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-02-20 · Grant · Acquired 682,500 · Balance 682,500

F3: 1/48 of the total number of shares subject to this option will vest on each monthly anniversary of the grant date such that the option will be fully vested on February 20, 2030, subject to the reporting person continuing to provide service to the Issuer through each such vesting date.

Common StockSEC Table I · non-derivativeIndirectBy Trust3,369,395 Reported balance Holding disclosure · report date 2026-02-20 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 3,369,395

F2: Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

Filing footnotes · ownership attribution and instrument terms

F1: This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2027, subject to the reporting person continuing to provide service to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date.

F2: Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

F3: 1/48 of the total number of shares subject to this option will vest on each monthly anniversary of the grant date such that the option will be fully vested on February 20, 2030, subject to the reporting person continuing to provide service to the Issuer through each such vesting date.

Seer, Inc.

Report date June 12, 2024 · Filed June 14, 2024

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeDirect87,615 Reported balance After 2024-06-12 transaction · row 1
1 source row

Row 1 · 2024-06-12 · Grant · Acquired 58,178 · Balance 87,615

F1: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 12, 2025 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Filing footnotes · ownership attribution and instrument terms

F1: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 12, 2025 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

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
February 20, 2026 Filed Feb 20, 2026 17:26 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantOption to purchase Common Stock · Derivative 682,500 $0.00 Strike: $1.80 $0.00
Disclosure

SEC source: 0001670579-26-000002 · wk-form4_1771626383.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 682,500

Underlying: Common Stock · 682,500 shares

Expires 2036-02-19

F3 · derivative.exercise_date: 1/48 of the total number of shares subject to this option will vest on each monthly anniversary of the grant date such that the option will be fully vested on February 20, 2030, subject to the reporting person continuing to provide service to the Issuer through each such vesting date.

Read SEC document
February 20, 2026 Filed Feb 20, 2026 17:26 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantCommon Stock 151,700 $0.00 $0.00
Disclosure

SEC source: 0001670579-26-000002 · wk-form4_1771626383.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 447,150

F1 · shares: This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2027, subject to the reporting person continuing to provide service to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date.

Read SEC document
March 14, 2025 Filed Mar 17, 2025 08:01 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 PurchaseCommon Stock 20,000 $1.02 $20,400.00
Disclosure

SEC source: 0001670579-25-000008 · wk-form4_1742212876.xml · nonDerivative · entry 2

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 3,369,395

F1 · price: This transaction was executed in multiple trades on 3/14/2025 at prices ranging from $1.00 to $1.03 per share, inclusive. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price within the specified range.

F2 · ownership.nature: Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

Read SEC document
February 20, 2025 Filed Feb 21, 2025 20:21 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantOption to purchase Common Stock · Derivative 618,250 $0.00 Strike: $1.41 $0.00
Disclosure

SEC source: 0001670579-25-000003 · wk-form4_1740187261.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 618,250

Underlying: Common Stock · 618,250 shares

Expires 2035-02-19

F3 · derivative.exercise_date: 25% of the options will vest upon the one-year anniversary of the grant date, February 20, 2026, and 1/48th will vest monthly thereafter over the 36-month period following the one-year cliff, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
February 20, 2025 Filed Feb 21, 2025 20:21 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantCommon Stock 136,750 $0.00 $0.00
Disclosure

SEC source: 0001670579-25-000003 · wk-form4_1740187261.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,450

F1 · shares: This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2026, subject to the reporting person's continued services to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date.

Read SEC document
June 12, 2024 Filed Jun 14, 2024 20:22 UTC Seer, Inc. SEER · Entity 6717 GrantClass A Common Stock 58,178 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-016907 · form4-06142024_080648.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,615

F1 · shares: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 12, 2025 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Read SEC document
February 20, 2024 Filed Feb 22, 2024 17:18 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantOption to purchase Common Stock · Derivative 546,950 $0.00 Strike: $6.81 $0.00
Disclosure

SEC source: 0001628280-24-006421 · wk-form4_1708640281.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 546,950

Underlying: Common Stock · 546,950 shares

Expires 2034-02-19

F3 · derivative.exercise_date: 25% of the options will vest upon the one-year anniversary of the grant date, February 20, 2025, and 1/48th will vest monthly thereafter over the 36-month period following the one-year cliff, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
February 20, 2024 Filed Feb 22, 2024 17:18 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantCommon Stock 118,700 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-006421 · wk-form4_1708640281.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,700

F1 · shares: This reflects restricted stock units ("RSUs") that vest in four equal annual installments beginning on February 20, 2025, subject to the reporting person's continued services to the Issuer through the applicable vesting dates. The RSUs will be settled in stock within 30 days after each vesting date.

Read SEC document
June 14, 2023 Filed Jun 17, 2023 01:17 UTC Seer, Inc. SEER · Entity 6717 GrantStock Option (right to buy) · Derivative 34,735 $0.00 Strike: $4.33 $0.00
Disclosure

SEC source: 0001209191-23-038191 · doc4.xml · derivative · entry 2

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,735

Underlying: Class A Common Stock · 34,735 shares

Expires 2033-06-14

F2 · derivative.exercise_date: Shares subject to the option vest on the earlier of (i) June 14, 2024 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Read SEC document
June 14, 2023 Filed Jun 17, 2023 01:17 UTC Seer, Inc. SEER · Entity 6717 GrantClass A Common Stock 23,443 $0.00 $0.00
Disclosure

SEC source: 0001209191-23-038191 · doc4.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,437

F1 · shares: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 14, 2024 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Read SEC document
June 08, 2023 Filed Jun 9, 2023 16:31 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionOption to purchase Common Stock · Derivative 10,000 $0.00 Strike: $2.96 $0.00
Disclosure

SEC source: 0001619856-23-000073 · wk-form4_1686342698.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,350

Underlying: Common Stock · 10,000 shares

Expires 2023-06-11

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.

F2 · derivative.exercise_date: 1/4th of the shares subject to this option vested on June 12, 2019 and an additional 1/48th of the aggregate number of shares subject to the option vested on the corresponding day of each month thereafter until the option became fully vested on June 12, 2022.

Read SEC document
June 08, 2023 Filed Jun 9, 2023 16:31 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionCommon Stock 10,000 $2.96 $29,600.00
Disclosure

SEC source: 0001619856-23-000073 · wk-form4_1686342698.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

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.

Read SEC document
March 20, 2023 Filed Mar 22, 2023 16:16 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionOption to purchase Common Stock · Derivative 10,000 $0.00 Strike: $2.96 $0.00
Disclosure

SEC source: 0001619856-23-000039 · wf-form4_167951616420908.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,350

Underlying: Common Stock · 10,000 shares

Expires 2023-06-11

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.

F2 · derivative.exercise_date: 1/4th of the shares subject to this option vested on June 12, 2019 and an additional 1/48th of the aggregate number of shares subject to the option vested on the corresponding day of each month thereafter until the option became fully vested on June 12, 2022.

Read SEC document
March 20, 2023 Filed Mar 22, 2023 16:16 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionCommon Stock 10,000 $2.96 $29,600.00
Disclosure

SEC source: 0001619856-23-000039 · wf-form4_167951616420908.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

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.

Read SEC document
February 21, 2023 Filed Feb 23, 2023 17:14 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantOption to purchase Common Stock · Derivative 510,500 $0.00 Strike: $6.12 $0.00
Disclosure

SEC source: 0001619856-23-000028 · wf-form4_167719043346430.xml · derivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 510,500

Underlying: Common Stock · 510,500 shares

Expires 2033-02-20

F1 · derivative.exercise_date: The shares subject to this option will vest in equal monthly installments starting on the first monthly anniversary of the grant date until the option is fully vested on February 21, 2027, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
June 15, 2022 Filed Jun 17, 2022 22:40 UTC Seer, Inc. SEER · Entity 6717 GrantStock Option (right to buy) · Derivative 17,865 $0.00 Strike: $7.33 $0.00
Disclosure

SEC source: 0001209191-22-038103 · doc4.xml · derivative · entry 2

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,865

Underlying: Class A Common Stock · 17,865 shares

Expires 2031-06-15

F2 · derivative.exercise_date: Shares subject to the option vest on the earlier of (i) June 15, 2023 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Read SEC document
June 15, 2022 Filed Jun 17, 2022 22:40 UTC Seer, Inc. SEER · Entity 6717 GrantClass A Common Stock 5,994 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-038103 · doc4.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,994

F1 · shares: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 15, 2023 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Read SEC document
May 09, 2022 Filed May 10, 2022 19:32 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionOption to purchase Common Stock · Derivative 10,000 $0.00 Strike: $2.96 $0.00
Disclosure

SEC source: 0001209191-22-028170 · doc4.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,350

Underlying: Common Stock · 10,000 shares

Expires 2023-06-11

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: Due to a rounding error, the exercise price for this stock option was inadvertently originally reported as $2.95 per share on the reporting person's Form 3 filed on July 22, 2021.

F3 · derivative.exercise_date: 1/4th of the shares subject to this option vested on June 12, 2019 and an additional 1/48th of the aggregate number of shares subject to this option have vested or will vest on the corresponding day of each month thereafter until the option is fully vested on June 12, 2022, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
May 09, 2022 Filed May 10, 2022 19:32 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionCommon Stock 10,000 $2.96 $29,600.00
Disclosure

SEC source: 0001209191-22-028170 · doc4.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

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: Due to a rounding error, the exercise price for this stock option was inadvertently originally reported as $2.95 per share on the reporting person's Form 3 filed on July 22, 2021.

Read SEC document
January 26, 2022 Filed Jan 27, 2022 16:41 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionOption to purchase Common Stock · Derivative 10,000 $0.00 Strike: $2.96 $0.00
Disclosure

SEC source: 0001209191-22-005222 · doc4.xml · derivative · entry 2

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,350

Underlying: Common Stock · 10,000 shares

Expires 2023-06-11

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: Due to a rounding error, the exercise price for this stock option was inadvertently originally reported as $2.95 per share on the reporting person's Form 3 filed on July 22, 2021.

F2 · derivative.exercise_date: 1/4th of the shares subject to this option vested on June 12, 2019 and an additional 1/48th of the aggregate number of shares subject to the option have vested or will vest on the corresponding day of each month thereafter until the option is fully vested on June 12, 2022, subject to the reporting person's continued services to the Issuer through the applicable vesting dates.

Read SEC document
January 26, 2022 Filed Jan 27, 2022 16:41 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionCommon Stock 10,000 $2.96 $29,600.00
Disclosure

SEC source: 0001209191-22-005222 · doc4.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,359,395

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.

Read SEC document
January 26, 2022 Filed May 10, 2022 19:29 UTC Amendment Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionOption to purchase Common Stock · Derivative 10,000 $0.00 Strike: $2.96 $0.00
Disclosure

SEC source: 0001209191-22-028169 · doc4a.xml · derivative · entry 3

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,350

Underlying: Common Stock · 10,000 shares

Expires 2023-06-11

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: Due to a rounding error, the exercise price for this stock option was inadvertently originally reported as $2.95 per share on the reporting person's Form 3 filed on July 22, 2021.

F4 · derivative.exercise_date: 1/4th of the shares subject to this option vested on June 12, 2019 and an additional 1/48th of the aggregate number of shares subject to this option have vested or will vest on the corresponding day of each month thereafter until the option is fully vested on June 12, 2022, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
January 26, 2022 Filed May 10, 2022 19:29 UTC Amendment Caribou Biosciences, Inc. CRBU · Entity 6445 Exercise / conversionCommon Stock 10,000 $2.96 $29,600.00
Disclosure

SEC source: 0001209191-22-028169 · doc4a.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

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: Due to a rounding error, the exercise price for this stock option was inadvertently originally reported as $2.95 per share on the reporting person's Form 3 filed on July 22, 2021.

F2 · balance_after: This Form 4/A is being filed to correct an inadvertent error in the original Form 4 filed January 27, 2022 attributing direct ownership of 3,349,395 shares listed in column 5 to the reporting person. As described in a Form 5 filed on February 9, 2022, on September 27, 2021, these 3,349,395 shares were transferred to a trust for which the reporting person and her spouse serve as a Co-Trustees.

Read SEC document
December 20, 2021 Filed Dec 21, 2021 17:27 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GrantOption to purchase Common Stock · Derivative 411,000 $0.00 Strike: $15.16 $0.00
Disclosure

SEC source: 0001209191-21-070804 · doc4.xml · derivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 411,000

Underlying: Common Stock · 411,000 shares

Expires 2031-12-19

F1 · derivative.exercise_date: The shares subject to this option will vest in equal monthly installments starting on the first monthly anniversary of the grant date until the option is fully vested on December 20, 2025, subject to the reporting person's continued service to the Issuer through the applicable vesting dates.

Read SEC document
November 09, 2021 Filed Nov 13, 2021 00:45 UTC Seer, Inc. SEER · Entity 6717 GrantStock Option (right to buy) · Derivative 30,000 $0.00 Strike: $35.25 $0.00
Disclosure

SEC source: 0001209191-21-064362 · doc4.xml · derivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Class A Common Stock · 30,000 shares

Expires 2031-11-09

F1 · derivative.exercise_date: Shares subject to the option vest in 36 equal monthly installments beginning on December 9, 2021.

Read SEC document
September 27, 2021 Filed Feb 9, 2022 16:25 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GiftCommon Stock 3,349,395 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-008027 · doc5.xml · nonDerivative · entry 2

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 3,349,395

F1 · shares: Represents transfer of shares to The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

F2 · ownership.nature: Shares are held by The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

Read SEC document
September 27, 2021 Filed Feb 9, 2022 16:25 UTC Caribou Biosciences, Inc. CRBU · Entity 6445 GiftCommon Stock 3,349,395 $0.00 $0.00
Disclosure

SEC source: 0001209191-22-008027 · doc5.xml · nonDerivative · entry 1

Haurwitz Rachel E. · CIK 0001670579 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · shares: Represents transfer of shares to The City Canyon Family Trust dated May 31, 2021, of which the Reporting Person is a Co-Trustee with her spouse.

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.